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Diffstat (limited to 'aarch64/share/doc/hadoop/common/CHANGES.txt')
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diff --git a/aarch64/share/doc/hadoop/common/CHANGES.txt b/aarch64/share/doc/hadoop/common/CHANGES.txt new file mode 100644 index 0000000..6fefb12 --- /dev/null +++ b/aarch64/share/doc/hadoop/common/CHANGES.txt @@ -0,0 +1,13861 @@ +Hadoop Change Log + +Release 2.2.0 - 2013-10-13 + + INCOMPATIBLE CHANGES + + HADOOP-10020. Disable symlinks temporarily (branch-2.1-beta only change) + (sanjay via suresh) + + NEW FEATURES + + HDFS-4817. Make HDFS advisory caching configurable on a per-file basis. + (Contributed by Colin Patrick McCabe) + + IMPROVEMENTS + + HADOOP-9948. Add a config value to CLITestHelper to skip tests on Windows. + (Chuan Liu via cnauroth) + + HADOOP-9976. Different versions of avro and avro-maven-plugin (Karthik + Kambatla via Sandy Ryza) + + HADOOP-9758. Provide configuration option for FileSystem/FileContext + symlink resolution (Andrew Wang via Colin Patrick McCabe) + + HADOOP-8315. Support SASL-authenticated ZooKeeper in ActiveStandbyElector + (todd) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-9776. HarFileSystem.listStatus() returns invalid authority if port + number is empty. (Shanyu Zhao via ivanmi) + + HADOOP-9761. ViewFileSystem#rename fails when using DistributedFileSystem. + (Andrew Wang via Colin Patrick McCabe) + + HADOOP-10003. HarFileSystem.listLocatedStatus() fails. + (Jason Dere and suresh via suresh) + + HADOOP-10017. Fix NPE in DFSClient#getDelegationToken when doing Distcp + from a secured cluster to an insecured cluster. (Haohui Mai via jing9) + +Release 2.1.1-beta - 2013-09-23 + + INCOMPATIBLE CHANGES + + HADOOP-9944. Fix RpcRequestHeaderProto.callId to be sint32 rather than + uint32 since ipc.Client.CONNECTION_CONTEXT_CALL_ID is signed (i.e. -3) + (acmurthy) + + NEW FEATURES + + IMPROVEMENTS + + HADOOP-9910. proxy server start and stop documentation wrong + (Andre Kelpe via harsh) + + HADOOP-9787. ShutdownHelper util to shutdown threads and threadpools. + (Karthik Kambatla via Sandy Ryza) + + HADOOP-9803. Add a generic type parameter to RetryInvocationHandler. + (szetszwo) + + HADOOP-9821. ClientId should have getMsb/getLsb methods. + (Tsuyoshi OZAWA via jing9) + + HADOOP-9435. Support building the JNI code against the IBM JVM. + (Tian Hong Wang via Colin Patrick McCabe) + + HADOOP-9355. Abstract symlink tests to use either FileContext or + FileSystem. (Andrew Wang via Colin Patrick McCabe) + + HADOOP-9833 move slf4j to version 1.7.5 (Kousuke Saruta via stevel) + + HADOOP-9672. Upgrade Avro dependency to 1.7.4. (sandy via kihwal) + + HADOOP-8814. Replace string equals "" by String#isEmpty(). + (Brandon Li via suresh) + + HADOOP-9789. Support server advertised kerberos principals (daryn) + + HADOOP-9802. Support Snappy codec on Windows. (cnauroth) + + HADOOP-9879. Move the version info of zookeeper dependencies to + hadoop-project/pom (Karthik Kambatla via Sandy Ryza) + + HADOOP-9886. Turn warning message in RetryInvocationHandler to debug (arpit) + + HADOOP-9906. Move HAZKUtil to o.a.h.util.ZKUtil and make inner-classes + public (Karthik Kambatla via Sandy Ryza) + + HADOOP-9918. Add addIfService to CompositeService (Karthik Kambatla via + Sandy Ryza) + + HADOOP-9945. HAServiceState should have a state for stopped services. + (Karthik Kambatla via atm) + + HADOOP-9962. in order to avoid dependency divergence within Hadoop itself + lets enable DependencyConvergence. (rvs via tucu) + + HADOOP-9487 Deprecation warnings in Configuration should go to their + own log or otherwise be suppressible (Chu Tong via stevel) + + HADOOP-9669. Reduce the number of byte array creations and copies in + XDR data manipulation. (Haohui Mai via brandonli) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-9916. Fix race in ipc.Client retry. (Binglin Chang via llu) + + HADOOP-9768. chown and chgrp reject users and groups with spaces on platforms + where spaces are otherwise acceptable. (cnauroth) + + HADOOP-9801. Configuration#writeXml uses platform defaulting encoding, which + may mishandle multi-byte characters. (cnauroth) + + HADOOP-9806 PortmapInterface should check if the procedure is out-of-range + (brandonli) + + HADOOP-9315. Port HADOOP-9249 hadoop-maven-plugins Clover fix to branch-2 to + fix build failures. (Dennis Y via cnauroth) + + HADOOP-9831. Make checknative shell command accessible on Windows. (cnauroth) + + HADOOP-9675. use svn:eol-style native for html to prevent line ending + issues (Colin Patrick McCabe) + + HADOOP-9757. Har metadata cache can grow without limit (Cristina Abad via daryn) + + HADOOP-9858. Remove unused private RawLocalFileSystem#execCommand method from + branch-2. (cnauroth) + + HADOOP-9857. Tests block and sometimes timeout on Windows due to invalid + entropy source. (cnauroth) + + HADOOP-9527. Add symlink support to LocalFileSystem on Windows. + (Arpit Agarwal) + + HADOOP-9381. Document dfs cp -f option. (Keegan Witt, suresh via suresh) + + HADOOP-9868. Server must not advertise kerberos realm. (daryn via kihwal) + + HADOOP-9880. SASL changes from HADOOP-9421 breaks Secure HA NN. (daryn via + jing9) + + HADOOP-9899. Remove the debug message, added by HADOOP-8855, from + KerberosAuthenticator. (szetszwo) + + HADOOP-9894. Race condition in Shell leads to logged error stream handling + exceptions (Arpit Agarwal) + + HADOOP-9774. RawLocalFileSystem.listStatus() return absolute paths when + input path is relative on Windows. (Shanyu Zhao via ivanmi) + + HADOOP-9924. FileUtil.createJarWithClassPath() does not generate relative + classpath correctly. (Shanyu Zhao via ivanmi) + + HADOOP-9932. Improper synchronization in RetryCache. (kihwal) + + HADOOP-9958. Add old constructor back to DelegationTokenInformation to + unbreak downstream builds. (Andrew Wang) + + HADOOP-9960. Upgrade Jersey version to 1.9. (Karthik Kambatla via atm) + + HADOOP-9557. hadoop-client excludes commons-httpclient. (Lohit Vijayarenu via + cnauroth) + + HADOOP-9350. Hadoop not building against Java7 on OSX + (Robert Kanter via stevel) + + HADOOP-9961. versions of a few transitive dependencies diverged between hadoop + subprojects. (rvs via tucu) + + HADOOP-9977. Hadoop services won't start with different keypass and + keystorepass when https is enabled. (cnauroth) + +Release 2.1.0-beta - 2013-08-22 + + INCOMPATIBLE CHANGES + + HADOOP-8886. Remove KFS support. (eli) + + HADOOP-9163. [RPC v9] The rpc msg in ProtobufRpcEngine.proto should be moved out to + avoid an extra copy (Sanjay Radia) + + HADOOP-9151. [RPC v9] Include RPC error info in RpcResponseHeader instead of sending + it separately (sanjay Radia) + + HADOOP-9380. [RPC v9] Add totalLength to rpc response (sanjay Radia) + + HADOOP-9425. [RPC v9] Add error codes to rpc-response (sanjay Radia) + + HADOOP-9194. [RPC v9] RPC support for QoS. (Junping Du via llu) + + HADOOP-9630. [RPC v9] Remove IpcSerializationType. (Junping Du via llu) + + HADOOP-9421. [RPC v9] Convert SASL to use ProtoBuf and provide + negotiation capabilities (daryn) + + HADOOP-9688. Add globally unique Client ID to RPC requests. (suresh) + + HADOOP-9683. [RPC v9] Wrap IpcConnectionContext in RPC headers (daryn) + + HADOOP-9698. [RPC v9] Client must honor server's SASL negotiate response (daryn) + + HADOOP-9832. [RPC v9] Add RPC header to client ping (daryn) + + HADOOP-9820. [RPC v9] Wire protocol is insufficient to support multiplexing. (daryn via jitendra) + + NEW FEATURES + + HADOOP-9283. Add support for running the Hadoop client on AIX. (atm) + + HADOOP-8415. Add getDouble() and setDouble() in + org.apache.hadoop.conf.Configuration (Jan van der Lugt via harsh) + + HADOOP-9338. FsShell Copy Commands Should Optionally Preserve File + Attributes. (Nick White via atm) + + HADOOP-8562. Enhancements to support Hadoop on Windows Server and Windows + Azure environments. (See breakdown of tasks below for subtasks and + contributors) + + HADOOP-8469. Make NetworkTopology class pluggable. (Junping Du via + szetszwo) + + HADOOP-8470. Add NetworkTopologyWithNodeGroup, a 4-layer implementation + of NetworkTopology. (Junping Du via szetszwo) + + HADOOP-9763. Extends LightWeightGSet to support eviction of expired + elements. (Tsz Wo (Nicholas) SZE via jing9) + + HADOOP-9762. RetryCache utility for implementing RPC retries. + (Suresh Srinivas via jing9) + + HADOOP-9792. Retry the methods that are tagged @AtMostOnce along + with @Idempotent. (suresh) + + HADOOP-9509. Implement ONCRPC and XDR. (brandonli) + + HADOOP-9515. Add general interface for NFS and Mount. (brandonli) + + IMPROVEMENTS + + HADOOP-9164. Print paths of loaded native libraries in + NativeLibraryChecker. (Binglin Chang via llu) + + HADOOP-9253. Capture ulimit info in the logs at service start time. + (Arpit Gupta via suresh) + + HADOOP-8924. Add maven plugin alternative to shell script to save + package-info.java. (Chris Nauroth via suresh) + + HADOOP-9117. replace protoc ant plugin exec with a maven plugin. (tucu) + + HADOOP-9279. Document the need to build hadoop-maven-plugins for + eclipse and separate project builds. (Tsuyoshi Ozawa via suresh) + + HADOOP-9334. Upgrade netty version. (Nicolas Liochon via suresh) + + HADOOP-9343. Allow additional exceptions through the RPC layer. (sseth) + + HADOOP-9318. When exiting on a signal, print the signal name first. (Colin + Patrick McCabe via atm) + + HADOOP-9358. "Auth failed" log should include exception string (todd) + + HADOOP-9401. CodecPool: Add counters for number of (de)compressors + leased out. (kkambatl via tucu) + + HADOOP-9450. HADOOP_USER_CLASSPATH_FIRST is not honored; CLASSPATH + is PREpended instead of APpended. (Chris Nauroth and harsh via harsh) + + HADOOP-9496. Bad merge of HADOOP-9450 on branch-2 breaks all bin/hadoop + calls that need HADOOP_CLASSPATH. (harsh) + + HADOOP-9503. Remove sleep between IPC client connect timeouts. + (Varun Sharma via szetszwo) + + HADOOP-9322. LdapGroupsMapping doesn't seem to set a timeout for + its directory search. (harsh) + + HADOOP-9523. Provide a generic IBM java vendor flag in PlatformName.java + to support non-Sun JREs. (Tian Hong Wang via suresh) + + HADOOP-9511. Adding support for additional input streams (FSDataInputStream + and RandomAccessFile) in SecureIOUtils so as to help YARN-578. (Omkar Vinit + Joshi via vinodkv) + + HADOOP-9560. metrics2#JvmMetrics should have max memory size of JVM. + (Tsuyoshi Ozawa via suresh) + + HADOOP-9140 Cleanup rpc PB protos (sanjay Radia) + + HADOOP-9218 Document the Rpc-wrappers used internally (sanjay Radia) + + HADOOP-9574. Added new methods in AbstractDelegationTokenSecretManager for + helping YARN ResourceManager to reuse code for RM restart. (Jian He via + vinodkv) + + HADOOP-7391 Document Interface Classification from HADOOP-5073 (sanjay Radia) + + HADOOP-9287. Parallel-testing hadoop-common (Andrey Klochkov via jlowe) + + HADOOP-9604. Javadoc of FSDataOutputStream is slightly inaccurate. (Jingguo + Yao via atm) + + HADOOP-9625. HADOOP_OPTS not picked up by hadoop command. + (Paul Han via arpit) + + HADOOP-9649. Promoted YARN service life-cycle libraries into Hadoop Common + for usage across all Hadoop projects. (Zhijie Shen via vinodkv) + + HADOOP-9517. Documented various aspects of compatibility for Apache + Hadoop. (Karthik Kambatla via acmurthy) + + HADOOP-8608. Add Configuration API for parsing time durations. (cdouglas) + + HADOOP-9619 Mark stability of .proto files (sanjay Radia) + + HADOOP-9676. Make maximum RPC buffer size configurable (Colin Patrick + McCabe) + + HADOOP-9691. RPC clients can generate call ID using AtomicInteger instead of + synchronizing on the Client instance. (cnauroth) + + HADOOP-9661. Allow metrics sources to be extended. (sandyr via tucu) + + HADOOP-9370. Write FSWrapper class to wrap FileSystem and FileContext for + better test coverage. (Andrew Wang via Colin Patrick McCabe) + + HADOOP-9673. NetworkTopology: when a node can't be added, print out its + location for diagnostic purposes. (Colin Patrick McCabe) + + HADOOP-9414. Refactor out FSLinkResolver and relevant helper methods. + (Andrew Wang via Colin Patrick McCabe) + + HADOOP-9416. Add new symlink resolution methods in FileSystem and + FileSystemLinkResolver. (Andrew Wang via Colin Patrick McCabe) + + HADOOP-9720. Rename Client#uuid to Client#clientId. (Arpit Agarwal via + suresh) + + HADOOP-9734. Common protobuf definitions for GetUserMappingsProtocol, + RefreshAuthorizationPolicyProtocol and RefreshUserMappingsProtocol (jlowe) + + HADOOP-9716. Rpc retries should use the same call ID as the original call. + (szetszwo) + + HADOOP-9717. Add retry attempt count to the RPC requests. (jing9) + + HADOOP-9751. Add clientId and retryCount to RpcResponseHeaderProto. + (szetszwo) + + HADOOP-9754. Remove unnecessary "throws IOException/InterruptedException", + and fix generic and other javac warnings. (szetszwo) + + HADOOP-9760. Move GSet and related classes to common from HDFS. + (suresh) + + HADOOP-9756. Remove the deprecated getServer(..) methods from RPC. + (Junping Du via szetszwo) + + HADOOP-9770. Make RetryCache#state non volatile. (suresh) + + HADOOP-9786. RetryInvocationHandler#isRpcInvocation should support + ProtocolTranslator. (suresh and jing9) + + OPTIMIZATIONS + + HADOOP-9150. Avoid unnecessary DNS resolution attempts for logical URIs + (todd) + + HADOOP-9845. Update protobuf to 2.5 from 2.4.x. (tucu) + + HADOOP-9872. Improve protoc version handling and detection. (tucu) + + BUG FIXES + + HADOOP-9451. Fault single-layer config if node group topology is enabled. + (Junping Du via llu) + + HADOOP-9294. GetGroupsTestBase fails on Windows. (Chris Nauroth via suresh) + + HADOOP-9305. Add support for running the Hadoop client on 64-bit AIX. (atm) + + HADOOP-9245. mvn clean without running mvn install before fails. + (Karthik Kambatla via suresh) + + HADOOP-9246 Execution phase for hadoop-maven-plugin should be + process-resources (Karthik Kambatla and Chris Nauroth via jlowe) + + HADOOP-9297. remove old record IO generation and tests. (tucu) + + HADOOP-9154. SortedMapWritable#putAll() doesn't add key/value classes to + the map. (Karthik Kambatla via tomwhite) + + HADOOP-9304. remove addition of avro genreated-sources dirs to build. (tucu) + + HADOOP-9267. hadoop -help, -h, --help should show usage instructions. + (Andrew Wang via atm) + + HADOOP-8569. CMakeLists.txt: define _GNU_SOURCE and _LARGEFILE_SOURCE. + (Colin Patrick McCabe via atm) + + HADOOP-9323. Fix typos in API documentation. (suresh) + + HADOOP-7487. DF should throw a more reasonable exception when mount cannot + be determined. (Andrew Wang via atm) + + HADOOP-8917. add LOCALE.US to toLowerCase in SecurityUtil.replacePattern. + (Arpit Gupta via suresh) + + HADOOP-9342. Remove jline from distribution. (thw via tucu) + + HADOOP-9230. TestUniformSizeInputFormat fails intermittently. + (kkambatl via tucu) + + HADOOP-9349. Confusing output when running hadoop version from one hadoop + installation when HADOOP_HOME points to another. (sandyr via tucu) + + HADOOP-9337. org.apache.hadoop.fs.DF.getMount() does not work on Mac OS. + (Ivan A. Veselovsky via atm) + + HADOOP-9369. DNS#reverseDns() can return hostname with . appended at the + end. (Karthik Kambatla via atm) + + HADOOP-9379. capture the ulimit info after printing the log to the + console. (Arpit Gupta via suresh) + + HADOOP-9399. protoc maven plugin doesn't work on mvn 3.0.2 (todd) + + HADOOP-9407. commons-daemon 1.0.3 dependency has bad group id causing + build issues. (Sangjin Lee via suresh) + + HADOOP-9405. TestGridmixSummary#testExecutionSummarizer is broken. (Andrew + Wang via atm) + + HADOOP-9430. TestSSLFactory fails on IBM JVM. (Amir Sanjar via suresh) + + HADOOP-9125. LdapGroupsMapping threw CommunicationException after some + idle time. (Kai Zheng via atm) + + HADOOP-9429. TestConfiguration fails with IBM JAVA. (Amir Sanjar via + suresh) + + HADOOP-9222. Cover package with org.apache.hadoop.io.lz4 unit tests (Vadim + Bondarev via jlowe) + + HADOOP-9233. Cover package org.apache.hadoop.io.compress.zlib with unit + tests (Vadim Bondarev via jlowe) + + HADOOP-9211. Set default max heap size in HADOOP_CLIENT_OPTS to 512m + in order to avoid OOME. (Plamen Jeliazkov via shv) + + HADOOP-9473. Typo in FileUtil copy() method. (Glen Mazza via suresh) + + HADOOP-9504. MetricsDynamicMBeanBase has concurrency issues in + createMBeanInfo (Liang Xie via jlowe) + + HADOOP-9455. HADOOP_CLIENT_OPTS appended twice causes JVM failures. + (Chris Nauroth via suresh) + + HADOOP-9550. Remove aspectj dependency. (kkambatl via tucu) + + HADOOP-9549. WebHdfsFileSystem hangs on close(). (daryn via kihwal) + + HADOOP-9485. No default value in the code for + hadoop.rpc.socket.factory.class.default. (Colin Patrick McCabe via atm) + + HADOOP-9459. ActiveStandbyElector can join election even before + Service HEALTHY, and results in null data at ActiveBreadCrumb. + (Vinay and todd via todd) + + HADOOP-9307. BufferedFSInputStream.read returns wrong results + after certain seeks. (todd) + + HADOOP-9220. Unnecessary transition to standby in ActiveStandbyElector. + (tom and todd via todd) + + HADOOP-9563. Fix incompatibility introduced by HADOOP-9523. + (Tian Hong Wang via suresh) + + HADOOP-9566. Performing direct read using libhdfs sometimes raises SIGPIPE + (which in turn throws SIGABRT) causing client crashes. (Colin Patrick + McCabe via atm) + + HADOOP-9481. Broken conditional logic with HADOOP_SNAPPY_LIBRARY. (Vadim + Bondarev via atm) + + HADOOP-9593. stack trace printed at ERROR for all yarn clients without + hadoop.home set (stevel) + + HADOOP-8957. AbstractFileSystem#IsValidName should be overridden for + embedded file systems like ViewFs (Chris Nauroth via Sanjay Radia) + + HADOOP-9607. Fixes in Javadoc build (Timothy St. Clair via cos) + + HADOOP-9605. Update junit dependency. (Timothy St. Clair via cos) + + HADOOP-9581. hadoop --config non-existent directory should result in error + (Ashwin Shankar via jlowe) + + HADOOP-9638. Parallel test changes caused invalid test path for several HDFS + tests on Windows (Andrey Klochkov via cnauroth) + + HADOOP-9632. TestShellCommandFencer will fail if there is a 'host' machine in + the network. (Chuan Liu via cnauroth) + + HADOOP-9624. TestFSMainOperationsLocalFileSystem failed when the Hadoop test + root path has "X" in its name. (Xi Fang via cnauroth) + + HADOOP-9439. JniBasedUnixGroupsMapping: fix some crash bugs. (Colin + Patrick McCabe) + + HADOOP-9656. Gridmix unit tests fail on Windows and Linux. (Chuan Liu via + cnauroth) + + HADOOP-9707. Fix register lists for crc32c inline assembly. (todd via + kihwal) + + HADOOP-9738. TestDistCh fails. (jing9 via kihwal) + + HADOOP-9759. Add support for NativeCodeLoader#getLibraryName on Windows. + (Chuan Liu via cnauroth) + + HADOOP-9773. TestLightWeightCache should not set size limit to zero when + testing it. (szetszwo) + + HADOOP-9507. LocalFileSystem rename() is broken in some cases when + destination exists. (cnauroth) + + HADOOP-9816. RPC Sasl QOP is broken (daryn) + + HADOOP-9850. RPC kerberos errors don't trigger relogin. (daryn via kihwal) + + BREAKDOWN OF HADOOP-8562 SUBTASKS AND RELATED JIRAS + + HADOOP-8924. Hadoop Common creating package-info.java must not depend on + sh. (Chris Nauroth via suresh) + + HADOOP-8945. Merge winutils from branch-1-win to branch-trunk-win. + (Bikas Saha, Chuan Liu, Giridharan Kesavan, Ivan Mitic, and Steve Maine + ported by Chris Nauroth via suresh) + + HADOOP-8946. winutils: compile codebase during Maven build on + branch-trunk-win. (Chris Nauroth via suresh) + + HADOOP-8947. Merge FileUtil and Shell changes from branch-1-win to + branch-trunk-win to enable initial test pass. (Raja Aluri, Davio Lao, + Sumadhur Reddy Bolli, Ahmed El Baz, Kanna Karanam, Chuan Liu, + Ivan Mitic, Chris Nauroth, and Bikas Saha via suresh) + + HADOOP-8954. "stat" executable not found on Windows. (Bikas Saha, Ivan Mitic + ported by Chris Narouth via suresh) + + HADOOP-8959. TestUserGroupInformation fails on Windows due to "id" executable + not found. (Bikas Saha, Ivan Mitic, ported by Chris Narouth via suresh) + + HADOOP-8955. "chmod" executable not found on Windows. + (Chris Nauroth via suresh) + + HADOOP-8960. TestMetricsServlet fails on Windows. (Ivan Mitic via suresh) + + HADOOP-8961. GenericOptionsParser URI parsing failure on Windows. + (Ivan Mitic via suresh) + + HADOOP-8949. Remove FileUtil.CygPathCommand dead code. (Chris Nauroth via + suresh) + + HADOOP-8956. FileSystem.primitiveMkdir failures on Windows cause multiple + test suites to fail. (Chris Nauroth via suresh) + + HADOOP-8978. TestTrash fails on Windows. (Chris Nauroth via suresh) + + HADOOP-8979. TestHttpServer fails on Windows. (Chris Nauroth via suresh) + + HADOOP-8953. Shell PathData parsing failures on Windows. (Arpit Agarwal via + suresh) + + HADOOP-8975. TestFileContextResolveAfs fails on Windows. (Chris Nauroth via + suresh) + + HADOOP-8977. Multiple FsShell test failures on Windows. (Chris Nauroth via + suresh) + + HADOOP-9005. Merge hadoop cmd line scripts from branch-1-win. (David Lao, + Bikas Saha, Lauren Yang, Chuan Liu, Thejas M Nair and Ivan Mitic via suresh) + + HADOOP-9008. Building hadoop tarball fails on Windows. (Chris Nauroth via + suresh) + + HADOOP-9011. saveVersion.py does not include branch in version annotation. + (Chris Nauroth via suresh) + + HADOOP-9110. winutils ls off-by-one error indexing MONTHS array can cause + access violation. (Chris Nauroth via suresh) + + HADOOP-9056. Build native library on Windows. (Chuan Liu, Arpit Agarwal via + suresh) + + HADOOP-9144. Fix findbugs warnings. (Chris Nauroth via suresh) + + HADOOP-9081. Add TestWinUtils. (Chuan Liu, Ivan Mitic, Chris Nauroth, + and Bikas Saha via suresh) + + HADOOP-9146. Fix sticky bit regression on branch-trunk-win. + (Chris Nauroth via suresh) + + HADOOP-9266. Fix javac, findbugs, and release audit warnings on + branch-trunk-win. (Chris Nauroth via suresh) + + HADOOP-9270. Remove a stale java comment from FileUtil. (Chris Nauroth via + szetszwo) + + HADOOP-9271. Revert Python build scripts from branch-trunk-win. + (Chris Nauroth via suresh) + + HADOOP-9313. Remove spurious mkdir from hadoop-config.cmd. + (Ivan Mitic via suresh) + + HADOOP-9309. Test failures on Windows due to UnsatisfiedLinkError + in NativeCodeLoader#buildSupportsSnappy. (Arpit Agarwal via suresh) + + HADOOP-9347. Add instructions to BUILDING.txt describing how to + build on Windows. (Chris Nauroth via suresh) + + HADOOP-9348. Address TODO in winutils to add more command line usage + and examples. (Chris Nauroth via suresh) + + HADOOP-9354. Windows native project files missing license headers. + (Chris Nauroth via suresh) + + HADOOP-9356. Remove remaining references to cygwin/cygpath from scripts. + (Chris Nauroth via suresh) + + HADOOP-9232. JniBasedUnixGroupsMappingWithFallback fails on Windows + with UnsatisfiedLinkError. (Ivan Mitic via suresh) + + HADOOP-9368. Add timeouts to new tests in branch-trunk-win. + (Arpit Agarwal via suresh) + + HADOOP-9373. Merge CHANGES.branch-trunk-win.txt to CHANGES.txt. + (suresh) + + HADOOP-9372. Fix bad timeout annotations on tests. + (Arpit Agarwal via suresh) + + HADOOP-9376. TestProxyUserFromEnv fails on a Windows domain joined machine. + (Ivan Mitic via suresh) + + HADOOP-9365. TestHAZKUtil fails on Windows. (Ivan Mitic via suresh) + + HADOOP-9364. PathData#expandAsGlob does not return correct results for + absolute paths on Windows. (Ivan Mitic via suresh) + + HADOOP-8973. DiskChecker cannot reliably detect an inaccessible disk on + Windows with NTFS ACLs. (Chris Nauroth via suresh) + + HADOOP-9388. TestFsShellCopy fails on Windows. (Ivan Mitic via suresh) + + HADOOP-9387. Fix DF so that it won't execute a shell command on Windows + to compute the file system/mount point. (Ivan Mitic via szetszwo) + + HADOOP-9353. Activate native-win maven profile by default on Windows. + (Arpit Agarwal via szetszwo) + + HADOOP-9437. TestNativeIO#testRenameTo fails on Windows due to assumption + that POSIX errno is embedded in NativeIOException. (Chris Nauroth via + suresh) + + HADOOP-9443. Port winutils static code analysis change to trunk. + (Chuan Liu via suresh) + + HADOOP-9290. Some tests cannot load native library on windows. + (Chris Nauroth via suresh) + + HADOOP-9500. TestUserGroupInformation#testGetServerSideGroups fails on + Windows due to failure to find winutils.exe. (Chris Nauroth via suresh) + + HADOOP-9490. LocalFileSystem#reportChecksumFailure not closing the + checksum file handle before rename. (Ivan Mitic via suresh) + + HADOOP-9524. Fix ShellCommandFencer to work on Windows. + (Arpit Agarwal via suresh) + + HADOOP-9413. Add common utils for File#setReadable/Writable/Executable & + File#canRead/Write/Execute that work cross-platform. (Ivan Mitic via suresh) + + HADOOP-9532. HADOOP_CLIENT_OPTS is appended twice by Windows cmd scripts. + (Chris Nauroth via suresh) + + HADOOP-9043. Disallow in winutils creating symlinks with forwards slashes. + (Chris Nauroth and Arpit Agarwal via suresh) + + HADOOP-9483. winutils support for readlink command. + (Arpit Agarwal via suresh) + + HADOOP-9488. FileUtil#createJarWithClassPath only substitutes environment + variables from current process environment/does not support overriding + when launching new process (Chris Nauroth via bikas) + + HADOOP-9556. disable HA tests on Windows that fail due to ZooKeeper client + connection management bug. (Chris Nauroth via suresh) + + HADOOP-9553. TestAuthenticationToken fails on Windows. + (Arpit Agarwal via suresh) + + HADOOP-9397. Incremental dist tar build fails. (Chris Nauroth via jlowe) + + HADOOP-9131. Turn off TestLocalFileSystem#testListStatusWithColons on + Windows. (Chris Nauroth via suresh) + + HADOOP-9526. TestShellCommandFencer and TestShell fail on Windows. + (Arpit Agarwal via suresh) + + HADOOP-8982. TestSocketIOWithTimeout fails on Windows. + (Chris Nauroth via suresh) + + HADOOP-8958. ViewFs:Non absolute mount name failures when running + multiple tests on Windows. (Chris Nauroth via suresh) + + HADOOP-9599. hadoop-config.cmd doesn't set JAVA_LIBRARY_PATH correctly. + (Mostafa Elhemali via ivanmi) + + HADOOP-9637. Adding Native Fstat for Windows as needed by YARN. (Chuan Liu + via cnauroth) + + HADOOP-9264. Port change to use Java untar API on Windows from + branch-1-win to trunk. (Chris Nauroth via suresh) + + HADOOP-9678. TestRPC#testStopsAllThreads intermittently fails on Windows. + (Ivan Mitic via cnauroth) + + HADOOP-9681. FileUtil.unTarUsingJava() should close the InputStream upon + finishing. (Chuan Liu via cnauroth) + + HADOOP-9665. Fixed BlockDecompressorStream#decompress to return -1 rather + than throw EOF at end of file. (Zhijie Shen via acmurthy) + + HADOOP-8440. HarFileSystem.decodeHarURI fails for URIs whose host contains + numbers. (Ivan Mitic via cnauroth) + + HADOOP-9643. org.apache.hadoop.security.SecurityUtil calls + toUpperCase(Locale.getDefault()) as well as toLowerCase(Locale.getDefault()) + on hadoop.security.authentication value. (markrmiller@gmail.com via tucu) + + HADOOP-9701. mvn site ambiguous links in hadoop-common. (kkambatl via tucu) + +Release 2.0.5-alpha - 06/06/2013 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-9407. commons-daemon 1.0.3 dependency has bad group id causing + build issues. (Sangjin Lee via suresh) + +Release 2.0.4-alpha - 2013-04-25 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-9467. Metrics2 record filter should check name as well as tags. + (Chris Nauroth and Ganeshan Iyler via llu) + + HADOOP-9406. hadoop-client leaks dependency on JDK tools jar. (tucu) + + HADOOP-9301. hadoop client servlet/jsp/jetty/tomcat JARs creating + conflicts in Oozie & HttpFS. (tucu) + + HADOOP-9299. kerberos name resolution is kicking in even when kerberos + is not configured (daryn) + + HADOOP-9408. misleading description for net.topology.table.file.name + property in core-default.xml. (rajeshbabu via suresh) + + HADOOP-9444. Modify hadoop-policy.xml to replace unexpanded variables to a + default value of '*'. (Roman Shaposhnik via vinodkv) + + HADOOP-9471. hadoop-client wrongfully excludes jetty-util JAR, + breaking webhdfs. (tucu) + +Release 2.0.3-alpha - 2013-02-06 + + INCOMPATIBLE CHANGES + + HADOOP-8999. SASL negotiation is flawed (daryn) + + NEW FEATURES + + HADOOP-8561. Introduce HADOOP_PROXY_USER for secure impersonation in child + hadoop client processes. (Yu Gao via llu) + + HADOOP-8597. Permit FsShell's text command to read Avro files. + (Ivan Vladimirov Ivanov via cutting) + + HADOOP-9020. Add a SASL PLAIN server (daryn via bobby) + + HADOOP-9090. Support on-demand publish of metrics. (Mostafa Elhemali via + suresh) + + HADOOP-9054. Add AuthenticationHandler that uses Kerberos but allows for + an alternate form of authentication for browsers. (rkanter via tucu) + + IMPROVEMENTS + + HADOOP-8789. Tests setLevel(Level.OFF) should be Level.ERROR. + (Andy Isaacson via eli) + + HADOOP-8755. Print thread dump when tests fail due to timeout. (Andrey + Klochkov via atm) + + HADOOP-8806. libhadoop.so: dlopen should be better at locating + libsnappy.so, etc. (Colin Patrick McCabe via eli) + + HADOOP-8812. ExitUtil#terminate should print Exception#toString. (eli) + + HADOOP-8736. Add Builder for building RPC server. (Brandon Li via Suresh) + + HDFS-3957. Change MutableQuantiles to use a shared thread for rolling + over metrics. (Andrew Wang via todd) + + HADOOP-8851. Use -XX:+HeapDumpOnOutOfMemoryError JVM option in the forked + tests. (Ivan A. Veselovsky via atm) + + HADOOP-8783. Improve RPC.Server's digest auth (daryn) + + HADOOP-8889. Upgrade to Surefire 2.12.3 (todd) + + HADOOP-8804. Improve Web UIs when the wildcard address is used. + (Senthil Kumar via eli) + + HADOOP-8894. GenericTestUtils.waitFor should dump thread stacks on timeout + (todd) + + HADOOP-8909. Hadoop Common Maven protoc calls must not depend on external + sh script. (Chris Nauroth via suresh) + + HADOOP-8911. CRLF characters in source and text files. + (Raja Aluri via suresh) + + HADOOP-8912. Add .gitattributes file to prevent CRLF and LF mismatches + for source and text files. (Raja Aluri via suresh) + + HADOOP-8784. Improve IPC.Client's token use (daryn) + + HADOOP-8929. Add toString, other improvements for SampleQuantiles (todd) + + HADOOP-8922. Provide alternate JSONP output for JMXJsonServlet to allow + javascript in browser (Damien Hardy via bobby) + + HADOOP-8931. Add Java version to startup message. (eli) + + HADOOP-8925. Remove the packaging. (eli) + + HADOOP-8985. Add namespace declarations in .proto files for languages + other than java. (Binglin Chan via suresh) + + HADOOP-9009. Add SecurityUtil methods to get/set authentication method + (daryn via bobby) + + HADOOP-9010. Map UGI authenticationMethod to RPC authMethod (daryn via + bobby) + + HADOOP-9013. UGI should not hardcode loginUser's authenticationType (daryn + via bobby) + + HADOOP-9014. Standardize creation of SaslRpcClients (daryn via bobby) + + HADOOP-9015. Standardize creation of SaslRpcServers (daryn via bobby) + + HADOOP-8860. Split MapReduce and YARN sections in documentation navigation. + (tomwhite via tucu) + + HADOOP-9021. Enforce configured SASL method on the server (daryn via + bobby) + + HADOO-8998. set Cache-Control no-cache header on all dynamic content. (tucu) + + HADOOP-9035. Generalize setup of LoginContext (daryn via bobby) + + HADOOP-9093. Move all the Exception in PathExceptions to o.a.h.fs package. + (suresh) + + HADOOP-9042. Add a test for umask in FileSystemContractBaseTest. + (Colin McCabe via eli) + + HADOOP-9127. Update documentation for ZooKeeper Failover Controller. + (Daisuke Kobayashi via atm) + + HADOOP-9004. Allow security unit tests to use external KDC. (Stephen Chu + via suresh) + + HADOOP-9147. Add missing fields to FIleStatus.toString. + (Jonathan Allen via suresh) + + HADOOP-8427. Convert Forrest docs to APT, incremental. (adi2 via tucu) + + HADOOP-9162. Add utility to check native library availability. + (Binglin Chang via suresh) + + HADOOP-9173. Add security token protobuf definition to common and + use it in hdfs. (suresh) + + HADOOP-9119. Add test to FileSystemContractBaseTest to verify integrity + of overwritten files. (Steve Loughran via suresh) + + HADOOP-9192. Move token related request/response messages to common. + (suresh) + + HADOOP-8712. Change default hadoop.security.group.mapping to + JniBasedUnixGroupsNetgroupMappingWithFallback (Robert Parker via todd) + + HADOOP-9106. Allow configuration of IPC connect timeout. + (Rober Parker via suresh) + + HADOOP-9216. CompressionCodecFactory#getCodecClasses should trim the + result of parsing by Configuration. (Tsuyoshi Ozawa via todd) + + HADOOP-9231. Parametrize staging URL for the uniformity of + distributionManagement. (Konstantin Boudnik via suresh) + + HADOOP-9276. Allow BoundedByteArrayOutputStream to be resettable. + (Arun Murthy via hitesh) + + HADOOP-7688. Add servlet handler check in HttpServer.start(). + (Uma Maheswara Rao G via szetszwo) + + HADOOP-7886. Add toString to FileStatus. (SreeHari via jghoman) + + OPTIMIZATIONS + + HADOOP-8866. SampleQuantiles#query is O(N^2) instead of O(N). (Andrew Wang + via atm) + + HADOOP-8926. hadoop.util.PureJavaCrc32 cache hit-ratio is low for static + data (Gopal V via bobby) + + BUG FIXES + + HADOOP-9041. FsUrlStreamHandlerFactory could cause an infinite loop in + FileSystem initialization. (Yanbo Liang and Radim Kolar via llu) + + HADOOP-8418. Update UGI Principal classes name for running with + IBM JDK on 64 bits Windows. (Yu Gao via eyang) + + HADOOP-8795. BASH tab completion doesn't look in PATH, assumes path to + executable is specified. (Sean Mackrory via atm) + + HADOOP-8780. Update DeprecatedProperties apt file. (Ahmed Radwan via + tomwhite) + + HADOOP-8833. fs -text should make sure to call inputstream.seek(0) + before using input stream. (tomwhite and harsh) + + HADOOP-8791. Fix rm command documentation to indicte it deletes + files and not directories. (Jing Zhao via suresh) + + HADOOP-8855. SSL-based image transfer does not work when Kerberos + is disabled. (todd via eli) + + HADOOP-8616. ViewFS configuration requires a trailing slash. (Sandy Ryza + via atm) + + HADOOP-8756. Fix SEGV when libsnappy is in java.library.path but + not LD_LIBRARY_PATH. (Colin Patrick McCabe via eli) + + HADOOP-8881. FileBasedKeyStoresFactory initialization logging should + be debug not info. (tucu) + + HADOOP-8913. hadoop-metrics2.properties should give units in comment + for sampling period. (Sandy Ryza via suresh) + + HADOOP-8878. Uppercase namenode hostname causes hadoop dfs calls with + webhdfs filesystem and fsck to fail when security is on. + (Arpit Gupta via suresh) + + HADOOP-8901. GZip and Snappy support may not work without unversioned + libraries (Colin Patrick McCabe via todd) + + HADOOP-8883. Anonymous fallback in KerberosAuthenticator is broken. + (rkanter via tucu) + + HADOOP-8900. BuiltInGzipDecompressor throws IOException - stored gzip size + doesn't match decompressed size. (Andy Isaacson via suresh) + + HADOOP-8948. TestFileUtil.testGetDU fails on Windows due to incorrect + assumption of line separator. (Chris Nauroth via suresh) + + HADOOP-8951. RunJar to fail with user-comprehensible error + message if jar missing. (stevel via suresh) + + HADOOP-8713. TestRPCCompatibility fails intermittently with JDK7 + (Trevor Robinson via tgraves) + + HADOOP-9012. IPC Client sends wrong connection context (daryn via bobby) + + HADOOP-7115. Add a cache for getpwuid_r and getpwgid_r calls (tucu) + + HADOOP-6607. Add different variants of non caching HTTP headers. (tucu) + + HADOOP-9049. DelegationTokenRenewer needs to be Singleton and FileSystems + should register/deregister to/from. (Karthik Kambatla via tomwhite) + + HADOOP-9064. Augment DelegationTokenRenewer API to cancel the tokens on + calls to removeRenewAction. (kkambatl via tucu) + + HADOOP-9103. UTF8 class does not properly decode Unicode characters + outside the basic multilingual plane. (todd) + + HADOOP-9070. Kerberos SASL server cannot find kerberos key. (daryn via atm) + + HADOOP-6762. Exception while doing RPC I/O closes channel + (Sam Rash and todd via todd) + + HADOOP-9126. FormatZK and ZKFC startup can fail due to zkclient connection + establishment delay. (Rakesh R and todd via todd) + + HADOOP-9113. o.a.h.fs.TestDelegationTokenRenewer is failing intermittently. + (Karthik Kambatla via eli) + + HADOOP-9135. JniBasedUnixGroupsMappingWithFallback should log at debug + rather than info during fallback. (Colin Patrick McCabe via todd) + + HADOOP-9152. HDFS can report negative DFS Used on clusters with very small + amounts of data. (Brock Noland via atm) + + HADOOP-9153. Support createNonRecursive in ViewFileSystem. + (Sandy Ryza via tomwhite) + + HADOOP-9181. Set daemon flag for HttpServer's QueuedThreadPool. + (Liang Xie via suresh) + + HADOOP-9155. FsPermission should have different default value, 777 for + directory and 666 for file. (Binglin Chang via atm) + + HADOOP-9183. Potential deadlock in ActiveStandbyElector. (tomwhite) + + HADOOP-9203. RPCCallBenchmark should find a random available port. + (Andrew Purtell via suresh) + + HADOOP-9178. src/main/conf is missing hadoop-policy.xml. + (Sandy Ryza via eli) + + HADOOP-8816. HTTP Error 413 full HEAD if using kerberos authentication. + (moritzmoeller via tucu) + + HADOOP-9212. Potential deadlock in FileSystem.Cache/IPC/UGI. (tomwhite) + + HADOOP-8589 ViewFs tests fail when tests and home dirs are nested. + (sanjay Radia) + + HADOOP-9193. hadoop script can inadvertently expand wildcard arguments + when delegating to hdfs script. (Andy Isaacson via todd) + + HADOOP-9215. when using cmake-2.6, libhadoop.so doesn't get created + (only libhadoop.so.1.0.0) (Colin Patrick McCabe via todd) + + HADOOP-8857. hadoop.http.authentication.signature.secret.file docs + should not state that secret is randomly generated. (tucu) + + HADOOP-9190. packaging docs is broken. (Andy Isaacson via tgraves) + + HADOOP-9221. Convert remaining xdocs to APT. (Andy Isaacson via atm) + + HADOOP-8981. TestMetricsSystemImpl fails on Windows. (Xuan Gong via suresh) + + HADOOP-9124. SortedMapWritable violates contract of Map interface for + equals() and hashCode(). (Surenkumar Nihalani via tomwhite) + + HADOOP-9278. Fix the file handle leak in HarMetaData.parseMetaData() in + HarFileSystem. (Chris Nauroth via szetszwo) + + HADOOP-9252. In StringUtils, humanReadableInt(..) has a race condition and + the synchronization of limitDecimalTo2(double) can be avoided. (szetszwo) + + HADOOP-9260. Hadoop version may be not correct when starting name node or + data node. (Chris Nauroth via jlowe) + + HADOOP-9289. FsShell rm -f fails for non-matching globs. (Daryn Sharp via + suresh) + +Release 2.0.2-alpha - 2012-09-07 + + INCOMPATIBLE CHANGES + + HADOOP-8388. Remove unused BlockLocation serialization. + (Colin Patrick McCabe via eli) + + HADOOP-8689. Make trash a server side configuration option. (eli) + + HADOOP-8710. Remove ability for users to easily run the trash emptire. (eli) + + HADOOP-8794. Rename YARN_HOME to HADOOP_YARN_HOME. (vinodkv via acmurthy) + + NEW FEATURES + + HDFS-3042. Automatic failover support for NameNode HA (todd) + (see dedicated section below for breakdown of subtasks) + + HADOOP-8135. Add ByteBufferReadable interface to FSDataInputStream. (Henry + Robinson via atm) + + HADOOP-8458. Add management hook to AuthenticationHandler to enable + delegation token operations support (tucu) + + HADOOP-8465. hadoop-auth should support ephemeral authentication (tucu) + + HADOOP-8644. AuthenticatedURL should be able to use SSLFactory. (tucu) + + HADOOP-8581. add support for HTTPS to the web UIs. (tucu) + + HADOOP-7754. Expose file descriptors from Hadoop-wrapped local + FileSystems (todd and ahmed via tucu) + + HADOOP-8240. Add a new API to allow users to specify a checksum type + on FileSystem.create(..). (Kihwal Lee via szetszwo) + + IMPROVEMENTS + + HADOOP-8340. SNAPSHOT build versions should compare as less than their eventual + final release. (todd) + + HADOOP-8361. Avoid out-of-memory problems when deserializing strings. + (Colin Patrick McCabe via eli) + + HADOOP-8224. Don't hardcode hdfs.audit.logger in the scripts. + (Tomohiko Kinebuchi via eli) + + HADOOP-8398. Cleanup BlockLocation. (eli) + + HADOOP-8422. Deprecate FileSystem#getDefault* and getServerDefault + methods that don't take a Path argument. (eli) + + HADOOP-8323. Add javadoc and tests for Text.clear() behavior (harsh) + + HADOOP-8358. Config-related WARN for dfs.web.ugi can be avoided. (harsh) + + HADOOP-8450. Remove src/test/system. (eli) + + HADOOP-8244. Improve comments on ByteBufferReadable.read. (Henry Robinson + via atm) + + HADOOP-8368. Use CMake rather than autotools to build native code (ccccabe via tucu) + + HADOOP-8524. Allow users to get source of a Configuration + parameter (harsh) + + HADOOP-8449. hadoop fs -text fails with compressed sequence files + with the codec file extension (harsh) + + HADOOP-6802. Remove FS_CLIENT_BUFFER_DIR_KEY = "fs.client.buffer.dir" + from CommonConfigurationKeys.java (not used, deprecated) + (Sho Shimauchi via harsh) + + HADOOP-3450. Add tests to Local Directory Allocator for + asserting their URI-returning capability (Sho Shimauchi via harsh) + + HADOOP-8463. hadoop.security.auth_to_local needs a key definition and doc. + (Madhukara Phatak via eli) + + HADOOP-8533. Remove parallel call ununsed capability in RPC. + (Brandon Li via suresh) + + HADOOP-8423. MapFile.Reader.get() crashes jvm or throws + EOFException on Snappy or LZO block-compressed data + (todd via harsh) + + HADOOP-8541. Better high-percentile latency metrics. (Andrew Wang via atm) + + HADOOP-8362. Improve exception message when Configuration.set() is + called with a null key or value. (Madhukara Phatak + and Suresh Srinivas via harsh) + + HADOOP-7818. DiskChecker#checkDir should fail if the directory is + not executable. (Madhukara Phatak via harsh) + + HADOOP-8531. SequenceFile Writer can throw out a better error if a + serializer or deserializer isn't available + (Madhukara Phatak via harsh) + + HADOOP-8609. IPC server logs a useless message when shutting down socket. + (Jon Zuanich via atm) + + HADOOP-8620. Add -Drequire.fuse and -Drequire.snappy. (Colin + Patrick McCabe via eli) + + HADOOP-8687. Upgrade log4j to 1.2.17. (eli) + + HADOOP-8278. Make sure components declare correct set of dependencies. + (tomwhite) + + HADOOP-8700. Use enum to define the checksum constants in DataChecksum. + (szetszwo) + + HADOOP-8686. Fix warnings in native code. (Colin Patrick McCabe via eli) + + HADOOP-8239. Add subclasses of MD5MD5CRC32FileChecksum to support file + checksum with CRC32C. (Kihwal Lee via szetszwo) + + HADOOP-8619. WritableComparator must implement no-arg constructor. + (Chris Douglas via Suresh) + + HADOOP-8075. Lower native-hadoop library log from info to debug. + (Hızır Sefa İrken via eli) + + HADOOP-8748. Refactor DFSClient retry utility methods to a new class + in org.apache.hadoop.io.retry. (Arun C Murthy via szetszwo) + + HADOOP-8754. Deprecate all the RPC.getServer() variants. (Brandon Li + via szetszwo) + + HADOOP-8801. ExitUtil#terminate should capture the exception stack trace. (eli) + + HADOOP-8819. Incorrectly & is used instead of && in some file system + implementations. (Brandon Li via suresh) + + HADOOP-7808. Port HADOOP-7510 - Add configurable option to use original + hostname in token instead of IP to allow server IP change. + (Daryn Sharp via suresh) + + BUG FIXES + + HADOOP-8372. NetUtils.normalizeHostName() incorrectly handles hostname + starting with a numeric character. (Junping Du via suresh) + + HADOOP-8393. hadoop-config.sh missing variable exports, causes Yarn jobs + to fail with ClassNotFoundException MRAppMaster. (phunt via tucu) + + HADOOP-8316. Audit logging should be disabled by default. (eli) + + HADOOP-8400. All commands warn "Kerberos krb5 configuration not found" + when security is not enabled. (tucu) + + HADOOP-8406. CompressionCodecFactory.CODEC_PROVIDERS iteration is + thread-unsafe (todd) + + HADOOP-8287. etc/hadoop is missing hadoop-env.sh (eli) + + HADOOP-8408. MR doesn't work with a non-default ViewFS mount table + and security enabled. (atm via eli) + + HADOOP-8329. Build fails with Java 7. (eli) + + HADOOP-8268. A few pom.xml across Hadoop project + may fail XML validation. (Radim Kolar via harsh) + + HADOOP-8444. Fix the tests FSMainOperationsBaseTest.java and + FileContextMainOperationsBaseTest.java to avoid potential + test failure (Madhukara Phatak via harsh) + + HADOOP-8452. DN logs backtrace when running under jsvc and /jmx is loaded + (Andy Isaacson via bobby) + + HADOOP-8460. Document proper setting of HADOOP_PID_DIR and + HADOOP_SECURE_DN_PID_DIR (bobby) + + HADOOP-8466. hadoop-client POM incorrectly excludes avro. (bmahe via tucu) + + HADOOP-8481. update BUILDING.txt to talk about cmake rather than autotools. + (Colin Patrick McCabe via eli) + + HADOOP-8485. Don't hardcode "Apache Hadoop 0.23" in the docs. (eli) + + HADOOP-8488. test-patch.sh gives +1 even if the native build fails. + (Colin Patrick McCabe via eli) + + HADOOP-8507. Avoid OOM while deserializing DelegationTokenIdentifer. + (Colin Patrick McCabe via eli) + + HADOOP-8433. Don't set HADOOP_LOG_DIR in hadoop-env.sh. + (Brahma Reddy Battula via eli) + + HADOOP-8509. JarFinder duplicate entry: META-INF/MANIFEST.MF exception (tucu) + + HADOOP-8512. AuthenticatedURL should reset the Token when the server returns + other than OK on authentication (tucu) + + HADOOP-8168. empty-string owners or groups causes {{MissingFormatWidthException}} + in o.a.h.fs.shell.Ls.ProcessPath() (ekoontz via tucu) + + HADOOP-8438. hadoop-validate-setup.sh refers to examples jar file which doesn't exist + (Devaraj K via umamahesh) + + HADOOP-8538. CMake builds fail on ARM. (Trevor Robinson via eli) + + HADOOP-8547. Package hadoop-pipes examples/bin directory (again). + (Colin Patrick McCabe via eli) + + HADOOP-8563. don't package hadoop-pipes examples/bin + (Colin Patrick McCabe via tgraves) + + HADOOP-8566. AvroReflectSerializer.accept(Class) throws a NPE if the class has no + package (primitive types and arrays). (tucu) + + HADOOP-8586. Fixup a bunch of SPNEGO misspellings. (eli) + + HADOOP-3886. Error in javadoc of Reporter, Mapper and Progressable + (Jingguo Yao via harsh) + + HADOOP-8587. HarFileSystem access of harMetaCache isn't threadsafe. (eli) + + HADOOP-8585. Fix initialization circularity between UserGroupInformation + and HadoopConfiguration. (Colin Patrick McCabe via atm) + + HADOOP-8552. Conflict: Same security.log.file for multiple users. + (kkambatl via tucu) + + HADOOP-8537. Fix TFile tests to pass even when native zlib support is not + compiled. (todd) + + HADOOP-8626. Typo in default setting for + hadoop.security.group.mapping.ldap.search.filter.user. (Jonathan Natkins + via atm) + + HADOOP-8480. The native build should honor -DskipTests. + (Colin Patrick McCabe via eli) + + HADOOP-8659. Native libraries must build with soft-float ABI for Oracle JVM + on ARM. (Trevor Robinson via todd) + + HADOOP-8654. TextInputFormat delimiter bug (Gelesh and Jason Lowe via + bobby) + + HADOOP-8614. IOUtils#skipFully hangs forever on EOF. + (Colin Patrick McCabe via eli) + + HADOOP-8720. TestLocalFileSystem should use test root subdirectory. + (Vlad Rozov via eli) + + HADOOP-8721. ZKFC should not retry 45 times when attempting a graceful + fence during a failover. (Vinayakumar B via atm) + + HADOOP-8632. Configuration leaking class-loaders (Costin Leau via bobby) + + HADOOP-4572. Can not access user logs - Jetty is not configured by default + to serve aliases/symlinks (ahmed via tucu) + + HADOOP-8660. TestPseudoAuthenticator failing with NPE. (tucu) + + HADOOP-8699. some common testcases create core-site.xml in test-classes + making other testcases to fail. (tucu) + + HADOOP-8031. Configuration class fails to find embedded .jar resources; + should use URL.openStream() (genman via tucu) + + HADOOP-8737. cmake: always use JAVA_HOME to find libjvm.so, jni.h, jni_md.h. + (Colin Patrick McCabe via eli) + + HADOOP-8747. Syntax error on cmake version 2.6 patch 2 in JNIFlags.cmake. (cmccabe via tucu) + + HADOOP-8722. Update BUILDING.txt with latest snappy info. + (Colin Patrick McCabe via eli) + + HADOOP-8764. CMake: HADOOP-8737 broke ARM build. (Trevor Robinson via eli) + + HADOOP-8770. NN should not RPC to self to find trash defaults. (eli) + + HADOOP-8648. libhadoop: native CRC32 validation crashes when + io.bytes.per.checksum=1. (Colin Patrick McCabe via eli) + + HADOOP-8766. FileContextMainOperationsBaseTest should randomize the root + dir. (Colin Patrick McCabe via atm) + + HADOOP-8749. HADOOP-8031 changed the way in which relative xincludes are handled in + Configuration. (ahmed via tucu) + + HADOOP-8431. Running distcp wo args throws IllegalArgumentException. + (Sandy Ryza via eli) + + HADOOP-8775. MR2 distcp permits non-positive value to -bandwidth option + which causes job never to complete. (Sandy Ryza via atm) + + HADOOP-8781. hadoop-config.sh should add JAVA_LIBRARY_PATH to LD_LIBRARY_PATH. (tucu) + + BREAKDOWN OF HDFS-3042 SUBTASKS + + HADOOP-8220. ZKFailoverController doesn't handle failure to become active + correctly (todd) + + HADOOP-8228. Auto HA: Refactor tests and add stress tests. (todd) + + HADOOP-8215. Security support for ZK Failover controller (todd) + + HADOOP-8245. Fix flakiness in TestZKFailoverController (todd) + + HADOOP-8257. TestZKFailoverControllerStress occasionally fails with Mockito + error (todd) + + HADOOP-8260. Replace ClientBaseWithFixes with our own modified copy of the + class (todd) + + HADOOP-8246. Auto-HA: automatically scope znode by nameservice ID (todd) + + HADOOP-8247. Add a config to enable auto-HA, which disables manual + FailoverController (todd) + + HADOOP-8306. ZKFC: improve error message when ZK is not running. (todd) + + HADOOP-8279. Allow manual failover to be invoked when auto-failover is + enabled. (todd) + + HADOOP-8276. Auto-HA: add config for java options to pass to zkfc daemon + (todd via eli) + + HADOOP-8405. ZKFC tests leak ZK instances. (todd) + +Release 2.0.0-alpha - 05-23-2012 + + INCOMPATIBLE CHANGES + + HADOOP-7920. Remove Avro Rpc. (suresh) + + NEW FEATURES + + HADOOP-7773. Add support for protocol buffer based RPC engine. + (suresh) + + HADOOP-7875. Add helper class to unwrap protobuf ServiceException. + (suresh) + + HADOOP-7454. Common side of High Availability Framework (HDFS-1623) + Contributed by Todd Lipcon, Aaron T. Myers, Eli Collins, Uma Maheswara Rao G, + Bikas Saha, Suresh Srinivas, Jitendra Nath Pandey, Hari Mankude, Brandon Li, + Sanjay Radia, Mingjie Lai, and Gregory Chanan + + HADOOP-8121. Active Directory Group Mapping Service. (Jonathan Natkins via + atm) + + HADOOP-7030. Add TableMapping topology implementation to read host to rack + mapping from a file. (Patrick Angeles and tomwhite via tomwhite) + + HADOOP-8206. Common portion of a ZK-based failover controller (todd) + + HADOOP-8210. Common side of HDFS-3148: The client should be able + to use multiple local interfaces for data transfer. (eli) + + HADOOP-8343. Allow configuration of authorization for JmxJsonServlet and + MetricsServlet (tucu) + + IMPROVEMENTS + + HADOOP-7524. Change RPC to allow multiple protocols including multuple + versions of the same protocol (sanjay Radia) + + HADOOP-7607. Simplify the RPC proxy cleanup process. (atm) + + HADOOP-7687. Make getProtocolSignature public (sanjay) + + HADOOP-7693. Enhance AvroRpcEngine to support the new #addProtocol + interface introduced in HADOOP-7524. (cutting) + + HADOOP-7716. RPC protocol registration on SS does not log the protocol name + (only the class which may be different) (sanjay) + + HADOOP-7776. Make the Ipc-Header in a RPC-Payload an explicit header. + (sanjay) + + HADOOP-7862. Move the support for multiple protocols to lower layer so + that Writable, PB and Avro can all use it (Sanjay) + + HADOOP-7876. Provided access to encoded key in DelegationKey for + use in protobuf based RPCs. (suresh) + + HADOOP-7899. Generate proto java files as part of the build. (tucu) + + HADOOP-7957. Classes deriving GetGroupsBase should be able to override + proxy creation. (jitendra) + + HADOOP-7965. Support for protocol version and signature in PB. (jitendra) + + HADOOP-8070. Add a standalone benchmark for RPC call performance. (todd) + + HADOOP-8084. Updates ProtoBufRpc engine to not do an unnecessary copy + for RPC request/response. (ddas) + + HADOOP-8085. Add RPC metrics to ProtobufRpcEngine. (Hari Mankude via + suresh) + + HADOOP-8098. KerberosAuthenticatorHandler should use _HOST replacement to + resolve principal name (tucu) + + HADOOP-8118. In metrics2.util.MBeans, change log level to trace for the + stack trace of InstanceAlreadyExistsException. (szetszwo) + + HADOOP-8125. make hadoop-client set of curated jars available in a + distribution tarball (rvs via tucu) + + HADOOP-7717. Move handling of concurrent client fail-overs to + RetryInvocationHandler (atm) + + HADOOP-7728. Enable task memory management to be configurable in hadoop + config setup script. (ramya) + + HADOOP-7358. Improve log levels when exceptions caught in RPC handler + (Todd Lipcon via shv) + + HADOOP-7557 Make IPC header be extensible (sanjay radia) + + HADOOP-7806. Support binding to sub-interfaces (eli) + + HADOOP-6941. Adds support for building Hadoop with IBM's JDK + (Stephen Watt, Eli and ddas) + + HADOOP-8183. Stop using "mapred.used.genericoptions.parser" (harsh) + + HADOOP-6924. Adds a directory to the list of directories to search + for the libjvm.so file. The new directory is found by running a 'find' + command and the first output is taken. This was done to handle the + build of Hadoop with IBM's JDK. (Stephen Watt, Guillermo Cabrera and ddas) + + HADOOP-8200. Remove HADOOP_[JOBTRACKER|TASKTRACKER]_OPTS. (eli) + + HADOOP-8184. ProtoBuf RPC engine uses the IPC layer reply packet. + (Sanjay Radia via szetszwo) + + HADOOP-8163. Improve ActiveStandbyElector to provide hooks for + fencing old active. (todd) + + HADOOP-8193. Refactor FailoverController/HAAdmin code to add an abstract + class for "target" services. (todd) + + HADOOP-8212. Improve ActiveStandbyElector's behavior when session expires + (todd) + + HADOOP-8216. Address log4j.properties inconsistencies btw main and + template dirs. (Patrick Hunt via eli) + + HADOOP-8149. Cap space usage of default log4j rolling policy. + (Patrick Hunt via eli) + + HADOOP-8211. Update commons-net version to 3.1. (eli) + + HADOOP-8236. haadmin should have configurable timeouts for failover + commands. (todd) + + HADOOP-8242. AbstractDelegationTokenIdentifier: add getter methods + for owner and realuser. (Colin Patrick McCabe via eli) + + HADOOP-8007. Use substitution tokens for fencing argument (todd) + + HADOOP-8077. HA: fencing method should be able to be configured on + a per-NN or per-NS basis (todd) + + HADOOP-8086. KerberosName silently sets defaultRealm to "" if the + Kerberos config is not found, it should log a WARN (tucu) + + HADOOP-8280. Move VersionUtil/TestVersionUtil and GenericTestUtils from + HDFS into Common. (Ahmed Radwan via atm) + + HADOOP-8117. Upgrade test build to Surefire 2.12 (todd) + + HADOOP-8152. Expand public APIs for security library classes. (atm via eli) + + HADOOP-7549. Use JDK ServiceLoader mechanism to find FileSystem implementations. (tucu) + + HADOOP-8185. Update namenode -format documentation and add -nonInteractive + and -force. (Arpit Gupta via atm) + + HADOOP-8214. make hadoop script recognize a full set of deprecated commands (rvs via tucu) + + HADOOP-8347. Hadoop Common logs misspell 'successful'. + (Philip Zeyliger via eli) + + HADOOP-8350. Improve NetUtils.getInputStream to return a stream which has + a tunable timeout. (todd) + + HADOOP-8356. FileSystem service loading mechanism should print the FileSystem + impl it is failing to load (tucu) + + HADOOP-8353. hadoop-daemon.sh and yarn-daemon.sh can be misleading on stop. + (Roman Shaposhnik via atm) + + HADOOP-8113. Correction to BUILDING.txt: HDFS needs ProtocolBuffer, too + (not just MapReduce). Contributed by Eugene Koontz. + + HADOOP-8285 Use ProtoBuf for RpcPayLoadHeader (sanjay radia) + + HADOOP-8366 Use ProtoBuf for RpcResponseHeader (sanjay radia) + + HADOOP-7729. Send back valid HTTP response if user hits IPC port with + HTTP GET. (todd) + + HADOOP-7987. Support setting the run-as user in unsecure mode. (jitendra) + + HADOOP-7994. Remove getProtocolVersion and getProtocolSignature from the + client side translator and server side implementation. (jitendra) + + HADOOP-8367 Improve documentation of declaringClassProtocolName in + rpc headers. (Sanjay Radia) + + HADOOP-8624. ProtobufRpcEngine should log all RPCs if TRACE logging is + enabled (todd) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-8199. Fix issues in start-all.sh and stop-all.sh (Devaraj K via umamahesh) + + HADOOP-7635. RetryInvocationHandler should release underlying resources on + close. (atm) + + HADOOP-7695. RPC.stopProxy can throw unintended exception while logging + error. (atm) + + HADOOP-7833. Fix findbugs warnings in protobuf generated code. + (John Lee via suresh) + + HADOOP-7897. ProtobufRpcEngine client side exception mechanism is not + consistent with WritableRpcEngine. (suresh) + + HADOOP-7913. Fix bug in ProtoBufRpcEngine. (sanjay) + + HADOOP-7892. IPC logs too verbose after "RpcKind" introduction. (todd) + + HADOOP-7968. Errant println left in RPC.getHighestSupportedProtocol. (Sho + Shimauchi via harsh) + + HADOOP-7931. o.a.h.ipc.WritableRpcEngine should have a way to force + initialization. (atm) + + HADOOP-8104. Inconsistent Jackson versions (tucu) + + HADOOP-8119. Fix javac warnings in TestAuthenticationFilter in hadoop-auth. + (szetszwo) + + HADOOP-7888. TestFailoverProxy fails intermittently on trunk. (Jason Lowe + via atm) + + HADOOP-8154. DNS#getIPs shouldn't silently return the local host + IP for bogus interface names. (eli) + + HADOOP-8169. javadoc generation fails with java.lang.OutOfMemoryError: + Java heap space (tgraves via bobby) + + HADOOP-8167. Configuration deprecation logic breaks backwards compatibility (tucu) + + HADOOP-8189. LdapGroupsMapping shouldn't throw away IOException. (Jonathan Natkins via atm) + + HADOOP-8191. SshFenceByTcpPort uses netcat incorrectly (todd) + + HADOOP-8157. Fix race condition in Configuration that could cause spurious + ClassNotFoundExceptions after a GC. (todd) + + HADOOP-8197. Configuration logs WARNs on every use of a deprecated key (tucu) + + HADOOP-8159. NetworkTopology: getLeaf should check for invalid topologies. + (Colin Patrick McCabe via eli) + + HADOOP-8204. TestHealthMonitor fails occasionally (todd) + + HADOOP-8202. RPC stopProxy() does not close the proxy correctly. + (Hari Mankude via suresh) + + HADOOP-8218. RPC.closeProxy shouldn't throw error when closing a mock + (todd) + + HADOOP-8238. NetUtils#getHostNameOfIP blows up if given ip:port + string w/o port. (eli) + + HADOOP-8243. Security support broken in CLI (manual) failover controller + (todd) + + HADOOP-8251. Fix SecurityUtil.fetchServiceTicket after HADOOP-6941 (todd) + + HADOOP-8249. invalid hadoop-auth cookies should trigger authentication + if info is avail before returning HTTP 401 (tucu) + + HADOOP-8261. Har file system doesn't deal with FS URIs with a host but no + port. (atm) + + HADOOP-8263. Stringification of IPC calls not useful (todd) + + HADOOP-8264. Remove irritating double double quotes in front of hostname + (Bernd Fondermann via bobby) + + HADOOP-8270. hadoop-daemon.sh stop action should return 0 for an + already stopped service. (Roman Shaposhnik via eli) + + HADOOP-8144. pseudoSortByDistance in NetworkTopology doesn't work + properly if no local node and first node is local rack node. + (Junping Du) + + HADOOP-8282. start-all.sh refers incorrectly start-dfs.sh + existence for starting start-yarn.sh. (Devaraj K via eli) + + HADOOP-7350. Use ServiceLoader to discover compression codec classes. + (tomwhite) + + HADOOP-8284. clover integration broken, also mapreduce poms are pulling + in clover as a dependency. (phunt via tucu) + + HADOOP-8309. Pseudo & Kerberos AuthenticationHandler should use + getType() to create token (tucu) + + HADOOP-8314. HttpServer#hasAdminAccess should return false if + authorization is enabled but user is not authenticated. (tucu) + + HADOOP-8296. hadoop/yarn daemonlog usage wrong (Devaraj K via tgraves) + + HADOOP-8310. FileContext#checkPath should handle URIs with no port. (atm) + + HADOOP-8321. TestUrlStreamHandler fails. (tucu) + + HADOOP-8325. Add a ShutdownHookManager to be used by different + components instead of the JVM shutdownhook (tucu) + + HADOOP-8275. Range check DelegationKey length. + (Colin Patrick McCabe via eli) + + HADOOP-8342. HDFS command fails with exception following merge of + HADOOP-8325 (tucu) + + HADOOP-8346. Makes oid changes to make SPNEGO work. Was broken due + to fixes introduced by the IBM JDK compatibility patch. (ddas) + + HADOOP-8355. SPNEGO filter throws/logs exception when authentication fails (tucu) + + HADOOP-8349. ViewFS doesn't work when the root of a file system is mounted. (atm) + + HADOOP-8328. Duplicate FileSystem Statistics object for 'file' scheme. + (tomwhite) + + HADOOP-8359. Fix javadoc warnings in Configuration. (Anupam Seth via + szetszwo) + + HADOOP-7988. Upper case in hostname part of the principals doesn't work with + kerberos. (jitendra) + + BREAKDOWN OF HADOOP-7454 SUBTASKS + + HADOOP-7455. HA: Introduce HA Service Protocol Interface. (suresh) + + HADOOP-7774. HA: Administrative CLI to control HA daemons. (todd) + + HADOOP-7896. HA: if both NNs are in Standby mode, client needs to try failing + back and forth several times with sleeps. (atm) + + HADOOP-7922. Improve some logging for client IPC failovers and + StandbyExceptions (todd) + + HADOOP-7921. StandbyException should extend IOException (todd) + + HADOOP-7928. HA: Client failover policy is incorrectly trying to fail over all + IOExceptions (atm) + + HADOOP-7925. Add interface and update CLI to query current state to + HAServiceProtocol (eli via todd) + + HADOOP-7932. Make client connection retries on socket time outs configurable. + (Uma Maheswara Rao G via todd) + + HADOOP-7924. FailoverController for client-based configuration (eli) + + HADOOP-7961. Move HA fencing to common. (eli) + + HADOOP-7970. HAServiceProtocol methods must throw IOException. (Hari Mankude + via suresh). + + HADOOP-7992. Add ZKClient library to facilitate leader election. (Bikas Saha + via suresh). + + HADOOP-7983. HA: failover should be able to pass args to fencers. (eli) + + HADOOP-7938. HA: the FailoverController should optionally fence the active + during failover. (eli) + + HADOOP-7991. HA: the FailoverController should check the standby is ready + before failing over. (eli) + + HADOOP-8038. Add 'ipc.client.connect.max.retries.on.timeouts' entry in + core-default.xml file. (Uma Maheswara Rao G via atm) + + HADOOP-8041. Log a warning when a failover is first attempted (todd) + + HADOOP-8068. void methods can swallow exceptions when going through failover + path (todd) + + HADOOP-8116. RetriableCommand is using RetryPolicy incorrectly after + HADOOP-7896. (atm) + + HADOOP-8317. Update maven-assembly-plugin to 2.3 - fix build on FreeBSD + (Radim Kolar via bobby) + + HADOOP-8172. Configuration no longer sets all keys in a deprecated key + list. (Anupam Seth via bobby) + + HADOOP-7868. Hadoop native fails to compile when default linker + option is -Wl,--as-needed. (Trevor Robinson via eli) + + HADOOP-8655. Fix TextInputFormat for large deliminators. (Gelesh via + bobby) + + HADOOP-7900. LocalDirAllocator confChanged() accesses conf.get() twice + (Ravi Gummadi via Uma Maheswara Rao G) + + HADOOP-8146. FsShell commands cannot be interrupted + (Daryn Sharp via Uma Maheswara Rao G) + + HADOOP-8018. Hudson auto test for HDFS has started throwing javadoc + (Jon Eagles via bobby) + + HADOOP-8001 ChecksumFileSystem's rename doesn't correctly handle checksum + files. (Daryn Sharp via bobby) + + HADOOP-8006 TestFSInputChecker is failing in trunk. + (Daryn Sharp via bobby) + + HADOOP-7998. CheckFileSystem does not correctly honor setVerifyChecksum + (Daryn Sharp via bobby) + + HADOOP-7606. Upgrade Jackson to version 1.7.1 to match the version required + by Jersey (Alejandro Abdelnur via atm) + +Release 0.23.9 - UNRELEASED + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + OPTIMIZATIONS + + BUG FIXES + +Release 0.23.8 - 2013-06-05 + + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-9222. Cover package with org.apache.hadoop.io.lz4 unit tests (Vadim + Bondarev via jlowe) + + HADOOP-9233. Cover package org.apache.hadoop.io.compress.zlib with unit + tests (Vadim Bondarev via jlowe) + + HADOOP-9469. mapreduce/yarn source jars not included in dist tarball + (Robert Parker via tgraves) + + HADOOP-9504. MetricsDynamicMBeanBase has concurrency issues in + createMBeanInfo (Liang Xie via jlowe) + + HADOOP-9614. smart-test-patch.sh hangs for new version of patch (2.7.1) + (Ravi Prakash via jeagles) + +Release 0.23.7 - 2013-04-18 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + HADOOP-8849. FileUtil#fullyDelete should grant the target directories +rwx + permissions (Ivan A. Veselovsky via bobby) + + HADOOP-9067. provide test for LocalFileSystem.reportChecksumFailure + (Ivan A. Veselovsky via bobby) + + HADOOP-9336. Allow UGI of current connection to be queried. (Daryn Sharp + via kihwal) + + HADOOP-9352. Expose UGI.setLoginUser for tests (daryn) + + HADOOP-9209. Add shell command to dump file checksums (Todd Lipcon via + jeagles) + + HADOOP-9374. Add tokens from -tokenCacheFile into UGI (daryn) + + HADOOP-8711. IPC Server supports adding exceptions for which + the message is printed and the stack trace is not printed to avoid chatter. + (Brandon Li via Suresh) + + + OPTIMIZATIONS + + HADOOP-8462. Native-code implementation of bzip2 codec. (Govind Kamat via + jlowe) + + BUG FIXES + + HADOOP-9302. HDFS docs not linked from top level (Andy Isaacson via + tgraves) + + HADOOP-9303. command manual dfsadmin missing entry for restoreFailedStorage + option (Andy Isaacson via tgraves) + + HADOOP-9339. IPC.Server incorrectly sets UGI auth type (Daryn Sharp via + kihwal) + +Release 0.23.6 - 2013-02-06 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + HADOOP-9217. Print thread dumps when hadoop-common tests fail. + (Andrey Klochkov via suresh) + + HADOOP-9247. Parametrize Clover "generateXxx" properties to make them + re-definable via -D in mvn calls. (Ivan A. Veselovsky via suresh) + + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-9072. Hadoop-Common-0.23-Build Fails to build in Jenkins + (Robert Parker via tgraves) + + HADOOP-8992. Enhance unit-test coverage of class HarFileSystem (Ivan A. + Veselovsky via bobby) + + HADOOP-9038. unit-tests for AllocatorPerContext.PathIterator (Ivan A. + Veselovsky via bobby) + + HADOOP-9105. FsShell -moveFromLocal erroneously fails (daryn via bobby) + + HADOOP-9097. Maven RAT plugin is not checking all source files (tgraves) + + HADOOP-9255. relnotes.py missing last jira (tgraves) + +Release 0.23.5 - 2012-11-28 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + HADOOP-8932. JNI-based user-group mapping modules can be too chatty on + lookup failures. (Kihwal Lee via suresh) + + HADOOP-8930. Cumulative code coverage calculation (Andrey Klochkov via + bobby) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-8906. paths with multiple globs are unreliable. (Daryn Sharp via + jlowe) + + HADOOP-8811. Compile hadoop native library in FreeBSD (Radim Kolar via + bobby) + + HADOOP-8962. RawLocalFileSystem.listStatus fails when a child filename + contains a colon (jlowe via bobby) + + HADOOP-8986. Server$Call object is never released after it is sent (bobby) + + HADOOP-9022. Hadoop distcp tool fails to copy file if -m 0 specified + (Jonathan Eagles vai bobby) + + HADOOP-9025. org.apache.hadoop.tools.TestCopyListing failing (Jonathan + Eagles via jlowe) + +Release 0.23.4 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + HADOOP-8822. relnotes.py was deleted post mavenization (bobby) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-8843. Old trash directories are never deleted on upgrade + from 1.x (jlowe) + + HADOOP-8684. Deadlock between WritableComparator and WritableComparable. + (Jing Zhao via suresh) + +Release 0.23.3 + + INCOMPATIBLE CHANGES + + HADOOP-7967. Need generalized multi-token filesystem support (daryn) + + NEW FEATURES + + IMPROVEMENTS + + HADOOP-8108. Move method getHostPortString() from NameNode to NetUtils. + (Brandon Li via jitendra) + + HADOOP-8288. Remove references of mapred.child.ulimit etc. since they are + not being used any more (Ravi Prakash via bobby) + + HADOOP-8535. Cut hadoop build times in half (Job Eagles via bobby) + + HADOOP-8525. Provide Improved Traceability for Configuration (bobby) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-8088. User-group mapping cache incorrectly does negative caching on + transient failures (Khiwal Lee via bobby) + + HADOOP-8179. risk of NPE in CopyCommands processArguments() (Daryn Sharp + via bobby) + + HADOOP-6963. In FileUtil.getDU(..), neither include the size of directories + nor follow symbolic links. (Ravi Prakash via szetszwo) + + HADOOP-8180. Remove hsqldb since its not needed from pom.xml (Ravi Prakash + via tgraves) + + HADOOP-8014. ViewFileSystem does not correctly implement getDefaultBlockSize, + getDefaultReplication, getContentSummary (John George via bobby) + + HADOOP-7510. Tokens should use original hostname provided instead of ip + (Daryn Sharp via bobby) + + HADOOP-8283. Allow tests to control token service value (Daryn Sharp via + bobby) + + HADOOP-8286. Simplify getting a socket address from conf (Daryn Sharp via + bobby) + + HADOOP-8227. Allow RPC to limit ephemeral port range. (bobby) + + HADOOP-8305. distcp over viewfs is broken (John George via bobby) + + HADOOP-8334. HttpServer sometimes returns incorrect port (Daryn Sharp via + bobby) + + HADOOP-8330. Update TestSequenceFile.testCreateUsesFsArg() for HADOOP-8305. + (John George via szetszwo) + + HADOOP-8335. Improve Configuration's address handling (Daryn Sharp via + bobby) + + HADOOP-8327. distcpv2 and distcpv1 jars should not coexist (Dave Thompson + via bobby) + + HADOOP-8341. Fix or filter findbugs issues in hadoop-tools (bobby) + + HADOOP-8373. Port RPC.getServerAddress to 0.23 (Daryn Sharp via bobby) + + HADOOP-8495. Update Netty to avoid leaking file descriptors during shuffle + (Jason Lowe via tgraves) + + HADOOP-8129. ViewFileSystemTestSetup setupForViewFileSystem is erring + (Ahmed Radwan and Ravi Prakash via bobby) + + HADOOP-8573. Configuration tries to read from an inputstream resource + multiple times (Robert Evans via tgraves) + + HADOOP-8599. Non empty response from FileSystem.getFileBlockLocations when + asking for data beyond the end of file. (Andrey Klochkov via todd) + + HADOOP-8606. FileSystem.get may return the wrong filesystem (Daryn Sharp + via bobby) + + HADOOP-8551. fs -mkdir creates parent directories without the -p option + (John George via bobby) + + HADOOP-8613. AbstractDelegationTokenIdentifier#getUser() should set token + auth type. (daryn) + + HADOOP-8627. FS deleteOnExit may delete the wrong path (daryn via bobby) + + HADOOP-8634. Ensure FileSystem#close doesn't squawk for deleteOnExit paths + (daryn via bobby) + + HADOOP-8550. hadoop fs -touchz automatically created parent directories + (John George via bobby) + + HADOOP-8635. Cannot cancel paths registered deleteOnExit (daryn via bobby) + + HADOOP-8637. FilterFileSystem#setWriteChecksum is broken (daryn via bobby) + + HADOOP-8370. Native build failure: javah: class file for + org.apache.hadoop.classification.InterfaceAudience not found (Trevor + Robinson via tgraves) + + HADOOP-8633. Interrupted FsShell copies may leave tmp files (Daryn Sharp + via tgraves) + + HADOOP-8703. distcpV2: turn CRC checking off for 0 byte size (Dave + Thompson via bobby) + + HADOOP-8390. TestFileSystemCanonicalization fails with JDK7 (Trevor + Robinson via tgraves) + + HADOOP-8692. TestLocalDirAllocator fails intermittently with JDK7 + (Trevor Robinson via tgraves) + + HADOOP-8693. TestSecurityUtil fails intermittently with JDK7 (Trevor + Robinson via tgraves) + + HADOOP-8697. TestWritableName fails intermittently with JDK7 (Trevor + Robinson via tgraves) + + HADOOP-8695. TestPathData fails intermittently with JDK7 (Trevor + Robinson via tgraves) + + HADOOP-8611. Allow fall-back to the shell-based implementation when + JNI-based users-group mapping fails (Robert Parker via bobby) + + HADOOP-8225. DistCp fails when invoked by Oozie (daryn via bobby) + + HADOOP-8709. globStatus changed behavior from 0.20/1.x (Jason Lowe via + bobby) + + HADOOP-8725. MR is broken when security is off (daryn via bobby) + + HADOOP-8726. The Secrets in Credentials are not available to MR tasks + (daryn and Benoy Antony via bobby) + + HADOOP-8727. Gracefully deprecate dfs.umaskmode in 2.x onwards (Harsh J + via bobby) + +Release 0.23.2 - UNRELEASED + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + HADOOP-8048. Allow merging of Credentials (Daryn Sharp via tgraves) + + HADOOP-8032. mvn site:stage-deploy should be able to use the scp protocol + to stage documents (Ravi Prakash via tgraves) + + HADOOP-7923. Automate the updating of version numbers in the doc system. + (szetszwo) + + HADOOP-8137. Added links to CLI manuals to the site. (tgraves via + acmurthy) + + OPTIMIZATIONS + HADOOP-8071. Avoid an extra packet in client code when nagling is + disabled. (todd) + + HADOOP-6502. Improve the performance of Configuration.getClassByName when + the class is not found by caching negative results. + (sharad, todd via todd) + + BUG FIXES + + HADOOP-7660. Maven generated .classpath doesnot includes + "target/generated-test-source/java" as source directory. + (Laxman via bobby) + + HADOOP-8042 When copying a file out of HDFS, modifying it, and uploading + it back into HDFS, the put fails due to a CRC mismatch + (Daryn Sharp via bobby) + + HADOOP-8035 Hadoop Maven site is inefficient and runs phases redundantly + (abayer via tucu) + + HADOOP-8051 HttpFS documentation it is not wired to the generated site (tucu) + + HADOOP-8055. Hadoop tarball distribution lacks a core-site.xml (harsh) + + HADOOP-8052. Hadoop Metrics2 should emit Float.MAX_VALUE (instead of + Double.MAX_VALUE) to avoid making Ganglia's gmetad core. (Varun Kapoor + via mattf) + + HADOOP-8074. Small bug in hadoop error message for unknown commands. + (Colin Patrick McCabe via eli) + + HADOOP-8082 add hadoop-client and hadoop-minicluster to the + dependency-management section. (tucu) + + HADOOP-8066 The full docs build intermittently fails (abayer via tucu) + + HADOOP-8083 javadoc generation for some modules is not done under target/ (tucu) + + HADOOP-8036. TestViewFsTrash assumes the user's home directory is + 2 levels deep. (Colin Patrick McCabe via eli) + + HADOOP-8046 Revert StaticMapping semantics to the existing ones, add DNS + mapping diagnostics in progress (stevel) + + HADOOP-8057 hadoop-setup-conf.sh not working because of some extra spaces. + (Vinayakumar B via stevel) + + HADOOP-7680 TestHardLink fails on Mac OS X, when gnu stat is in path. + (Milind Bhandarkar via stevel) + + HADOOP-8050. Deadlock in metrics. (Kihwal Lee via mattf) + + HADOOP-8131. FsShell put doesn't correctly handle a non-existent dir + (Daryn Sharp via bobby) + + HADOOP-8123. Use java.home rather than env.JAVA_HOME for java in the + project. (Jonathan Eagles via acmurthy) + + HADOOP-8064. Remove unnecessary dependency on w3c.org in document processing + (Khiwal Lee via bobby) + + HADOOP-8140. dfs -getmerge should process its argments better (Daryn Sharp + via bobby) + + HADOOP-8164. Back slash as path separator is handled for Windows only. + (Daryn Sharp via suresh) + + HADOOP-8173. FsShell needs to handle quoted metachars. (Daryn Sharp via + szetszwo) + + HADOOP-8175. Add -p option to mkdir in FsShell. (Daryn Sharp via szetszwo) + + HADOOP-8176. Disambiguate the destination of FsShell copies (Daryn Sharp + via bobby) + + HADOOP-8208. Disallow self failover. (eli) + +Release 0.23.1 - 2012-02-17 + + INCOMPATIBLE CHANGES + + NEW FEATURES + + HADOOP-7777 Implement a base class for DNSToSwitchMapping implementations + that can offer extra topology information. (stevel) + + HADOOP-7657. Add support for LZ4 compression. (Binglin Chang via todd) + + HADOOP-7910. Add Configuration.getLongBytes to handle human readable byte size values. (Sho Shimauchi via harsh) + + + IMPROVEMENTS + + HADOOP-7801. HADOOP_PREFIX cannot be overriden. (Bruno Mahé via tomwhite) + + HADOOP-7802. Hadoop scripts unconditionally source + "$bin"/../libexec/hadoop-config.sh. (Bruno Mahé via tomwhite) + + HADOOP-7858. Drop some info logging to DEBUG level in IPC, + metrics, and HTTP. (todd via eli) + + HADOOP-7424. Log an error if the topology script doesn't handle multiple args. + (Uma Maheswara Rao G via eli) + + HADOOP-7804. Enable hadoop config generator to set configurations to enable + short circuit read. (Arpit Gupta via jitendra) + + HADOOP-7877. Update balancer CLI usage documentation to include the new + -policy option. (szetszwo) + + HADOOP-6840. Support non-recursive create() in FileSystem and + SequenceFile.Writer. (jitendra and eli via eli) + + HADOOP-6886. LocalFileSystem Needs createNonRecursive API. + (Nicolas Spiegelberg and eli via eli) + + HADOOP-7912. test-patch should run eclipse:eclipse to verify that it does + not break again. (Robert Joseph Evans via tomwhite) + + HADOOP-7890. Redirect hadoop script's deprecation message to stderr. + (Koji Knoguchi via mahadev) + + HADOOP-7504. Add the missing Ganglia31 opts to hadoop-metrics.properties as a comment. (harsh) + + HADOOP-7933. Add a getDelegationTokens api to FileSystem which checks + for known tokens in the passed Credentials object. (sseth) + + HADOOP-7737. normalize hadoop-mapreduce & hadoop-dist dist/tar build with + common/hdfs. (tucu) + + HADOOP-7743. Add Maven profile to create a full source tarball. (tucu) + + HADOOP-7758. Make GlobFilter class public. (tucu) + + HADOOP-7590. Mavenize streaming and MR examples. (tucu) + + HADOOP-7934. Normalize dependencies versions across all modules. (tucu) + + HADOOP-7348. Change 'addnl' in getmerge util to be a flag '-nl' instead. + (XieXianshan via harsh) + + HADOOP-7975. Add LZ4 as an entry in the default codec list, missed by HADOOP-7657 (harsh) + + HADOOP-4515. Configuration#getBoolean must not be case sensitive. (Sho Shimauchi via harsh) + + HADOOP-6490. Use StringUtils over String#replace in Path#normalizePath. + (Uma Maheswara Rao G via harsh) + + HADOOP-7574. Improve FSShell -stat, add user/group elements. + (XieXianshan via harsh) + + HADOOP-7736. Remove duplicate Path#normalizePath call. (harsh) + + HADOOP-7919. Remove the unused hadoop.logfile.* properties from the + core-default.xml file. (harsh) + + HADOOP-7939. Improve Hadoop subcomponent integration in Hadoop 0.23. (rvs via tucu) + + HADOOP-8002. SecurityUtil acquired token message should be a debug rather than info. + (Arpit Gupta via mahadev) + + HADOOP-8009. Create hadoop-client and hadoop-minicluster artifacts for downstream + projects. (tucu) + + HADOOP-7470. Move up to Jackson 1.8.8. (Enis Soztutar via szetszwo) + + HADOOP-8027. Visiting /jmx on the daemon web interfaces may print + unnecessary error in logs. (atm) + + HADOOP-7792. Add verifyToken method to AbstractDelegationTokenSecretManager. + (jitendra) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-7811. TestUserGroupInformation#testGetServerSideGroups test fails in chroot. + (Jonathan Eagles via mahadev) + + HADOOP-7813. Fix test-patch to use proper numerical comparison when checking + javadoc and findbugs warning counts. (Jonathan Eagles via tlipcon) + + HADOOP-7841. Run tests with non-secure random. (tlipcon) + + HADOOP-7851. Configuration.getClasses() never returns the default value. + (Uma Maheswara Rao G via amarrk) + + HADOOP-7787. Make source tarball use conventional name. + (Bruno Mahé via tomwhite) + + HADOOP-6614. RunJar should provide more diags when it can't create + a temp file. (Jonathan Hsieh via eli) + + HADOOP-7859. TestViewFsHdfs.testgetFileLinkStatus is failing an assert. (eli) + + HADOOP-7864. Building mvn site with Maven < 3.0.2 causes OOM errors. + (Andrew Bayer via eli) + + HADOOP-7854. UGI getCurrentUser is not synchronized. (Daryn Sharp via jitendra) + + HADOOP-7870. fix SequenceFile#createWriter with boolean + createParent arg to respect createParent. (Jon Hsieh via eli) + + HADOOP-7898. Fix javadoc warnings in AuthenticationToken.java. (suresh) + + HADOOP-7878 Regression: HADOOP-7777 switch changes break HDFS tests when the + isSingleSwitch() predicate is used. (stevel) + + HADOOP-7914. Remove the duplicated declaration of hadoop-hdfs test-jar in + hadoop-project/pom.xml. (szetszwo) + + HADOOP-7837. no NullAppender in the log4j config. (eli) + + HADOOP-7948. Shell scripts created by hadoop-dist/pom.xml to build tar do not + properly propagate failure. (cim_michajlomatijkiw via tucu) + + HADOOP-7949. Updated maxIdleTime default in the code to match + core-default.xml (eli) + + HADOOP-7853. multiple javax security configurations cause conflicts. + (daryn via tucu) + + HDFS-2614. hadoop dist tarball is missing hdfs headers. (tucu) + + HADOOP-7874. native libs should be under lib/native/ dir. (tucu) + + HADOOP-7887. KerberosAuthenticatorHandler is not setting + KerberosName name rules from configuration. (tucu) + + HADOOP-7902. skipping name rules setting (if already set) should be done + on UGI initialization only. (tucu) + + HADOOP-7810. move hadoop archive to core from tools. (tucu) + + HADOOP_7917. compilation of protobuf files fails in windows/cygwin. (tucu) + + HADOOP-7907. hadoop-tools JARs are not part of the distro. (tucu) + + HADOOP-7936. There's a Hoop README in the root dir of the tarball. (tucu) + + HADOOP-7963. Fix ViewFS to catch a null canonical service-name and pass + tests TestViewFileSystem* (Siddharth Seth via vinodkv) + + HADOOP-7964. Deadlock in NetUtils and SecurityUtil class initialization. + (Daryn Sharp via suresh) + + HADOOP-7974. TestViewFsTrash incorrectly determines the user's home + directory. (harsh via eli) + + HADOOP-7971. Adding back job/pipes/queue commands to bin/hadoop for + backward compatibility. (Prashath Sharma via acmurthy) + + HADOOP-7982. UserGroupInformation fails to login if thread's context + classloader can't load HadoopLoginModule. (todd) + + HADOOP-7986. Adding config for MapReduce History Server protocol in + hadoop-policy.xml for service level authorization. (Mahadev Konar via vinodkv) + + HADOOP-7981. Improve documentation for org.apache.hadoop.io.compress. + Decompressor.getRemaining (Jonathan Eagles via mahadev) + + HADOOP-7997. SequenceFile.createWriter(...createParent...) no + longer works on existing file. (Gregory Chanan via eli) + + HADOOP-7993. Hadoop ignores old-style config options for enabling compressed + output. (Anupam Seth via mahadev) + + HADOOP-8000. fetchdt command not available in bin/hadoop. + (Arpit Gupta via mahadev) + + HADOOP-7999. "hadoop archive" fails with ClassNotFoundException. + (Jason Lowe via mahadev) + + HADOOP-8012. hadoop-daemon.sh and yarn-daemon.sh are trying to mkdir + and chown log/pid dirs which can fail. (Roman Shaposhnik via eli) + + HADOOP-8013. ViewFileSystem does not honor setVerifyChecksum + (Daryn Sharp via bobby) + + HADOOP-8054 NPE with FilterFileSystem (Daryn Sharp via bobby) + +Release 0.23.0 - 2011-11-01 + + INCOMPATIBLE CHANGES + + HADOOP-6904. Support method based RPC compatiblity. (hairong) + + HADOOP-6432. Add Statistics support in FileContext. (jitendra) + + HADOOP-7136. Remove failmon contrib component. (nigel) + + NEW FEATURES + + HADOOP-7324. Ganglia plugins for metrics v2. (Priyo Mustafi via llu) + + HADOOP-7342. Add an utility API in FileUtil for JDK File.list + avoid NPEs on File.list() (Bharath Mundlapudi via mattf) + + HADOOP-7322. Adding a util method in FileUtil for directory listing, + avoid NPEs on File.listFiles() (Bharath Mundlapudi via mattf) + + HADOOP-7023. Add listCorruptFileBlocks to Filesysem. (Patrick Kling + via hairong) + + HADOOP-7096. Allow setting of end-of-record delimiter for TextInputFormat + (Ahmed Radwan via todd) + + HADOOP-6994. Api to get delegation token in AbstractFileSystem. (jitendra) + + HADOOP-7171. Support UGI in FileContext API. (jitendra) + + HADOOP-7257 Client side mount tables (sanjay) + + HADOOP-6919. New metrics2 framework. (Luke Lu via acmurthy) + + HADOOP-6920. Metrics instrumentation to move new metrics2 framework. + (Luke Lu via suresh) + + HADOOP-7214. Add Common functionality necessary to provide an equivalent + of /usr/bin/groups for Hadoop. (Aaron T. Myers via todd) + + HADOOP-6832. Add an authentication plugin using a configurable static user + for the web UI. (Owen O'Malley and Todd Lipcon via cdouglas) + + HADOOP-7144. Expose JMX metrics via JSON servlet. (Robert Joseph Evans via + cdouglas) + + HADOOP-7379. Add the ability to serialize and deserialize protocol buffers + in ObjectWritable. (todd) + + HADOOP-7206. Support Snappy compression. (Issei Yoshida and + Alejandro Abdelnur via eli) + + HADOOP-7329. Add the capability of getting invividual attribute of a mbean + using JMXProxyServlet. (tanping) + + HADOOP-7380. Add client failover functionality to o.a.h.io.(ipc|retry). + (atm via eli) + + HADOOP-7460. Support pluggable trash policies. (Usman Masoon via suresh) + + HADOOP-6385. dfs should support -rmdir (was HDFS-639). (Daryn Sharp + via mattf) + + HADOOP-7119. add Kerberos HTTP SPNEGO authentication support to Hadoop + JT/NN/DN/TT web-consoles. (Alejandro Abdelnur via atm) + + IMPROVEMENTS + + HADOOP-7655. Provide a small validation script that smoke tests the installed + cluster. (Arpit Gupta via mattf) + + HADOOP-7042. Updates to test-patch.sh to include failed test names and + improve other messaging. (nigel) + + HADOOP-7001. Configuration changes can occur via the Reconfigurable + interface. (Patrick Kling via dhruba) + + HADOOP-6764. Add number of reader threads and queue length as + configuration parameters in RPC.getServer. (Dmytro Molkov via hairong) + + HADOOP-7049. TestReconfiguration should be junit v4. + (Patrick Kling via eli) + + HADOOP-7054 Change NN LoadGenerator to use FileContext APIs + (Sanjay Radia) + + HADOOP-7060. A more elegant FileSystem#listCorruptFileBlocks API. + (Patrick Kling via hairong) + + HADOOP-7058. Expose number of bytes in FSOutputSummer buffer to + implementatins. (Todd Lipcon via hairong) + + HADOOP-7061. unprecise javadoc for CompressionCodec. (Jingguo Yao via eli) + + HADOOP-7059. Remove "unused" warning in native code. (Noah Watkins via eli) + + HADOOP-6864. Provide a JNI-based implementation of + ShellBasedUnixGroupsNetgroupMapping + (implementation of GroupMappingServiceProvider) (Erik Seffl via boryas) + + HADOOP-7078. Improve javadocs for RawComparator interface. + (Harsh J Chouraria via todd) + + HADOOP-6995. Allow wildcards to be used in ProxyUsers configurations. + (todd) + + HADOOP-6376. Add a comment header to conf/slaves that specifies the file + format. (Kay Kay via todd) + + HADOOP-7151. Document need for stable hashCode() in WritableComparable. + (Dmitriy V. Ryaboy via todd) + + HADOOP-7112. Issue a warning when GenericOptionsParser libjars are not on + local filesystem. (tomwhite) + + HADOOP-7114. FsShell should dump all exceptions at DEBUG level. + (todd via tomwhite) + + HADOOP-7159. RPC server should log the client hostname when read exception + happened. (Scott Chen via todd) + + HADOOP-7167. Allow using a file to exclude certain tests from build. (todd) + + HADOOP-7133. Batch the calls in DataStorage to FileUtil.createHardLink(). + (Matt Foley via jghoman) + + HADOOP-7166. Add DaemonFactory to common. (Erik Steffl & jitendra) + + HADOOP-7175. Add isEnabled() to Trash. (Daryn Sharp via szetszwo) + + HADOOP-7180. Better support on CommandFormat on the API and exceptions. + (Daryn Sharp via szetszwo) + + HADOOP-7202. Improve shell Command base class. (Daryn Sharp via szetszwo) + + HADOOP-7224. Add CommandFactory to shell. (Daryn Sharp via szetszwo) + + HADOOP-7014. Generalize CLITest structure and interfaces to facilitate + upstream adoption (e.g. for web testing). (cos) + + HADOOP-7230. Move "fs -help" shell command tests from HDFS to COMMOM; see + also HDFS-1844. (Daryn Sharp via szetszwo) + + HADOOP-7233. Refactor ls to conform to new FsCommand class. (Daryn Sharp + via szetszwo) + + HADOOP-7235. Refactor the tail command to conform to new FsCommand class. + (Daryn Sharp via szetszwo) + + HADOOP-7179. Federation: Improve HDFS startup scripts. (Erik Steffl + and Tanping Wang via suresh) + + HADOOP-7227. Remove protocol version check at proxy creation in Hadoop + RPC. (jitendra) + + HADOOP-7236. Refactor the mkdir command to conform to new FsCommand class. + (Daryn Sharp via szetszwo) + + HADOOP-7250. Refactor the setrep command to conform to new FsCommand class. + (Daryn Sharp via szetszwo) + + HADOOP-7249. Refactor the chmod/chown/chgrp command to conform to new + FsCommand class. (Daryn Sharp via szetszwo) + + HADOOP-7251. Refactor the getmerge command to conform to new FsCommand + class. (Daryn Sharp via szetszwo) + + HADOOP-7265. Keep track of relative paths in PathData. (Daryn Sharp + via szetszwo) + + HADOOP-7238. Refactor the cat and text commands to conform to new FsCommand + class. (Daryn Sharp via szetszwo) + + HADOOP-7271. Standardize shell command error messages. (Daryn Sharp + via szetszwo) + + HADOOP-7272. Remove unnecessary security related info logs. (suresh) + + HADOOP-7275. Refactor the stat command to conform to new FsCommand + class. (Daryn Sharp via szetszwo) + + HADOOP-7237. Refactor the touchz command to conform to new FsCommand + class. (Daryn Sharp via szetszwo) + + HADOOP-7267. Refactor the rm/rmr/expunge commands to conform to new + FsCommand class. (Daryn Sharp via szetszwo) + + HADOOP-7285. Refactor the test command to conform to new FsCommand + class. (Daryn Sharp via todd) + + HADOOP-7289. In ivy.xml, test conf should not extend common conf. + (Eric Yang via szetszwo) + + HADOOP-7291. Update Hudson job not to run test-contrib. (Nigel Daley via eli) + + HADOOP-7286. Refactor the du/dus/df commands to conform to new FsCommand + class. (Daryn Sharp via todd) + + HADOOP-7301. FSDataInputStream should expose a getWrappedStream method. + (Jonathan Hsieh via eli) + + HADOOP-7306. Start metrics system even if config files are missing + (Luke Lu via todd) + + HADOOP-7302. webinterface.private.actions should be renamed and moved to + the MapReduce project. (Ari Rabkin via todd) + + HADOOP-7329. Improve help message for "df" to include "-h" flag. + (Xie Xianshan via todd) + + HADOOP-7320. Refactor the copy and move commands to conform to new + FsCommand class. (Daryn Sharp via todd) + + HADOOP-7312. Update value of hadoop.common.configuration.version. + (Harsh J Chouraria via todd) + + HADOOP-7337. Change PureJavaCrc32 annotations to public stable. (szetszwo) + + HADOOP-7331. Make hadoop-daemon.sh return exit code 1 if daemon processes + did not get started. (Tanping Wang via todd) + + HADOOP-7316. Add public javadocs to FSDataInputStream and + FSDataOutputStream. (eli) + + HADOOP-7323. Add capability to resolve compression codec based on codec + name. (Alejandro Abdelnur via tomwhite) + + HADOOP-1886. Undocumented parameters in FilesSystem. (Frank Conrad via eli) + + HADOOP-7375. Add resolvePath method to FileContext. (Sanjay Radia via eli) + + HADOOP-7383. HDFS needs to export protobuf library dependency in pom. + (todd via eli) + + HADOOP-7374. Don't add tools.jar to the classpath when running Hadoop. + (eli) + + HADOOP-7106. Reorganize project SVN layout to "unsplit" the projects. + (todd, nigel) + + HADOOP-6605. Add JAVA_HOME detection to hadoop-config. (eli) + + HADOOP-7384. Allow test-patch to be more flexible about patch format. (todd) + + HADOOP-6929. RPC should have a way to pass Security information other than + protocol annotations. (sharad and omalley via mahadev) + + HADOOP-7385. Remove StringUtils.stringifyException(ie) in logger functions. + (Bharath Mundlapudi via Tanping Wang). + + HADOOP-310. Additional constructor requested in BytesWritable. (Brock + Noland via atm) + + HADOOP-7429. Add another IOUtils#copyBytes method. (eli) + + HADOOP-7451. Generalize StringUtils#join. (Chris Douglas via mattf) + + HADOOP-7449. Add Data(In,Out)putByteBuffer to work with ByteBuffer similar + to Data(In,Out)putBuffer for byte[]. Merge from yahoo-merge branch, + -r 1079163. Fix missing Apache license headers. (Chris Douglas via mattf) + + HADOOP-7361. Provide an option, -overwrite/-f, in put and copyFromLocal + shell commands. (Uma Maheswara Rao G via szetszwo) + + HADOOP-7430. Improve error message when moving to trash fails due to + quota issue. (Ravi Prakash via mattf) + + HADOOP-7444. Add Checksum API to verify and calculate checksums "in bulk" + (todd) + + HADOOP-7443. Add CRC32C as another DataChecksum implementation (todd) + + HADOOP-7305. Eclipse project files are incomplete. (Niels Basjes via eli) + + HADOOP-7314. Add support for throwing UnknownHostException when a host doesn't + resolve. (Jeffrey Naisbitt via jitendra) + + HADOOP-7465. A several tiny improvements for the LOG format. + (Xie Xianshan via eli) + + HADOOP-7434. Display error when using "daemonlog -setlevel" with + illegal level. (yanjinshuang via eli) + + HADOOP-7463. Adding a configuration parameter to SecurityInfo interface. + (mahadev) + + HADOOP-7298. Add test utility for writing multi-threaded tests. (todd and + Harsh J Chouraria via todd) + + HADOOP-7485. Add -h option to ls to list file sizes in human readable + format. (XieXianshan via suresh) + + HADOOP-7378. Add -d option to ls to not expand directories. + (Daryn Sharp via suresh) + + HADOOP-7474. Refactor ClientCache out of WritableRpcEngine. (jitendra) + + HADOOP-7491. hadoop command should respect HADOOP_OPTS when given + a class name. (eli) + + HADOOP-7178. Add a parameter, useRawLocalFileSystem, to copyToLocalFile(..) + in FileSystem. (Uma Maheswara Rao G via szetszwo) + + HADOOP-6671. Use maven for hadoop common builds. (Alejandro Abdelnur + via tomwhite) + + HADOOP-7502. Make generated sources IDE friendly. + (Alejandro Abdelnur via llu) + + HADOOP-7501. Publish Hadoop Common artifacts (post HADOOP-6671) to Apache + SNAPSHOTs repo. (Alejandro Abdelnur via tomwhite) + + HADOOP-7525. Make arguments to test-patch optional. (tomwhite) + + HADOOP-7472. RPC client should deal with IP address change. + (Kihwal Lee via suresh) + + HADOOP-7499. Add method for doing a sanity check on hostnames in NetUtils. + (Jeffrey Naisbit via mahadev) + + HADOOP-6158. Move CyclicIteration to HDFS. (eli) + + HADOOP-7526. Add TestPath tests for URI conversion and reserved + characters. (eli) + + HADOOP-7531. Add servlet util methods for handling paths in requests. (eli) + + HADOOP-7493. Add ShortWritable. (Uma Maheswara Rao G via szetszwo) + + HADOOP-7555. Add a eclipse-generated files to .gitignore. (atm) + + HADOOP-7264. Bump avro version to at least 1.4.1. (Alejandro Abdelnur via + tomwhite) + + HADOOP-7498. Remove legacy TAR layout creation. (Alejandro Abdelnur via + tomwhite) + + HADOOP-7496. Break Maven TAR & bintar profiles into just LAYOUT & TAR proper. + (Alejandro Abdelnur via tomwhite) + + HADOOP-7561. Make test-patch only run tests for changed modules. (tomwhite) + + HADOOP-7547. Add generic type in WritableComparable subclasses. + (Uma Maheswara Rao G via szetszwo) + + HADOOP-7579. Rename package names from alfredo to auth. + (Alejandro Abdelnur via szetszwo) + + HADOOP-7594. Support HTTP REST in HttpServer. (szetszwo) + + HADOOP-7552. FileUtil#fullyDelete doesn't throw IOE but lists it + in the throws clause. (eli) + + HADOOP-7580. Add a version of getLocalPathForWrite to LocalDirAllocator + which doesn't create dirs. (Chris Douglas & Siddharth Seth via acmurthy) + + HADOOP-7507. Allow ganglia metrics to include the metrics system tags + in the gmetric names. (Alejandro Abdelnur via todd) + + HADOOP-7612. Change test-patch to run tests for all nested modules. + (tomwhite) + + HADOOP-7599. Script improvements to setup a secure Hadoop cluster + (Eric Yang via ddas) + + HADOOP-7639. Enhance HttpServer to allow passing path-specs for filtering, + so that servers like Yarn WebApp can get filtered the paths served by + their own injected servlets. (Thomas Graves via vinodkv) + + HADOOP-7575. Enhanced LocalDirAllocator to support fully-qualified + paths. (Jonathan Eagles via vinodkv) + + HADOOP-7469 Add a standard handler for socket connection problems which + improves diagnostics (Uma Maheswara Rao G and stevel via stevel) + + HADOOP-7710. Added hadoop-setup-application.sh for creating + application directory (Arpit Gupta via Eric Yang) + + HADOOP-7707. Added toggle for dfs.support.append, webhdfs and hadoop proxy + user to setup config script. (Arpit Gupta via Eric Yang) + + HADOOP-7720. Added parameter for HBase user to setup config script. + (Arpit Gupta via Eric Yang) + + HADOOP-7624. Set things up for a top level hadoop-tools module. (tucu) + + HADOOP-7627. Improve MetricsAsserts to give more understandable output + on failure. (todd) + + HADOOP-7642. create hadoop-dist module where TAR stitching would happen. + (Thomas White via tucu) + + HADOOP-7709. Running a set of methods in a Single Test Class. + (Jonathan Eagles via mahadev) + + HADOOP-7705. Add a log4j back end that can push out JSON data, + one per line. (stevel) + + HADOOP-7749. Add a NetUtils createSocketAddr call which provides more + help in exception messages. (todd) + + HADOOP-7762. Common side of MR-2736. (eli) + + HADOOP-7668. Add a NetUtils method that can tell if an InetAddress + belongs to local host. (suresh) + + HADOOP-7509. Improve exception message thrown when Authentication is + required. (Ravi Prakash via suresh) + + HADOOP-7745. Fix wrong variable name in exception message introduced + in HADOOP-7509. (Ravi Prakash via suresh) + + MAPREDUCE-2764. Fix renewal of dfs delegation tokens. (Owen via jitendra) + + HADOOP-7360. Preserve relative paths that do not contain globs in FsShell. + (Daryn Sharp and Kihwal Lee via szetszwo) + + HADOOP-7771. FsShell -copyToLocal, -get, etc. commands throw NPE if the + destination directory does not exist. (John George and Daryn Sharp + via szetszwo) + + HADOOP-7782. Aggregate project javadocs. (tomwhite) + + HADOOP-7789. Improvements to site navigation. (acmurthy) + + OPTIMIZATIONS + + HADOOP-7333. Performance improvement in PureJavaCrc32. (Eric Caspole + via todd) + + HADOOP-7445. Implement bulk checksum verification using efficient native + code. (todd) + + HADOOP-7753. Support fadvise and sync_file_range in NativeIO. Add + ReadaheadPool infrastructure for use in HDFS and MR. (todd) + + HADOOP-7446. Implement CRC32C native code using SSE4.2 instructions. + (Kihwal Lee and todd via todd) + + HADOOP-7763. Add top-level navigation to APT docs. (tomwhite) + + HADOOP-7785. Add equals, hashcode, toString to DataChecksum (todd) + + BUG FIXES + + HADOOP-7740. Fixed security audit logger configuration. (Arpit Gupta via Eric Yang) + + HADOOP-7630. hadoop-metrics2.properties should have a property *.period + set to a default value for metrics. (Eric Yang via mattf) + + HADOOP-7327. FileSystem.listStatus() throws NullPointerException instead of + IOException upon access permission failure. (mattf) + + HADOOP-7015. RawLocalFileSystem#listStatus does not deal with a directory + whose entries are changing (e.g. in a multi-thread or multi-process + environment). (Sanjay Radia via eli) + + HADOOP-7045. TestDU fails on systems with local file systems with + extended attributes. (eli) + + HADOOP-6939. Inconsistent lock ordering in + AbstractDelegationTokenSecretManager. (Todd Lipcon via tomwhite) + + HADOOP-7129. Fix typo in method name getProtocolSigature (todd) + + HADOOP-7048. Wrong description of Block-Compressed SequenceFile Format in + SequenceFile's javadoc. (Jingguo Yao via tomwhite) + + HADOOP-7153. MapWritable violates contract of Map interface for equals() + and hashCode(). (Nicholas Telford via todd) + + HADOOP-6754. DefaultCodec.createOutputStream() leaks memory. + (Aaron Kimball via tomwhite) + + HADOOP-7098. Tasktracker property not set in conf/hadoop-env.sh. + (Bernd Fondermann via tomwhite) + + HADOOP-7131. Exceptions thrown by Text methods should include the causing + exception. (Uma Maheswara Rao G via todd) + + HADOOP-6912. Guard against NPE when calling UGI.isLoginKeytabBased(). + (Kan Zhang via jitendra) + + HADOOP-7204. remove local unused fs variable from CmdHandler + and FsShellPermissions.changePermissions (boryas) + + HADOOP-7210. Chown command is not working from FSShell + (Uma Maheswara Rao G via todd) + + HADOOP-7215. RPC clients must use network interface corresponding to + the host in the client's kerberos principal key. (suresh) + + HADOOP-7019. Refactor build targets to enable faster cross project dev + cycles. (Luke Lu via cos) + + HADOOP-7216. Add FsCommand.runAll() with deprecated annotation for the + transition of Command base class improvement. (Daryn Sharp via szetszwo) + + HADOOP-7207. fs member of FSShell is not really needed (boryas) + + HADOOP-7223. FileContext createFlag combinations are not clearly defined. + (suresh) + + HADOOP-7231. Fix synopsis for -count. (Daryn Sharp via eli). + + HADOOP-7261. Disable IPV6 for junit tests. (suresh) + + HADOOP-7268. FileContext.getLocalFSFileContext() behavior needs to be fixed + w.r.t tokens. (jitendra) + + HADOOP-7290. Unit test failure in + TestUserGroupInformation.testGetServerSideGroups. (Trevor Robison via eli) + + HADOOP-7292. Fix racy test case TestSinkQueue. (Luke Lu via todd) + + HADOOP-7282. ipc.Server.getRemoteIp() may return null. (John George + via szetszwo) + + HADOOP-7208. Fix implementation of equals() and hashCode() in + StandardSocketFactory. (Uma Maheswara Rao G via todd) + + HADOOP-7336. TestFileContextResolveAfs will fail with default + test.build.data property. (jitendra) + + HADOOP-7284 Trash and shell's rm does not work for viewfs (Sanjay Radia) + + HADOOP-7341. Fix options parsing in CommandFormat (Daryn Sharp via todd) + + HADOOP-7353. Cleanup FsShell and prevent masking of RTE stack traces. + (Daryn Sharp via todd) + + HADOOP-7356. RPM packages broke bin/hadoop script in developer environment. + (Eric Yang via todd) + + HADOOP-7389. Use of TestingGroups by tests causes subsequent tests to fail. + (atm via tomwhite) + + HADOOP-7377. Fix command name handling affecting DFSAdmin. (Daryn Sharp + via mattf) + + HADOOP-7402. TestConfiguration doesn't clean up after itself. (atm via eli) + + HADOOP-7428. IPC connection is orphaned with null 'out' member. + (todd via eli) + + HADOOP-7437. IOUtils.copybytes will suppress the stream closure exceptions. + (Uma Maheswara Rao G via szetszwo) + + HADOOP-7090. Fix resource leaks in s3.INode, BloomMapFile, WritableUtils + and CBZip2OutputStream. (Uma Maheswara Rao G via szetszwo) + + HADOOP-7440. HttpServer.getParameterValues throws NPE for missing + parameters. (Uma Maheswara Rao G and todd via todd) + + HADOOP-7442. Docs in core-default.xml still reference deprecated config + "topology.script.file.name" (atm) + + HADOOP-7419. new hadoop-config.sh doesn't manage classpath for + HADOOP_CONF_DIR correctly. (Bing Zheng and todd via todd) + + HADOOP-7448. merge from yahoo-merge branch (via mattf): + -r 1079157: Fix content type for /stacks servlet to be + plain text (Luke Lu) + -r 1079164: No need to escape plain text (Luke Lu) + + HADOOP-7471. The saveVersion.sh script sometimes fails to extract SVN URL. + (Alejandro Abdelnur via eli) + + HADOOP-2081. Configuration getInt, getLong, and getFloat replace + invalid numbers with the default value. (Harsh J via eli) + + HADOOP-7111. Several TFile tests failing when native libraries are + present. (atm) + + HADOOP-7438. Fix deprecated warnings from hadoop-daemon.sh script. + (Ravi Prakash via suresh) + + HADOOP-7468 hadoop-core JAR contains a log4j.properties file. + (Jolly Chen) + + HADOOP-7508. Compiled nativelib is in wrong directory and it is not picked + up by surefire setup. (Alejandro Abdelnur via tomwhite) + + HADOOP-7520. Fix to add distribution management info to hadoop-main + (Alejandro Abdelnur via gkesavan) + + HADOOP-7515. test-patch reports the wrong number of javadoc warnings. + (tomwhite) + + HADOOP-7523. Test org.apache.hadoop.fs.TestFilterFileSystem fails due to + java.lang.NoSuchMethodException. (John Lee via tomwhite) + + HADOOP-7528. Maven build fails in Windows. (Alejandro Abdelnur via + tomwhite) + + HADOOP-7533. Allow test-patch to be run from any subproject directory. + (tomwhite) + + HADOOP-7512. Fix example mistake in WritableComparable javadocs. + (Harsh J via eli) + + HADOOP-7357. hadoop.io.compress.TestCodec#main() should exit with + non-zero exit code if test failed. (Philip Zeyliger via eli) + + HADOOP-6622. Token should not print the password in toString. (eli) + + HADOOP-7529. Fix lock cycles in metrics system. (llu) + + HADOOP-7545. Common -tests JAR should not include properties and configs. + (todd) + + HADOOP-7536. Correct the dependency version regressions introduced in + HADOOP-6671. (Alejandro Abdelnur via tomwhite) + + HADOOP-7566. MR tests are failing webapps/hdfs not found in CLASSPATH. + (Alejandro Abdelnur via mahadev) + + HADOOP-7567. 'mvn eclipse:eclipse' fails for hadoop-alfredo (auth). + (Alejandro Abdelnur via tomwhite) + + HADOOP-7563. Setup HADOOP_HDFS_HOME, HADOOP_MAPRED_HOME and classpath + correction. (Eric Yang via acmurthy) + + HADOOP-7560. Change src layout to be heirarchical. (Alejandro Abdelnur + via acmurthy) + + HADOOP-7576. Fix findbugs warnings and javac warnings in hadoop-auth. + (szetszwo) + + HADOOP-7593. Fix AssertionError in TestHttpServer.testMaxThreads(). + (Uma Maheswara Rao G via szetszwo) + + HADOOP-7598. Fix smart-apply-patch.sh to handle patching from a sub + directory correctly. (Robert Evans via acmurthy) + + HADOOP-7328. When a serializer class is missing, return null, not throw + an NPE. (Harsh J Chouraria via todd) + + HADOOP-7626. Bugfix for a config generator (Eric Yang via ddas) + + HADOOP-7629. Allow immutable FsPermission objects to be used as IPC + parameters. (todd) + + HADOOP-7608. SnappyCodec check for Hadoop native lib is wrong + (Alejandro Abdelnur via todd) + + HADOOP-7637. Fix to include FairScheduler configuration file in + RPM. (Eric Yang via ddas) + + HADOOP-7633. Adds log4j.properties to the hadoop-conf dir on + deploy (Eric Yang via ddas) + + HADOOP-7631. Fixes a config problem to do with running streaming jobs + (Eric Yang via ddas) + + HADOOP-7662. Fixed logs servlet to use the pathspec '/*' instead of '/' + for correct filtering. (Thomas Graves via vinodkv) + + HADOOP-7691. Fixed conflict uid for install packages. (Eric Yang) + + HADOOP-7603. Set hdfs, mapred uid, and hadoop uid to fixed numbers. + (Eric Yang) + + HADOOP-7658. Fixed HADOOP_SECURE_DN_USER environment variable in + hadoop-evn.sh (Eric Yang) + + HADOOP-7684. Added init.d script for jobhistory server and + secondary namenode. (Eric Yang) + + HADOOP-7715. Removed unnecessary security logger configuration. (Eric Yang) + + HADOOP-7685. Improved directory ownership check function in + hadoop-setup-conf.sh. (Eric Yang) + + HADOOP-7711. Fixed recursive sourcing of HADOOP_OPTS environment + variables (Arpit Gupta via Eric Yang) + + HADOOP-7681. Fixed security and hdfs audit log4j properties + (Arpit Gupta via Eric Yang) + + HADOOP-7708. Fixed hadoop-setup-conf.sh to handle config files + consistently. (Eric Yang) + + HADOOP-7724. Fixed hadoop-setup-conf.sh to put proxy user in + core-site.xml. (Arpit Gupta via Eric Yang) + + HADOOP-7755. Detect MapReduce PreCommit Trunk builds silently failing + when running test-patch.sh. (Jonathan Eagles via tomwhite) + + HADOOP-7744. Ensure failed tests exit with proper error code. (Jonathan + Eagles via acmurthy) + + HADOOP-7764. Allow HttpServer to set both ACL list and path spec filters. + (Jonathan Eagles via acmurthy) + + HADOOP-7766. The auth to local mappings are not being respected, with webhdfs + and security enabled. (jitendra) + + HADOOP-7721. Add log before login in KerberosAuthenticationHandler. + (jitendra) + + HADOOP-7778. FindBugs warning in Token.getKind(). (tomwhite) + + HADOOP-7798. Add support gpg signatures for maven release artifacts. + (cutting via acmurthy) + + HADOOP-7797. Fix top-level pom.xml to refer to correct staging maven + repository. (omalley via acmurthy) + + HADOOP-7101. UserGroupInformation.getCurrentUser() fails when called from + non-Hadoop JAAS context. (todd) + +Release 0.22.1 - Unreleased + + INCOMPATIBLE CHANGES + + NEW FEATURES + + IMPROVEMENTS + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-7937. Forward port SequenceFile#syncFs and friends from Hadoop 1.x. + (tomwhite) + +Release 0.22.0 - 2011-11-29 + + INCOMPATIBLE CHANGES + + HADOOP-7137. Remove hod contrib. (nigel via eli) + + NEW FEATURES + + HADOOP-6791. Refresh for proxy superuser config + (common part for HDFS-1096) (boryas) + + HADOOP-6581. Add authenticated TokenIdentifiers to UGI so that + they can be used for authorization (Kan Zhang and Jitendra Pandey + via jghoman) + + HADOOP-6584. Provide Kerberized SSL encryption for webservices. + (jghoman and Kan Zhang via jghoman) + + HADOOP-6853. Common component of HDFS-1045. (jghoman) + + HADOOP-6859 - Introduce additional statistics to FileSystem to track + file system operations (suresh) + + HADOOP-6870. Add a new API getFiles to FileSystem and FileContext that + lists all files under the input path or the subtree rooted at the + input path if recursive is true. Block locations are returned together + with each file's status. (hairong) + + HADOOP-6888. Add a new FileSystem API closeAllForUGI(..) for closing all + file systems associated with a particular UGI. (Devaraj Das and Kan Zhang + via szetszwo) + + HADOOP-6892. Common component of HDFS-1150 (Verify datanodes' identities + to clients in secure clusters) (jghoman) + + HADOOP-6889. Make RPC to have an option to timeout. (hairong) + + HADOOP-6996. Allow CodecFactory to return a codec object given a codec' + class name. (hairong) + + HADOOP-7013. Add boolean field isCorrupt to BlockLocation. + (Patrick Kling via hairong) + + HADOOP-6978. Adds support for NativeIO using JNI. + (Todd Lipcon, Devaraj Das & Owen O'Malley via ddas) + + HADOOP-7134. configure files that are generated as part of the released + tarball need to have executable bit set. (Roman Shaposhnik via cos) + + IMPROVEMENTS + + HADOOP-6644. util.Shell getGROUPS_FOR_USER_COMMAND method name + - should use common naming convention (boryas) + + HADOOP-6778. add isRunning() method to + AbstractDelegationTokenSecretManager (for HDFS-1044) (boryas) + + HADOOP-6633. normalize property names for JT/NN kerberos principal + names in configuration (boryas) + + HADOOP-6627. "Bad Connection to FS" message in FSShell should print + message from the exception (boryas) + + HADOOP-6600. mechanism for authorization check for inter-server + protocols. (boryas) + + HADOOP-6623. Add StringUtils.split for non-escaped single-character + separator. (Todd Lipcon via tomwhite) + + HADOOP-6761. The Trash Emptier has the ability to run more frequently. + (Dmytro Molkov via dhruba) + + HADOOP-6714. Resolve compressed files using CodecFactory in FsShell::text. + (Patrick Angeles via cdouglas) + + HADOOP-6661. User document for UserGroupInformation.doAs. + (Jitendra Pandey via jghoman) + + HADOOP-6674. Makes use of the SASL authentication options in the + SASL RPC. (Jitendra Pandey via ddas) + + HADOOP-6526. Need mapping from long principal names to local OS + user names. (boryas) + + HADOOP-6814. Adds an API in UserGroupInformation to get the real + authentication method of a passed UGI. (Jitendra Pandey via ddas) + + HADOOP-6756. Documentation for common configuration keys. + (Erik Steffl via shv) + + HADOOP-6835. Add support for concatenated gzip input. (Greg Roelofs via + cdouglas) + + HADOOP-6845. Renames the TokenStorage class to Credentials. + (Jitendra Pandey via ddas) + + HADOOP-6826. FileStatus needs unit tests. (Rodrigo Schmidt via Eli + Collins) + + HADOOP-6905. add buildDTServiceName method to SecurityUtil + (as part of MAPREDUCE-1718) (boryas) + + HADOOP-6632. Adds support for using different keytabs for different + servers in a Hadoop cluster. In the earier implementation, all servers + of a certain type (like TaskTracker), would have the same keytab and the + same principal. Now the principal name is a pattern that has _HOST in it. + (Kan Zhang & Jitendra Pandey via ddas) + + HADOOP-6861. Adds new non-static methods in Credentials to read and + write token storage file. (Jitendra Pandey & Owen O'Malley via ddas) + + HADOOP-6877. Common part of HDFS-1178 (NameNode servlets should communicate + with NameNode directrly). (Kan Zhang via jghoman) + + HADOOP-6475. Adding some javadoc to Server.RpcMetrics, UGI. + (Jitendra Pandey and borya via jghoman) + + HADOOP-6656. Adds a thread in the UserGroupInformation to renew TGTs + periodically. (Owen O'Malley and ddas via ddas) + + HADOOP-6890. Improve listFiles API introduced by HADOOP-6870. (hairong) + + HADOOP-6862. Adds api to add/remove user and group to AccessControlList + (amareshwari) + + HADOOP-6911. doc update for DelegationTokenFetcher (boryas) + + HADOOP-6900. Make the iterator returned by FileSystem#listLocatedStatus to + throw IOException rather than RuntimeException when there is an IO error + fetching the next file. (hairong) + + HADOOP-6905. Better logging messages when a delegation token is invalid. + (Kan Zhang via jghoman) + + HADOOP-6693. Add metrics to track kerberol login activity. (suresh) + + HADOOP-6803. Add native gzip read/write coverage to TestCodec. + (Eli Collins via tomwhite) + + HADOOP-6950. Suggest that HADOOP_CLASSPATH should be preserved in + hadoop-env.sh.template. (Philip Zeyliger via Eli Collins) + + HADOOP-6922. Make AccessControlList a writable and update documentation + for Job ACLs. (Ravi Gummadi via vinodkv) + + HADOOP-6965. Introduces checks for whether the original tgt is valid + in the reloginFromKeytab method. + + HADOOP-6856. Simplify constructors for SequenceFile, and MapFile. (omalley) + + HADOOP-6987. Use JUnit Rule to optionally fail test cases that run more + than 10 seconds (jghoman) + + HADOOP-7005. Update test-patch.sh to remove callback to Hudson. (nigel) + + HADOOP-6985. Suggest that HADOOP_OPTS be preserved in + hadoop-env.sh.template. (Ramkumar Vadali via cutting) + + HADOOP-7007. Update the hudson-test-patch ant target to work with the + latest test-patch.sh script (gkesavan) + + HADOOP-7010. Typo in FileSystem.java. (Jingguo Yao via eli) + + HADOOP-7009. MD5Hash provides a public factory method that creates an + instance of thread local MessageDigest. (hairong) + + HADOOP-7008. Enable test-patch.sh to have a configured number of + acceptable findbugs and javadoc warnings. (nigel and gkesavan) + + HADOOP-6818. Provides a JNI implementation of group resolution. (ddas) + + HADOOP-6943. The GroupMappingServiceProvider interface should be public. + (Aaron T. Myers via tomwhite) + + HADOOP-4675. Current Ganglia metrics implementation is incompatible with + Ganglia 3.1. (Brian Bockelman via tomwhite) + + HADOOP-6977. Herriot daemon clients should vend statistics (cos) + + HADOOP-7024. Create a test method for adding file systems during tests. + (Kan Zhang via jghoman) + + HADOOP-6903. Make AbstractFSileSystem methods and some FileContext methods + to be public. (Sanjay Radia) + + HADOOP-7034. Add TestPath tests to cover dot, dot dot, and slash + normalization. (eli) + + HADOOP-7032. Assert type constraints in the FileStatus constructor. (eli) + + HADOOP-6562. FileContextSymlinkBaseTest should use FileContextTestHelper. + (eli) + + HADOOP-7028. ant eclipse does not include requisite ant.jar in the + classpath. (Patrick Angeles via eli) + + HADOOP-6298. Add copyBytes to Text and BytesWritable. (omalley) + + HADOOP-6578. Configuration should trim whitespace around a lot of value + types. (Michele Catasta via eli) + + HADOOP-6811. Remove EC2 bash scripts. They are replaced by Apache Whirr + (incubating, http://incubator.apache.org/whirr). (tomwhite) + + HADOOP-7102. Remove "fs.ramfs.impl" field from core-deafult.xml (shv) + + HADOOP-7104. Remove unnecessary DNS reverse lookups from RPC layer + (Kan Zhang via todd) + + HADOOP-6056. Use java.net.preferIPv4Stack to force IPv4. + (Michele Catasta via shv) + + HADOOP-7110. Implement chmod with JNI. (todd) + + HADOOP-6812. Change documentation for correct placement of configuration + variables: mapreduce.reduce.input.buffer.percent, + mapreduce.task.io.sort.factor, mapreduce.task.io.sort.mb + (Chris Douglas via shv) + + HADOOP-6436. Remove auto-generated native build files. (rvs via eli) + + HADOOP-6970. SecurityAuth.audit should be generated under /build. (boryas) + + HADOOP-7154. Should set MALLOC_ARENA_MAX in hadoop-env.sh (todd) + + HADOOP-7187. Fix socket leak in GangliaContext. (Uma Maheswara Rao G + via szetszwo) + + HADOOP-7241. fix typo of command 'hadoop fs -help tail'. + (Wei Yongjun via eli) + + HADOOP-7244. Documentation change for updated configuration keys. + (tomwhite via eli) + + HADOOP-7189. Add ability to enable 'debug' property in JAAS configuration. + (Ted Yu via todd) + + HADOOP-7192. Update fs -stat docs to reflect the format features. (Harsh + J Chouraria via todd) + + HADOOP-7355 Add audience and stability annotations to HttpServer class + (stack) + + HADOOP-7346. Send back nicer error message to clients using outdated IPC + version. (todd) + + HADOOP-7335. Force entropy to come from non-true random for tests. + (todd via eli) + + HADOOP-7325. The hadoop command should not accept class names starting with + a hyphen. (Brock Noland via todd) + + HADOOP-7772. javadoc the topology classes (stevel) + + HADOOP-7786. Remove HDFS-specific config keys defined in FsConfig. (eli) + + HADOOP-7861. changes2html.pl generates links to HADOOP, HDFS, and MAPREDUCE + jiras. (shv) + + OPTIMIZATIONS + + HADOOP-6884. Add LOG.isDebugEnabled() guard for each LOG.debug(..). + (Erik Steffl via szetszwo) + + HADOOP-6683. ZlibCompressor does not fully utilize the buffer. + (Kang Xiao via eli) + + HADOOP-6949. Reduce RPC packet size of primitive arrays using + ArrayPrimitiveWritable instead of ObjectWritable. (Matt Foley via suresh) + + BUG FIXES + + HADOOP-6638. try to relogin in a case of failed RPC connection (expired + tgt) only in case the subject is loginUser or proxyUgi.realUser. (boryas) + + HADOOP-6781. security audit log shouldn't have exception in it. (boryas) + + HADOOP-6612. Protocols RefreshUserToGroupMappingsProtocol and + RefreshAuthorizationPolicyProtocol will fail with security enabled (boryas) + + HADOOP-6764. Remove verbose logging from the Groups class. (Boris Shkolnik) + + HADOOP-6730. Bug in FileContext#copy and provide base class for + FileContext tests. (Ravi Phulari via jghoman) + + HADOOP-6669. Respect compression configuration when creating DefaultCodec + instances. (Koji Noguchi via cdouglas) + + HADOOP-6747. TestNetUtils fails on Mac OS X. (Todd Lipcon via jghoman) + + HADOOP-6787. Factor out glob pattern code from FileContext and + Filesystem. Also fix bugs identified in HADOOP-6618 and make the + glob pattern code less restrictive and more POSIX standard + compliant. (Luke Lu via eli) + + HADOOP-6649. login object in UGI should be inside the subject (jnp via + boryas) + + HADOOP-6687. user object in the subject in UGI should be reused in case + of a relogin. (jnp via boryas) + + HADOOP-6603. Provide workaround for issue with Kerberos not resolving + cross-realm principal (Kan Zhang and Jitendra Pandey via jghoman) + + HADOOP-6620. NPE if renewer is passed as null in getDelegationToken. + (Jitendra Pandey via jghoman) + + HADOOP-6613. Moves the RPC version check ahead of the AuthMethod check. + (Kan Zhang via ddas) + + HADOOP-6682. NetUtils:normalizeHostName does not process hostnames starting + with [a-f] correctly. (jghoman) + + HADOOP-6652. Removes the unnecessary cache from + ShellBasedUnixGroupsMapping. (ddas) + + HADOOP-6815. refreshSuperUserGroupsConfiguration should use server side + configuration for the refresh (boryas) + + HADOOP-6648. Adds a check for null tokens in Credentials.addToken api. + (ddas) + + HADOOP-6647. balancer fails with "is not authorized for protocol + interface NamenodeProtocol" in secure environment (boryas) + + HADOOP-6834. TFile.append compares initial key against null lastKey + (hong tang via mahadev) + + HADOOP-6670. Use the UserGroupInformation's Subject as the criteria for + equals and hashCode. (Owen O'Malley and Kan Zhang via ddas) + + HADOOP-6536. Fixes FileUtil.fullyDelete() not to delete the contents of + the sym-linked directory. (Ravi Gummadi via amareshwari) + + HADOOP-6873. using delegation token over hftp for long + running clients (boryas) + + HADOOP-6706. Improves the sasl failure handling due to expired tickets, + and other server detected failures. (Jitendra Pandey and ddas via ddas) + + HADOOP-6715. Fixes AccessControlList.toString() to return a descriptive + String representation of the ACL. (Ravi Gummadi via amareshwari) + + HADOOP-6885. Fix java doc warnings in Groups and + RefreshUserMappingsProtocol. (Eli Collins via jghoman) + + HADOOP-6482. GenericOptionsParser constructor that takes Options and + String[] ignores options. (Eli Collins via jghoman) + + HADOOP-6906. FileContext copy() utility doesn't work with recursive + copying of directories. (vinod k v via mahadev) + + HADOOP-6453. Hadoop wrapper script shouldn't ignore an existing + JAVA_LIBRARY_PATH. (Chad Metcalf via jghoman) + + HADOOP-6932. Namenode start (init) fails because of invalid kerberos + key, even when security set to "simple" (boryas) + + HADOOP-6913. Circular initialization between UserGroupInformation and + KerberosName (Kan Zhang via boryas) + + HADOOP-6907. Rpc client doesn't use the per-connection conf to figure + out server's Kerberos principal (Kan Zhang via hairong) + + HADOOP-6938. ConnectionId.getRemotePrincipal() should check if security + is enabled. (Kan Zhang via hairong) + + HADOOP-6930. AvroRpcEngine doesn't work with generated Avro code. + (sharad) + + HADOOP-6940. RawLocalFileSystem's markSupported method misnamed + markSupport. (Tom White via eli). + + HADOOP-6951. Distinct minicluster services (e.g. NN and JT) overwrite each + other's service policies. (Aaron T. Myers via tomwhite) + + HADOOP-6879. Provide SSH based (Jsch) remote execution API for system + tests (cos) + + HADOOP-6989. Correct the parameter for SetFile to set the value type + for SetFile to be NullWritable instead of the key. (cdouglas via omalley) + + HADOOP-6984. Combine the compress kind and the codec in the same option + for SequenceFiles. (cdouglas via omalley) + + HADOOP-6933. TestListFiles is flaky. (Todd Lipcon via tomwhite) + + HADOOP-6947. Kerberos relogin should set refreshKrb5Config to true. + (Todd Lipcon via tomwhite) + + HADOOP-7006. Fix 'fs -getmerge' command to not be a no-op. + (Chris Nauroth via cutting) + + HADOOP-6663. BlockDecompressorStream get EOF exception when decompressing + the file compressed from empty file. (Kang Xiao via tomwhite) + + HADOOP-6991. Fix SequenceFile::Reader to honor file lengths and call + openFile (cdouglas via omalley) + + HADOOP-7011. Fix KerberosName.main() to not throw an NPE. + (Aaron T. Myers via tomwhite) + + HADOOP-6975. Integer overflow in S3InputStream for blocks > 2GB. + (Patrick Kling via tomwhite) + + HADOOP-6758. MapFile.fix does not allow index interval definition. + (Gianmarco De Francisci Morales via tomwhite) + + HADOOP-6926. SocketInputStream incorrectly implements read(). + (Todd Lipcon via tomwhite) + + HADOOP-6899 RawLocalFileSystem#setWorkingDir() does not work for relative names + (Sanjay Radia) + + HADOOP-6496. HttpServer sends wrong content-type for CSS files + (and others). (Todd Lipcon via tomwhite) + + HADOOP-7057. IOUtils.readFully and IOUtils.skipFully have typo in + exception creation's message. (cos) + + HADOOP-7038. saveVersion script includes an additional \r while running + whoami under windows. (Wang Xu via cos) + + HADOOP-7082. Configuration.writeXML should not hold lock while outputting + (todd) + + HADOOP-7070. JAAS configuration should delegate unknown application names + to pre-existing configuration. (todd) + + HADOOP-7087. SequenceFile.createWriter ignores FileSystem parameter (todd) + + HADOOP-7091. reloginFromKeytab() should happen even if TGT can't be found. + (Kan Zhang via jghoman) + + HADOOP-7100. Fix build to not refer to contrib/ec2 removed by HADOOP-6811 + (todd) + + HADOOP-7097. JAVA_LIBRARY_PATH missing base directory. (Noah Watkins via + todd) + + HADOOP-7093. Servlets should default to text/plain (todd) + + HADOOP-7089. Fix link resolution logic in hadoop-config.sh. (eli) + + HADOOP-7046. Fix Findbugs warning in Configuration. (Po Cheung via shv) + + HADOOP-7118. Fix NPE in Configuration.writeXml (todd) + + HADOOP-7122. Fix thread leak when shell commands time out. (todd) + + HADOOP-7126. Fix file permission setting for RawLocalFileSystem on Windows. + (Po Cheung via shv) + + HADOOP-6642. Fix javac, javadoc, findbugs warnings related to security work. + (Chris Douglas, Po Cheung via shv) + + HADOOP-7140. IPC Reader threads do not stop when server stops (todd) + + HADOOP-7094. hadoop.css got lost during project split (cos) + + HADOOP-7145. Configuration.getLocalPath should trim whitespace from + the provided directories. (todd) + + HADOOP-7156. Workaround for unsafe implementations of getpwuid_r (todd) + + HADOOP-6898. FileSystem.copyToLocal creates files with 777 permissions. + (Aaron T. Myers via tomwhite) + + HADOOP-7229. Do not default to an absolute path for kinit in Kerberos + auto-renewal thread. (Aaron T. Myers via todd) + + HADOOP-7172. SecureIO should not check owner on non-secure + clusters that have no native support. (todd via eli) + + HADOOP-7184. Remove deprecated config local.cache.size from + core-default.xml (todd) + + HADOOP-7245. FsConfig should use constants in CommonConfigurationKeys. + (tomwhite via eli) + + HADOOP-7068. Ivy resolve force mode should be turned off by default. + (Luke Lu via tomwhite) + + HADOOP-7296. The FsPermission(FsPermission) constructor does not use the + sticky bit. (Siddharth Seth via tomwhite) + + HADOOP-7300. Configuration methods that return collections are inconsistent + about mutability. (todd) + + HADOOP-7305. Eclipse project classpath should include tools.jar from JDK. + (Niels Basjes via todd) + + HADOOP-7318. MD5Hash factory should reset the digester it returns. + (todd via eli) + + HADOOP-7287. Configuration deprecation mechanism doesn't work properly for + GenericOptionsParser and Tools. (Aaron T. Myers via todd) + + HADOOP-7146. RPC server leaks file descriptors (todd) + + HADOOP-7276. Hadoop native builds fail on ARM due to -m32 (Trevor Robinson + via eli) + + HADOOP-7121. Exceptions while serializing IPC call responses are not + handled well. (todd) + + HADOOP-7351 Regression: HttpServer#getWebAppsPath used to be protected + so subclasses could supply alternate webapps path but it was made private + by HADOOP-6461 (Stack) + + HADOOP-7349. HADOOP-7121 accidentally disabled some tests in TestIPC. + (todd) + + HADOOP-7390. VersionInfo not generated properly in git after unsplit. (todd + via atm) + + HADOOP-7568. SequenceFile should not print into stdout. + (Plamen Jeliazkov via shv) + + HADOOP-7663. Fix TestHDFSTrash failure. (Mayank Bansal via shv) + + HADOOP-7457. Remove out-of-date Chinese language documentation. + (Jakob Homan via eli) + + HADOOP-7783. Add more symlink tests that cover intermediate links. (eli) + +Release 0.21.1 - Unreleased + + IMPROVEMENTS + + HADOOP-6934. Test for ByteWritable comparator. + (Johannes Zillmann via Eli Collins) + + HADOOP-6786. test-patch needs to verify Herriot integrity (cos) + + HADOOP-7177. CodecPool should report which compressor it is using. + (Allen Wittenauer via eli) + + BUG FIXES + + HADOOP-6925. BZip2Codec incorrectly implements read(). + (Todd Lipcon via Eli Collins) + + HADOOP-6833. IPC leaks call parameters when exceptions thrown. + (Todd Lipcon via Eli Collins) + + HADOOP-6971. Clover build doesn't generate per-test coverage (cos) + + HADOOP-6993. Broken link on cluster setup page of docs. (eli) + + HADOOP-6944. [Herriot] Implement a functionality for getting proxy users + definitions like groups and hosts. (Vinay Thota via cos) + + HADOOP-6954. Sources JARs are not correctly published to the Maven + repository. (tomwhite) + + HADOOP-7052. misspelling of threshold in conf/log4j.properties. + (Jingguo Yao via eli) + + HADOOP-7053. wrong FSNamesystem Audit logging setting in + conf/log4j.properties. (Jingguo Yao via eli) + + HADOOP-7120. Fix a syntax error in test-patch.sh. (szetszwo) + + HADOOP-7162. Rmove a duplicated call FileSystem.listStatus(..) in FsShell. + (Alexey Diomin via szetszwo) + + HADOOP-7117. Remove fs.checkpoint.* from core-default.xml and replace + fs.checkpoint.* with dfs.namenode.checkpoint.* in documentations. + (Harsh J Chouraria via szetszwo) + + HADOOP-7193. Correct the "fs -touchz" command help message. + (Uma Maheswara Rao G via szetszwo) + + HADOOP-7174. Null is displayed in the "fs -copyToLocal" command. + (Uma Maheswara Rao G via szetszwo) + + HADOOP-7194. Fix resource leak in IOUtils.copyBytes(..). + (Devaraj K via szetszwo) + + HADOOP-7183. WritableComparator.get should not cache comparator objects. + (tomwhite via eli) + +Release 0.21.0 - 2010-08-13 + + INCOMPATIBLE CHANGES + + HADOOP-4895. Remove deprecated methods DFSClient.getHints(..) and + DFSClient.isDirectory(..). (szetszwo) + + HADOOP-4941. Remove deprecated FileSystem methods: getBlockSize(Path f), + getLength(Path f) and getReplication(Path src). (szetszwo) + + HADOOP-4648. Remove obsolete, deprecated InMemoryFileSystem and + ChecksumDistributedFileSystem. (cdouglas via szetszwo) + + HADOOP-4940. Remove a deprecated method FileSystem.delete(Path f). (Enis + Soztutar via szetszwo) + + HADOOP-4010. Change semantics for LineRecordReader to read an additional + line per split- rather than moving back one character in the stream- to + work with splittable compression codecs. (Abdul Qadeer via cdouglas) + + HADOOP-5094. Show hostname and separate live/dead datanodes in DFSAdmin + report. (Jakob Homan via szetszwo) + + HADOOP-4942. Remove deprecated FileSystem methods getName() and + getNamed(String name, Configuration conf). (Jakob Homan via szetszwo) + + HADOOP-5486. Removes the CLASSPATH string from the command line and instead + exports it in the environment. (Amareshwari Sriramadasu via ddas) + + HADOOP-2827. Remove deprecated NetUtils::getServerAddress. (cdouglas) + + HADOOP-5681. Change examples RandomWriter and RandomTextWriter to + use new mapreduce API. (Amareshwari Sriramadasu via sharad) + + HADOOP-5680. Change org.apache.hadoop.examples.SleepJob to use new + mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5699. Change org.apache.hadoop.examples.PiEstimator to use + new mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5720. Introduces new task types - JOB_SETUP, JOB_CLEANUP + and TASK_CLEANUP. Removes the isMap methods from TaskID/TaskAttemptID + classes. (ddas) + + HADOOP-5668. Change TotalOrderPartitioner to use new API. (Amareshwari + Sriramadasu via cdouglas) + + HADOOP-5738. Split "waiting_tasks" JobTracker metric into waiting maps and + waiting reduces. (Sreekanth Ramakrishnan via cdouglas) + + HADOOP-5679. Resolve findbugs warnings in core/streaming/pipes/examples. + (Jothi Padmanabhan via sharad) + + HADOOP-4359. Support for data access authorization checking on Datanodes. + (Kan Zhang via rangadi) + + HADOOP-5690. Change org.apache.hadoop.examples.DBCountPageView to use + new mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5694. Change org.apache.hadoop.examples.dancing to use new + mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5696. Change org.apache.hadoop.examples.Sort to use new + mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5698. Change org.apache.hadoop.examples.MultiFileWordCount to + use new mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5913. Provide ability to an administrator to stop and start + job queues. (Rahul Kumar Singh and Hemanth Yamijala via yhemanth) + + MAPREDUCE-711. Removed Distributed Cache from Common, to move it + under Map/Reduce. (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-6201. Change FileSystem::listStatus contract to throw + FileNotFoundException if the directory does not exist, rather than letting + this be implementation-specific. (Jakob Homan via cdouglas) + + HADOOP-6230. Moved process tree and memory calculator related classes + from Common to Map/Reduce. (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-6203. FsShell rm/rmr error message indicates exceeding Trash quota + and suggests using -skpTrash, when moving to trash fails. + (Boris Shkolnik via suresh) + + HADOOP-6303. Eclipse .classpath template has outdated jar files and is + missing some new ones. (cos) + + HADOOP-6396. Fix uninformative exception message when unable to parse + umask. (jghoman) + + HADOOP-6299. Reimplement the UserGroupInformation to use the OS + specific and Kerberos JAAS login. (omalley) + + HADOOP-6686. Remove redundant exception class name from the exception + message for the exceptions thrown at RPC client. (suresh) + + HADOOP-6701. Fix incorrect exit codes returned from chmod, chown and chgrp + commands from FsShell. (Ravi Phulari via suresh) + + NEW FEATURES + + HADOOP-6332. Large-scale Automated Test Framework. (sharad, Sreekanth + Ramakrishnan, at all via cos) + + HADOOP-4268. Change fsck to use ClientProtocol methods so that the + corresponding permission requirement for running the ClientProtocol + methods will be enforced. (szetszwo) + + HADOOP-3953. Implement sticky bit for directories in HDFS. (Jakob Homan + via szetszwo) + + HADOOP-4368. Implement df in FsShell to show the status of a FileSystem. + (Craig Macdonald via szetszwo) + + HADOOP-3741. Add a web ui to the SecondaryNameNode for showing its status. + (szetszwo) + + HADOOP-5018. Add pipelined writers to Chukwa. (Ari Rabkin via cdouglas) + + HADOOP-5052. Add an example computing exact digits of pi using the + Bailey-Borwein-Plouffe algorithm. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-4927. Adds a generic wrapper around outputformat to allow creation of + output on demand (Jothi Padmanabhan via ddas) + + HADOOP-5144. Add a new DFSAdmin command for changing the setting of restore + failed storage replicas in namenode. (Boris Shkolnik via szetszwo) + + HADOOP-5258. Add a new DFSAdmin command to print a tree of the rack and + datanode topology as seen by the namenode. (Jakob Homan via szetszwo) + + HADOOP-4756. A command line tool to access JMX properties on NameNode + and DataNode. (Boris Shkolnik via rangadi) + + HADOOP-4539. Introduce backup node and checkpoint node. (shv) + + HADOOP-5363. Add support for proxying connections to multiple clusters with + different versions to hdfsproxy. (Zhiyong Zhang via cdouglas) + + HADOOP-5528. Add a configurable hash partitioner operating on ranges of + BinaryComparable keys. (Klaas Bosteels via shv) + + HADOOP-5257. HDFS servers may start and stop external components through + a plugin interface. (Carlos Valiente via dhruba) + + HADOOP-5450. Add application-specific data types to streaming's typed bytes + interface. (Klaas Bosteels via omalley) + + HADOOP-5518. Add contrib/mrunit, a MapReduce unit test framework. + (Aaron Kimball via cutting) + + HADOOP-5469. Add /metrics servlet to daemons, providing metrics + over HTTP as either text or JSON. (Philip Zeyliger via cutting) + + HADOOP-5467. Introduce offline fsimage image viewer. (Jakob Homan via shv) + + HADOOP-5752. Add a new hdfs image processor, Delimited, to oiv. (Jakob + Homan via szetszwo) + + HADOOP-5266. Adds the capability to do mark/reset of the reduce values + iterator in the Context object API. (Jothi Padmanabhan via ddas) + + HADOOP-5745. Allow setting the default value of maxRunningJobs for all + pools. (dhruba via matei) + + HADOOP-5643. Adds a way to decommission TaskTrackers while the JobTracker + is running. (Amar Kamat via ddas) + + HADOOP-4829. Allow FileSystem shutdown hook to be disabled. + (Todd Lipcon via tomwhite) + + HADOOP-5815. Sqoop: A database import tool for Hadoop. + (Aaron Kimball via tomwhite) + + HADOOP-4861. Add disk usage with human-readable size (-duh). + (Todd Lipcon via tomwhite) + + HADOOP-5844. Use mysqldump when connecting to local mysql instance in Sqoop. + (Aaron Kimball via tomwhite) + + HADOOP-5976. Add a new command, classpath, to the hadoop script. (Owen + O'Malley and Gary Murry via szetszwo) + + HADOOP-6120. Add support for Avro specific and reflect data. + (sharad via cutting) + + HADOOP-6226. Moves BoundedByteArrayOutputStream from the tfile package to + the io package and makes it available to other users (MAPREDUCE-318). + (Jothi Padmanabhan via ddas) + + HADOOP-6105. Adds support for automatically handling deprecation of + configuration keys. (V.V.Chaitanya Krishna via yhemanth) + + HADOOP-6235. Adds new method to FileSystem for clients to get server + defaults. (Kan Zhang via suresh) + + HADOOP-6234. Add new option dfs.umaskmode to set umask in configuration + to use octal or symbolic instead of decimal. (Jakob Homan via suresh) + + HADOOP-5073. Add annotation mechanism for interface classification. + (Jakob Homan via suresh) + + HADOOP-4012. Provide splitting support for bzip2 compressed files. (Abdul + Qadeer via cdouglas) + + HADOOP-6246. Add backward compatibility support to use deprecated decimal + umask from old configuration. (Jakob Homan via suresh) + + HADOOP-4952. Add new improved file system interface FileContext for the + application writer (Sanjay Radia via suresh) + + HADOOP-6170. Add facility to tunnel Avro RPCs through Hadoop RPCs. + This permits one to take advantage of both Avro's RPC versioning + features and Hadoop's proven RPC scalability. (cutting) + + HADOOP-6267. Permit building contrib modules located in external + source trees. (Todd Lipcon via cutting) + + HADOOP-6240. Add new FileContext rename operation that posix compliant + that allows overwriting existing destination. (suresh) + + HADOOP-6204. Implementing aspects development and fault injeciton + framework for Hadoop (cos) + + HADOOP-6313. Implement Syncable interface in FSDataOutputStream to expose + flush APIs to application users. (Hairong Kuang via suresh) + + HADOOP-6284. Add a new parameter, HADOOP_JAVA_PLATFORM_OPTS, to + hadoop-config.sh so that it allows setting java command options for + JAVA_PLATFORM. (Koji Noguchi via szetszwo) + + HADOOP-6337. Updates FilterInitializer class to be more visible, + and the init of the class is made to take a Configuration argument. + (Jakob Homan via ddas) + + Hadoop-6223. Add new file system interface AbstractFileSystem with + implementation of some file systems that delegate to old FileSystem. + (Sanjay Radia via suresh) + + HADOOP-6433. Introduce asychronous deletion of files via a pool of + threads. This can be used to delete files in the Distributed + Cache. (Zheng Shao via dhruba) + + HADOOP-6415. Adds a common token interface for both job token and + delegation token. (Kan Zhang via ddas) + + HADOOP-6408. Add a /conf servlet to dump running configuration. + (Todd Lipcon via tomwhite) + + HADOOP-6520. Adds APIs to read/write Token and secret keys. Also + adds the automatic loading of tokens into UserGroupInformation + upon login. The tokens are read from a file specified in the + environment variable. (ddas) + + HADOOP-6419. Adds SASL based authentication to RPC. + (Kan Zhang via ddas) + + HADOOP-6510. Adds a way for superusers to impersonate other users + in a secure environment. (Jitendra Nath Pandey via ddas) + + HADOOP-6421. Adds Symbolic links to FileContext, AbstractFileSystem. + It also adds a limited implementation for the local file system + (RawLocalFs) that allows local symlinks. (Eli Collins via Sanjay Radia) + + HADOOP-6577. Add hidden configuration option "ipc.server.max.response.size" + to change the default 1 MB, the maximum size when large IPC handler + response buffer is reset. (suresh) + + HADOOP-6568. Adds authorization for the default servlets. + (Vinod Kumar Vavilapalli via ddas) + + HADOOP-6586. Log authentication and authorization failures and successes + for RPC (boryas) + + HADOOP-6580. UGI should contain authentication method. (jnp via boryas) + + HADOOP-6657. Add a capitalization method to StringUtils for MAPREDUCE-1545. + (Luke Lu via Steve Loughran) + + HADOOP-6692. Add FileContext#listStatus that returns an iterator. + (hairong) + + HADOOP-6869. Functionality to create file or folder on a remote daemon + side (Vinay Thota via cos) + + IMPROVEMENTS + + HADOOP-6798. Align Ivy version for all Hadoop subprojects. (cos) + + HADOOP-6777. Implement a functionality for suspend and resume a process. + (Vinay Thota via cos) + + HADOOP-6772. Utilities for system tests specific. (Vinay Thota via cos) + + HADOOP-6771. Herriot's artifact id for Maven deployment should be set to + hadoop-core-instrumented (cos) + + HADOOP-6752. Remote cluster control functionality needs JavaDocs + improvement (Balaji Rajagopalan via cos). + + HADOOP-4565. Added CombineFileInputFormat to use data locality information + to create splits. (dhruba via zshao) + + HADOOP-4936. Improvements to TestSafeMode. (shv) + + HADOOP-4985. Remove unnecessary "throw IOException" declarations in + FSDirectory related methods. (szetszwo) + + HADOOP-5017. Change NameNode.namesystem declaration to private. (szetszwo) + + HADOOP-4794. Add branch information from the source version control into + the version information that is compiled into Hadoop. (cdouglas via + omalley) + + HADOOP-5070. Increment copyright year to 2009, remove assertions of ASF + copyright to licensed files. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-5037. Deprecate static FSNamesystem.getFSNamesystem(). (szetszwo) + + HADOOP-5088. Include releaseaudit target as part of developer test-patch + target. (Giridharan Kesavan via nigel) + + HADOOP-2721. Uses setsid when creating new tasks so that subprocesses of + this process will be within this new session (and this process will be + the process leader for all the subprocesses). Killing the process leader, + or the main Java task in Hadoop's case, kills the entire subtree of + processes. (Ravi Gummadi via ddas) + + HADOOP-5097. Remove static variable JspHelper.fsn, a static reference to + a non-singleton FSNamesystem object. (szetszwo) + + HADOOP-3327. Improves handling of READ_TIMEOUT during map output copying. + (Amareshwari Sriramadasu via ddas) + + HADOOP-5124. Choose datanodes randomly instead of starting from the first + datanode for providing fairness. (hairong via szetszwo) + + HADOOP-4930. Implement a Linux native executable that can be used to + launch tasks as users. (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5122. Fix format of fs.default.name value in libhdfs test conf. + (Craig Macdonald via tomwhite) + + HADOOP-5038. Direct daemon trace to debug log instead of stdout. (Jerome + Boulon via cdouglas) + + HADOOP-5101. Improve packaging by adding 'all-jars' target building core, + tools, and example jars. Let findbugs depend on this rather than the 'tar' + target. (Giridharan Kesavan via cdouglas) + + HADOOP-4868. Splits the hadoop script into three parts - bin/hadoop, + bin/mapred and bin/hdfs. (Sharad Agarwal via ddas) + + HADOOP-1722. Adds support for TypedBytes and RawBytes in Streaming. + (Klaas Bosteels via ddas) + + HADOOP-4220. Changes the JobTracker restart tests so that they take much + less time. (Amar Kamat via ddas) + + HADOOP-4885. Try to restore failed name-node storage directories at + checkpoint time. (Boris Shkolnik via shv) + + HADOOP-5209. Update year to 2009 for javadoc. (szetszwo) + + HADOOP-5279. Remove unnecessary targets from test-patch.sh. + (Giridharan Kesavan via nigel) + + HADOOP-5120. Remove the use of FSNamesystem.getFSNamesystem() from + UpgradeManagerNamenode and UpgradeObjectNamenode. (szetszwo) + + HADOOP-5222. Add offset to datanode clienttrace. (Lei Xu via cdouglas) + + HADOOP-5240. Skip re-building javadoc when it is already + up-to-date. (Aaron Kimball via cutting) + + HADOOP-5042. Add a cleanup stage to log rollover in Chukwa appender. + (Jerome Boulon via cdouglas) + + HADOOP-5264. Removes redundant configuration object from the TaskTracker. + (Sharad Agarwal via ddas) + + HADOOP-5232. Enable patch testing to occur on more than one host. + (Giri Kesavan via nigel) + + HADOOP-4546. Fix DF reporting for AIX. (Bill Habermaas via cdouglas) + + HADOOP-5023. Add Tomcat support to HdfsProxy. (Zhiyong Zhang via cdouglas) + + HADOOP-5317. Provide documentation for LazyOutput Feature. + (Jothi Padmanabhan via johan) + + HADOOP-5455. Document rpc metrics context to the extent dfs, mapred, and + jvm contexts are documented. (Philip Zeyliger via cdouglas) + + HADOOP-5358. Provide scripting functionality to the synthetic load + generator. (Jakob Homan via hairong) + + HADOOP-5442. Paginate jobhistory display and added some search + capabilities. (Amar Kamat via acmurthy) + + HADOOP-4842. Streaming now allows specifiying a command for the combiner. + (Amareshwari Sriramadasu via ddas) + + HADOOP-5196. avoiding unnecessary byte[] allocation in + SequenceFile.CompressedBytes and SequenceFile.UncompressedBytes. + (hong tang via mahadev) + + HADOOP-4655. New method FileSystem.newInstance() that always returns + a newly allocated FileSystem object. (dhruba) + + HADOOP-4788. Set Fair scheduler to assign both a map and a reduce on each + heartbeat by default. (matei) + + HADOOP-5491. In contrib/index, better control memory usage. + (Ning Li via cutting) + + HADOOP-5423. Include option of preserving file metadata in + SequenceFile::sort. (Michael Tamm via cdouglas) + + HADOOP-5331. Add support for KFS appends. (Sriram Rao via cdouglas) + + HADOOP-4365. Make Configuration::getProps protected in support of + meaningful subclassing. (Steve Loughran via cdouglas) + + HADOOP-2413. Remove the static variable FSNamesystem.fsNamesystemObject. + (Konstantin Shvachko via szetszwo) + + HADOOP-4584. Improve datanode block reports and associated file system + scan to avoid interefering with normal datanode operations. + (Suresh Srinivas via rangadi) + + HADOOP-5502. Documentation for backup and checkpoint nodes. + (Jakob Homan via shv) + + HADOOP-5485. Mask actions in the fair scheduler's servlet UI based on + value of webinterface.private.actions. + (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-5581. HDFS should throw FileNotFoundException when while opening + a file that does not exist. (Brian Bockelman via rangadi) + + HADOOP-5509. PendingReplicationBlocks does not start monitor in the + constructor. (shv) + + HADOOP-5494. Modify sorted map output merger to lazily read values, + rather than buffering at least one record for each segment. (Devaraj Das + via cdouglas) + + HADOOP-5396. Provide ability to refresh queue ACLs in the JobTracker + without having to restart the daemon. + (Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-4490. Provide ability to run tasks as job owners. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5697. Change org.apache.hadoop.examples.Grep to use new + mapreduce api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5625. Add operation duration to clienttrace. (Lei Xu via cdouglas) + + HADOOP-5705. Improve TotalOrderPartitioner efficiency by updating the trie + construction. (Dick King via cdouglas) + + HADOOP-5589. Eliminate source limit of 64 for map-side joins imposed by + TupleWritable encoding. (Jingkei Ly via cdouglas) + + HADOOP-5734. Correct block placement policy description in HDFS + Design document. (Konstantin Boudnik via shv) + + HADOOP-5657. Validate data in TestReduceFetch to improve merge test + coverage. (cdouglas) + + HADOOP-5613. Change S3Exception to checked exception. + (Andrew Hitchcock via tomwhite) + + HADOOP-5717. Create public enum class for the Framework counters in + org.apache.hadoop.mapreduce. (Amareshwari Sriramadasu via sharad) + + HADOOP-5217. Split AllTestDriver for core, hdfs and mapred. (sharad) + + HADOOP-5364. Add certificate expiration warning to HsftpFileSystem and HDFS + proxy. (Zhiyong Zhang via cdouglas) + + HADOOP-5733. Add map/reduce slot capacity and blacklisted capacity to + JobTracker metrics. (Sreekanth Ramakrishnan via cdouglas) + + HADOOP-5596. Add EnumSetWritable. (He Yongqiang via szetszwo) + + HADOOP-5727. Simplify hashcode for ID types. (Shevek via cdouglas) + + HADOOP-5500. In DBOutputFormat, where field names are absent permit the + number of fields to be sufficient to construct the select query. (Enis + Soztutar via cdouglas) + + HADOOP-5081. Split TestCLI into HDFS, Mapred and Core tests. (sharad) + + HADOOP-5015. Separate block management code from FSNamesystem. (Suresh + Srinivas via szetszwo) + + HADOOP-5080. Add new test cases to TestMRCLI and TestHDFSCLI + (V.Karthikeyan via nigel) + + HADOOP-5135. Splits the tests into different directories based on the + package. Four new test targets have been defined - run-test-core, + run-test-mapred, run-test-hdfs and run-test-hdfs-with-mr. + (Sharad Agarwal via ddas) + + HADOOP-5771. Implements unit tests for LinuxTaskController. + (Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-5419. Provide a facility to query the Queue ACLs for the + current user. + (Rahul Kumar Singh via yhemanth) + + HADOOP-5780. Improve per block message prited by "-metaSave" in HDFS. + (Raghu Angadi) + + HADOOP-5823. Added a new class DeprecatedUTF8 to help with removing + UTF8 related javac warnings. These warnings are removed in + FSEditLog.java as a use case. (Raghu Angadi) + + HADOOP-5824. Deprecate DataTransferProtocol.OP_READ_METADATA and remove + the corresponding unused codes. (Kan Zhang via szetszwo) + + HADOOP-5721. Factor out EditLogFileInputStream and EditLogFileOutputStream + into independent classes. (Luca Telloli & Flavio Junqueira via shv) + + HADOOP-5838. Fix a few javac warnings in HDFS. (Raghu Angadi) + + HADOOP-5854. Fix a few "Inconsistent Synchronization" warnings in HDFS. + (Raghu Angadi) + + HADOOP-5369. Small tweaks to reduce MapFile index size. (Ben Maurer + via sharad) + + HADOOP-5858. Eliminate UTF8 and fix warnings in test/hdfs-with-mr package. + (shv) + + HADOOP-5866. Move DeprecatedUTF8 from o.a.h.io to o.a.h.hdfs since it may + not be used outside hdfs. (Raghu Angadi) + + HADOOP-5857. Move normal java methods from hdfs .jsp files to .java files. + (szetszwo) + + HADOOP-5873. Remove deprecated methods randomDataNode() and + getDatanodeByIndex(..) in FSNamesystem. (szetszwo) + + HADOOP-5572. Improves the progress reporting for the sort phase for both + maps and reduces. (Ravi Gummadi via ddas) + + HADOOP-5839. Fix EC2 scripts to allow remote job submission. + (Joydeep Sen Sarma via tomwhite) + + HADOOP-5877. Fix javac warnings in TestHDFSServerPorts, TestCheckpoint, + TestNameEditsConfig, TestStartup and TestStorageRestore. + (Jakob Homan via shv) + + HADOOP-5438. Provide a single FileSystem method to create or + open-for-append to a file. (He Yongqiang via dhruba) + + HADOOP-5472. Change DistCp to support globbing of input paths. (Dhruba + Borthakur and Rodrigo Schmidt via szetszwo) + + HADOOP-5175. Don't unpack libjars on classpath. (Todd Lipcon via tomwhite) + + HADOOP-5620. Add an option to DistCp for preserving modification and access + times. (Rodrigo Schmidt via szetszwo) + + HADOOP-5664. Change map serialization so a lock is obtained only where + contention is possible, rather than for each write. (cdouglas) + + HADOOP-5896. Remove the dependency of GenericOptionsParser on + Option.withArgPattern. (Giridharan Kesavan and Sharad Agarwal via + sharad) + + HADOOP-5784. Makes the number of heartbeats that should arrive a second + at the JobTracker configurable. (Amareshwari Sriramadasu via ddas) + + HADOOP-5955. Changes TestFileOuputFormat so that is uses LOCAL_MR + instead of CLUSTER_MR. (Jothi Padmanabhan via das) + + HADOOP-5948. Changes TestJavaSerialization to use LocalJobRunner + instead of MiniMR/DFS cluster. (Jothi Padmanabhan via das) + + HADOOP-2838. Add mapred.child.env to pass environment variables to + tasktracker's child processes. (Amar Kamat via sharad) + + HADOOP-5961. DataNode process understand generic hadoop command line + options (like -Ddfs.property=value). (Raghu Angadi) + + HADOOP-5938. Change org.apache.hadoop.mapred.jobcontrol to use new + api. (Amareshwari Sriramadasu via sharad) + + HADOOP-2141. Improves the speculative execution heuristic. The heuristic + is currently based on the progress-rates of tasks and the expected time + to complete. Also, statistics about trackers are collected, and speculative + tasks are not given to the ones deduced to be slow. + (Andy Konwinski and ddas) + + HADOOP-5952. Change "-1 tests included" wording in test-patch.sh. + (Gary Murry via szetszwo) + + HADOOP-6106. Provides an option in ShellCommandExecutor to timeout + commands that do not complete within a certain amount of time. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5925. EC2 scripts should exit on error. (tomwhite) + + HADOOP-6109. Change Text to grow its internal buffer exponentially, rather + than the max of the current length and the proposed length to improve + performance reading large values. (thushara wijeratna via cdouglas) + + HADOOP-2366. Support trimmed strings in Configuration. (Michele Catasta + via szetszwo) + + HADOOP-6099. The RPC module can be configured to not send period pings. + The default behaviour of sending periodic pings remain unchanged. (dhruba) + + HADOOP-6142. Update documentation and use of harchives for relative paths + added in MAPREDUCE-739. (Mahadev Konar via cdouglas) + + HADOOP-6148. Implement a fast, pure Java CRC32 calculator which outperforms + java.util.zip.CRC32. (Todd Lipcon and Scott Carey via szetszwo) + + HADOOP-6146. Upgrade to JetS3t version 0.7.1. (tomwhite) + + HADOOP-6161. Add get/setEnum methods to Configuration. (cdouglas) + + HADOOP-6160. Fix releaseaudit target to run on specific directories. + (gkesavan) + + HADOOP-6169. Removing deprecated method calls in TFile. (hong tang via + mahadev) + + HADOOP-6176. Add a couple package private methods to AccessTokenHandler + for testing. (Kan Zhang via szetszwo) + + HADOOP-6182. Fix ReleaseAudit warnings (Giridharan Kesavan and Lee Tucker + via gkesavan) + + HADOOP-6173. Change src/native/packageNativeHadoop.sh to package all + native library files. (Hong Tang via szetszwo) + + HADOOP-6184. Provide an API to dump Configuration in a JSON format. + (V.V.Chaitanya Krishna via yhemanth) + + HADOOP-6224. Add a method to WritableUtils performing a bounded read of an + encoded String. (Jothi Padmanabhan via cdouglas) + + HADOOP-6133. Add a caching layer to Configuration::getClassByName to + alleviate a performance regression introduced in a compatibility layer. + (Todd Lipcon via cdouglas) + + HADOOP-6252. Provide a method to determine if a deprecated key is set in + config file. (Jakob Homan via suresh) + + HADOOP-5879. Read compression level and strategy from Configuration for + gzip compression. (He Yongqiang via cdouglas) + + HADOOP-6216. Support comments in host files. (Ravi Phulari and Dmytro + Molkov via szetszwo) + + HADOOP-6217. Update documentation for project split. (Corinne Chandel via + omalley) + + HADOOP-6268. Add ivy jar to .gitignore. (Todd Lipcon via cdouglas) + + HADOOP-6270. Support deleteOnExit in FileContext. (Suresh Srinivas via + szetszwo) + + HADOOP-6233. Rename configuration keys towards API standardization and + backward compatibility. (Jithendra Pandey via suresh) + + HADOOP-6260. Add additional unit tests for FileContext util methods. + (Gary Murry via suresh). + + HADOOP-6309. Change build.xml to run tests with java asserts. (Eli + Collins via szetszwo) + + HADOOP-6326. Hundson runs should check for AspectJ warnings and report + failure if any is present (cos) + + HADOOP-6329. Add build-fi directory to the ignore lists. (szetszwo) + + HADOOP-5107. Use Maven ant tasks to publish the subproject jars. + (Giridharan Kesavan via omalley) + + HADOOP-6343. Log unexpected throwable object caught in RPC. (Jitendra Nath + Pandey via szetszwo) + + HADOOP-6367. Removes Access Token implementation from common. + (Kan Zhang via ddas) + + HADOOP-6395. Upgrade some libraries to be consistent across common, hdfs, + and mapreduce. (omalley) + + HADOOP-6398. Build is broken after HADOOP-6395 patch has been applied (cos) + + HADOOP-6413. Move TestReflectionUtils to Common. (Todd Lipcon via tomwhite) + + HADOOP-6283. Improve the exception messages thrown by + FileUtil$HardLink.getLinkCount(..). (szetszwo) + + HADOOP-6279. Add Runtime::maxMemory to JVM metrics. (Todd Lipcon via + cdouglas) + + HADOOP-6305. Unify build property names to facilitate cross-projects + modifications (cos) + + HADOOP-6312. Remove unnecessary debug logging in Configuration constructor. + (Aaron Kimball via cdouglas) + + HADOOP-6366. Reduce ivy console output to ovservable level (cos) + + HADOOP-6400. Log errors getting Unix UGI. (Todd Lipcon via tomwhite) + + HADOOP-6346. Add support for specifying unpack pattern regex to + RunJar.unJar. (Todd Lipcon via tomwhite) + + HADOOP-6422. Make RPC backend plugable, protocol-by-protocol, to + ease evolution towards Avro. (cutting) + + HADOOP-5958. Use JDK 1.6 File APIs in DF.java wherever possible. + (Aaron Kimball via tomwhite) + + HADOOP-6222. Core doesn't have TestCommonCLI facility. (cos) + + HADOOP-6394. Add a helper class to simplify FileContext related tests and + improve code reusability. (Jitendra Nath Pandey via suresh) + + HADOOP-4656. Add a user to groups mapping service. (boryas, acmurthy) + + HADOOP-6435. Make RPC.waitForProxy with timeout public. (Steve Loughran + via tomwhite) + + HADOOP-6472. add tokenCache option to GenericOptionsParser for passing + file with secret keys to a map reduce job. (boryas) + + HADOOP-3205. Read multiple chunks directly from FSInputChecker subclass + into user buffers. (Todd Lipcon via tomwhite) + + HADOOP-6479. TestUTF8 assertions could fail with better text. + (Steve Loughran via tomwhite) + + HADOOP-6155. Deprecate RecordIO anticipating Avro. (Tom White via cdouglas) + + HADOOP-6492. Make some Avro serialization APIs public. + (Aaron Kimball via cutting) + + HADOOP-6497. Add an adapter for Avro's SeekableInput interface, so + that Avro can read FileSystem data. + (Aaron Kimball via cutting) + + HADOOP-6495. Identifier should be serialized after the password is + created In Token constructor (jnp via boryas) + + HADOOP-6518. Makes the UGI honor the env var KRB5CCNAME. + (Owen O'Malley via ddas) + + HADOOP-6531. Enhance FileUtil with an API to delete all contents of a + directory. (Amareshwari Sriramadasu via yhemanth) + + HADOOP-6547. Move DelegationToken into Common, so that it can be used by + MapReduce also. (devaraj via omalley) + + HADOOP-6552. Puts renewTGT=true and useTicketCache=true for the keytab + kerberos options. (ddas) + + HADOOP-6534. Trim whitespace from directory lists initializing + LocalDirAllocator. (Todd Lipcon via cdouglas) + + HADOOP-6559. Makes the RPC client automatically re-login when the SASL + connection setup fails. This is applicable only to keytab based logins. + (Devaraj Das) + + HADOOP-6551. Delegation token renewing and cancelling should provide + meaningful exceptions when there are failures instead of returning + false. (omalley) + + HADOOP-6583. Captures authentication and authorization metrics. (ddas) + + HADOOP-6543. Allows secure clients to talk to unsecure clusters. + (Kan Zhang via ddas) + + HADOOP-6579. Provide a mechanism for encoding/decoding Tokens from + a url-safe string and change the commons-code library to 1.4. (omalley) + + HADOOP-6596. Add a version field to the AbstractDelegationTokenIdentifier's + serialized value. (omalley) + + HADOOP-6573. Support for persistent delegation tokens. + (Jitendra Pandey via shv) + + HADOOP-6594. Provide a fetchdt tool via bin/hdfs. (jhoman via acmurthy) + + HADOOP-6589. Provide better error messages when RPC authentication fails. + (Kan Zhang via omalley) + + HADOOP-6599 Split existing RpcMetrics into RpcMetrics & RpcDetailedMetrics. + (Suresh Srinivas via Sanjay Radia) + + HADOOP-6537 Declare more detailed exceptions in FileContext and + AbstractFileSystem (Suresh Srinivas via Sanjay Radia) + + HADOOP-6486. fix common classes to work with Avro 1.3 reflection. + (cutting via tomwhite) + + HADOOP-6591. HarFileSystem can handle paths with the whitespace characters. + (Rodrigo Schmidt via dhruba) + + HADOOP-6407. Have a way to automatically update Eclipse .classpath file + when new libs are added to the classpath through Ivy. (tomwhite) + + HADOOP-3659. Patch to allow hadoop native to compile on Mac OS X. + (Colin Evans and Allen Wittenauer via tomwhite) + + HADOOP-6471. StringBuffer -> StringBuilder - conversion of references + as necessary. (Kay Kay via tomwhite) + + HADOOP-6646. Move HarfileSystem out of Hadoop Common. (mahadev) + + HADOOP-6566. Add methods supporting, enforcing narrower permissions on + local daemon directories. (Arun Murthy and Luke Lu via cdouglas) + + HADOOP-6705. Fix to work with 1.5 version of jiracli + (Giridharan Kesavan) + + HADOOP-6658. Exclude Private elements from generated Javadoc. (tomwhite) + + HADOOP-6635. Install/deploy source jars to Maven repo. + (Patrick Angeles via jghoman) + + HADOOP-6717. Log levels in o.a.h.security.Groups too high + (Todd Lipcon via jghoman) + + HADOOP-6667. RPC.waitForProxy should retry through NoRouteToHostException. + (Todd Lipcon via tomwhite) + + HADOOP-6677. InterfaceAudience.LimitedPrivate should take a string not an + enum. (tomwhite) + + HADOOP-678. Remove FileContext#isFile, isDirectory, and exists. + (Eli Collins via hairong) + + HADOOP-6515. Make maximum number of http threads configurable. + (Scott Chen via zshao) + + HADOOP-6563. Add more symlink tests to cover intermediate symlinks + in paths. (Eli Collins via suresh) + + HADOOP-6585. Add FileStatus#isDirectory and isFile. (Eli Collins via + tomwhite) + + HADOOP-6738. Move cluster_setup.xml from MapReduce to Common. + (Tom White via tomwhite) + + HADOOP-6794. Move configuration and script files post split. (tomwhite) + + HADOOP-6403. Deprecate EC2 bash scripts. (tomwhite) + + HADOOP-6769. Add an API in FileSystem to get FileSystem instances based + on users(ddas via boryas) + + HADOOP-6813. Add a new newInstance method in FileSystem that takes + a "user" as argument (ddas via boryas) + + HADOOP-6668. Apply audience and stability annotations to classes in + common. (tomwhite) + + HADOOP-6821. Document changes to memory monitoring. (Hemanth Yamijala + via tomwhite) + + OPTIMIZATIONS + + HADOOP-5595. NameNode does not need to run a replicator to choose a + random DataNode. (hairong) + + HADOOP-5603. Improve NameNode's block placement performance. (hairong) + + HADOOP-5638. More improvement on block placement performance. (hairong) + + HADOOP-6180. NameNode slowed down when many files with same filename + were moved to Trash. (Boris Shkolnik via hairong) + + HADOOP-6166. Further improve the performance of the pure-Java CRC32 + implementation. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-6271. Add recursive and non recursive create and mkdir to + FileContext. (Sanjay Radia via suresh) + + HADOOP-6261. Add URI based tests for FileContext. + (Ravi Pulari via suresh). + + HADOOP-6307. Add a new SequenceFile.Reader constructor in order to support + reading on un-closed file. (szetszwo) + + HADOOP-6467. Improve the performance on HarFileSystem.listStatus(..). + (mahadev via szetszwo) + + HADOOP-6569. FsShell#cat should avoid calling unecessary getFileStatus + before opening a file to read. (hairong) + + HADOOP-6689. Add directory renaming test to existing FileContext tests. + (Eli Collins via suresh) + + HADOOP-6713. The RPC server Listener thread is a scalability bottleneck. + (Dmytro Molkov via hairong) + + BUG FIXES + + HADOOP-6748. Removes hadoop.cluster.administrators, cluster administrators + acl is passed as parameter in constructor. (amareshwari) + + HADOOP-6828. Herrior uses old way of accessing logs directories (Sreekanth + Ramakrishnan via cos) + + HADOOP-6788. [Herriot] Exception exclusion functionality is not working + correctly. (Vinay Thota via cos) + + HADOOP-6773. Ivy folder contains redundant files (cos) + + HADOOP-5379. CBZip2InputStream to throw IOException on data crc error. + (Rodrigo Schmidt via zshao) + + HADOOP-5326. Fixes CBZip2OutputStream data corruption problem. + (Rodrigo Schmidt via zshao) + + HADOOP-4963. Fixes a logging to do with getting the location of + map output file. (Amareshwari Sriramadasu via ddas) + + HADOOP-2337. Trash should close FileSystem on exit and should not start + emtying thread if disabled. (shv) + + HADOOP-5072. Fix failure in TestCodec because testSequenceFileGzipCodec + won't pass without native gzip codec. (Zheng Shao via dhruba) + + HADOOP-5050. TestDFSShell.testFilePermissions should not assume umask + setting. (Jakob Homan via szetszwo) + + HADOOP-4975. Set classloader for nested mapred.join configs. (Jingkei Ly + via cdouglas) + + HADOOP-5078. Remove invalid AMI kernel in EC2 scripts. (tomwhite) + + HADOOP-5045. FileSystem.isDirectory() should not be deprecated. (Suresh + Srinivas via szetszwo) + + HADOOP-4960. Use datasource time, rather than system time, during metrics + demux. (Eric Yang via cdouglas) + + HADOOP-5032. Export conf dir set in config script. (Eric Yang via cdouglas) + + HADOOP-5176. Fix a typo in TestDFSIO. (Ravi Phulari via szetszwo) + + HADOOP-4859. Distinguish daily rolling output dir by adding a timestamp. + (Jerome Boulon via cdouglas) + + HADOOP-4959. Correct system metric collection from top on Redhat 5.1. (Eric + Yang via cdouglas) + + HADOOP-5039. Fix log rolling regex to process only the relevant + subdirectories. (Jerome Boulon via cdouglas) + + HADOOP-5095. Update Chukwa watchdog to accept config parameter. (Jerome + Boulon via cdouglas) + + HADOOP-5147. Correct reference to agent list in Chukwa bin scripts. (Ari + Rabkin via cdouglas) + + HADOOP-5148. Fix logic disabling watchdog timer in Chukwa daemon scripts. + (Ari Rabkin via cdouglas) + + HADOOP-5100. Append, rather than truncate, when creating log4j metrics in + Chukwa. (Jerome Boulon via cdouglas) + + HADOOP-5204. Fix broken trunk compilation on Hudson by letting + task-controller be an independent target in build.xml. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5212. Fix the path translation problem introduced by HADOOP-4868 + running on cygwin. (Sharad Agarwal via omalley) + + HADOOP-5226. Add license headers to html and jsp files. (szetszwo) + + HADOOP-5172. Disable misbehaving Chukwa unit test until it can be fixed. + (Jerome Boulon via nigel) + + HADOOP-4933. Fixes a ConcurrentModificationException problem that shows up + when the history viewer is accessed concurrently. + (Amar Kamat via ddas) + + HADOOP-5253. Remove duplicate call to cn-docs target. + (Giri Kesavan via nigel) + + HADOOP-5251. Fix classpath for contrib unit tests to include clover jar. + (nigel) + + HADOOP-5206. Synchronize "unprotected*" methods of FSDirectory on the root. + (Jakob Homan via shv) + + HADOOP-5292. Fix NPE in KFS::getBlockLocations. (Sriram Rao via lohit) + + HADOOP-5219. Adds a new property io.seqfile.local.dir for use by + SequenceFile, which earlier used mapred.local.dir. (Sharad Agarwal + via ddas) + + HADOOP-5300. Fix ant javadoc-dev target and the typo in the class name + NameNodeActivtyMBean. (szetszwo) + + HADOOP-5218. libhdfs unit test failed because it was unable to + start namenode/datanode. Fixed. (dhruba) + + HADOOP-5273. Add license header to TestJobInProgress.java. (Jakob Homan + via szetszwo) + + HADOOP-5229. Remove duplicate version variables in build files + (Stefan Groschupf via johan) + + HADOOP-5383. Avoid building an unused string in NameNode's + verifyReplication(). (Raghu Angadi) + + HADOOP-5347. Create a job output directory for the bbp examples. (szetszwo) + + HADOOP-5341. Make hadoop-daemon scripts backwards compatible with the + changes in HADOOP-4868. (Sharad Agarwal via yhemanth) + + HADOOP-5456. Fix javadoc links to ClientProtocol#restoreFailedStorage(..). + (Boris Shkolnik via szetszwo) + + HADOOP-5458. Remove leftover Chukwa entries from build, etc. (cdouglas) + + HADOOP-5386. Modify hdfsproxy unit test to start on a random port, + implement clover instrumentation. (Zhiyong Zhang via cdouglas) + + HADOOP-5511. Add Apache License to EditLogBackupOutputStream. (shv) + + HADOOP-5507. Fix JMXGet javadoc warnings. (Boris Shkolnik via szetszwo) + + HADOOP-5191. Accessing HDFS with any ip or hostname should work as long + as it points to the interface NameNode is listening on. (Raghu Angadi) + + HADOOP-5561. Add javadoc.maxmemory parameter to build, preventing OOM + exceptions from javadoc-dev. (Jakob Homan via cdouglas) + + HADOOP-5149. Modify HistoryViewer to ignore unfamiliar files in the log + directory. (Hong Tang via cdouglas) + + HADOOP-5477. Fix rare failure in TestCLI for hosts returning variations of + 'localhost'. (Jakob Homan via cdouglas) + + HADOOP-5194. Disables setsid for tasks run on cygwin. + (Ravi Gummadi via ddas) + + HADOOP-5322. Fix misleading/outdated comments in JobInProgress. + (Amareshwari Sriramadasu via cdouglas) + + HADOOP-5198. Fixes a problem to do with the task PID file being absent and + the JvmManager trying to look for it. (Amareshwari Sriramadasu via ddas) + + HADOOP-5464. DFSClient did not treat write timeout of 0 properly. + (Raghu Angadi) + + HADOOP-4045. Fix processing of IO errors in EditsLog. + (Boris Shkolnik via shv) + + HADOOP-5462. Fixed a double free bug in the task-controller + executable. (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5652. Fix a bug where in-memory segments are incorrectly retained in + memory. (cdouglas) + + HADOOP-5533. Recovery duration shown on the jobtracker webpage is + inaccurate. (Amar Kamat via sharad) + + HADOOP-5647. Fix TestJobHistory to not depend on /tmp. (Ravi Gummadi + via sharad) + + HADOOP-5661. Fixes some findbugs warnings in o.a.h.mapred* packages and + supresses a bunch of them. (Jothi Padmanabhan via ddas) + + HADOOP-5704. Fix compilation problems in TestFairScheduler and + TestCapacityScheduler. (Chris Douglas via szetszwo) + + HADOOP-5650. Fix safemode messages in the Namenode log. (Suresh Srinivas + via szetszwo) + + HADOOP-5488. Removes the pidfile management for the Task JVM from the + framework and instead passes the PID back and forth between the + TaskTracker and the Task processes. (Ravi Gummadi via ddas) + + HADOOP-5658. Fix Eclipse templates. (Philip Zeyliger via shv) + + HADOOP-5709. Remove redundant synchronization added in HADOOP-5661. (Jothi + Padmanabhan via cdouglas) + + HADOOP-5715. Add conf/mapred-queue-acls.xml to the ignore lists. + (szetszwo) + + HADOOP-5592. Fix typo in Streaming doc in reference to GzipCodec. + (Corinne Chandel via tomwhite) + + HADOOP-5656. Counter for S3N Read Bytes does not work. (Ian Nowland + via tomwhite) + + HADOOP-5406. Fix JNI binding for ZlibCompressor::setDictionary. (Lars + Francke via cdouglas) + + HADOOP-3426. Fix/provide handling when DNS lookup fails on the loopback + address. Also cache the result of the lookup. (Steve Loughran via cdouglas) + + HADOOP-5476. Close the underlying InputStream in SequenceFile::Reader when + the constructor throws an exception. (Michael Tamm via cdouglas) + + HADOOP-5675. Do not launch a job if DistCp has no work to do. (Tsz Wo + (Nicholas), SZE via cdouglas) + + HADOOP-5737. Fixes a problem in the way the JobTracker used to talk to + other daemons like the NameNode to get the job's files. Also adds APIs + in the JobTracker to get the FileSystem objects as per the JobTracker's + configuration. (Amar Kamat via ddas) + + HADOOP-5648. Not able to generate gridmix.jar on the already compiled + version of hadoop. (gkesavan) + + HADOOP-5808. Fix import never used javac warnings in hdfs. (szetszwo) + + HADOOP-5203. TT's version build is too restrictive. (Rick Cox via sharad) + + HADOOP-5818. Revert the renaming from FSNamesystem.checkSuperuserPrivilege + to checkAccess by HADOOP-5643. (Amar Kamat via szetszwo) + + HADOOP-5820. Fix findbugs warnings for http related codes in hdfs. + (szetszwo) + + HADOOP-5822. Fix javac warnings in several dfs tests related to unncessary + casts. (Jakob Homan via szetszwo) + + HADOOP-5842. Fix a few javac warnings under packages fs and util. + (Hairong Kuang via szetszwo) + + HADOOP-5845. Build successful despite test failure on test-core target. + (sharad) + + HADOOP-5314. Prevent unnecessary saving of the file system image during + name-node startup. (Jakob Homan via shv) + + HADOOP-5855. Fix javac warnings for DisallowedDatanodeException and + UnsupportedActionException. (szetszwo) + + HADOOP-5582. Fixes a problem in Hadoop Vaidya to do with reading + counters from job history files. (Suhas Gogate via ddas) + + HADOOP-5829. Fix javac warnings found in ReplicationTargetChooser, + FSImage, Checkpointer, SecondaryNameNode and a few other hdfs classes. + (Suresh Srinivas via szetszwo) + + HADOOP-5835. Fix findbugs warnings found in Block, DataNode, NameNode and + a few other hdfs classes. (Suresh Srinivas via szetszwo) + + HADOOP-5853. Undeprecate HttpServer.addInternalServlet method. (Suresh + Srinivas via szetszwo) + + HADOOP-5801. Fixes the problem: If the hosts file is changed across restart + then it should be refreshed upon recovery so that the excluded hosts are + lost and the maps are re-executed. (Amar Kamat via ddas) + + HADOOP-5841. Resolve findbugs warnings in DistributedFileSystem, + DatanodeInfo, BlocksMap, DataNodeDescriptor. (Jakob Homan via szetszwo) + + HADOOP-5878. Fix import and Serializable javac warnings found in hdfs jsp. + (szetszwo) + + HADOOP-5782. Revert a few formatting changes introduced in HADOOP-5015. + (Suresh Srinivas via rangadi) + + HADOOP-5687. NameNode throws NPE if fs.default.name is the default value. + (Philip Zeyliger via shv) + + HADOOP-5867. Fix javac warnings found in NNBench and NNBenchWithoutMR. + (Konstantin Boudnik via szetszwo) + + HADOOP-5728. Fixed FSEditLog.printStatistics IndexOutOfBoundsException. + (Wang Xu via johan) + + HADOOP-5847. Fixed failing Streaming unit tests (gkesavan) + + HADOOP-5252. Streaming overrides -inputformat option (Klaas Bosteels + via sharad) + + HADOOP-5710. Counter MAP_INPUT_BYTES missing from new mapreduce api. + (Amareshwari Sriramadasu via sharad) + + HADOOP-5809. Fix job submission, broken by errant directory creation. + (Sreekanth Ramakrishnan and Jothi Padmanabhan via cdouglas) + + HADOOP-5635. Change distributed cache to work with other distributed file + systems. (Andrew Hitchcock via tomwhite) + + HADOOP-5856. Fix "unsafe multithreaded use of DateFormat" findbugs warning + in DataBlockScanner. (Kan Zhang via szetszwo) + + HADOOP-4864. Fixes a problem to do with -libjars with multiple jars when + client and cluster reside on different OSs. (Amareshwari Sriramadasu via + ddas) + + HADOOP-5623. Fixes a problem to do with status messages getting overwritten + in streaming jobs. (Rick Cox and Jothi Padmanabhan via ddas) + + HADOOP-5895. Fixes computation of count of merged bytes for logging. + (Ravi Gummadi via ddas) + + HADOOP-5805. problem using top level s3 buckets as input/output + directories. (Ian Nowland via tomwhite) + + HADOOP-5940. trunk eclipse-plugin build fails while trying to copy + commons-cli jar from the lib dir (Giridharan Kesavan via gkesavan) + + HADOOP-5864. Fix DMI and OBL findbugs in packages hdfs and metrics. + (hairong) + + HADOOP-5935. Fix Hudson's release audit warnings link is broken. + (Giridharan Kesavan via gkesavan) + + HADOOP-5947. Delete empty TestCombineFileInputFormat.java + + HADOOP-5899. Move a log message in FSEditLog to the right place for + avoiding unnecessary log. (Suresh Srinivas via szetszwo) + + HADOOP-5944. Add Apache license header to BlockManager.java. (Suresh + Srinivas via szetszwo) + + HADOOP-5891. SecondaryNamenode is able to converse with the NameNode + even when the default value of dfs.http.address is not overridden. + (Todd Lipcon via dhruba) + + HADOOP-5953. The isDirectory(..) and isFile(..) methods in KosmosFileSystem + should not be deprecated. (szetszwo) + + HADOOP-5954. Fix javac warnings in TestFileCreation, TestSmallBlock, + TestFileStatus, TestDFSShellGenericOptions, TestSeekBug and + TestDFSStartupVersions. (szetszwo) + + HADOOP-5956. Fix ivy dependency in hdfsproxy and capacity-scheduler. + (Giridharan Kesavan via szetszwo) + + HADOOP-5836. Bug in S3N handling of directory markers using an object with + a trailing "/" causes jobs to fail. (Ian Nowland via tomwhite) + + HADOOP-5861. s3n files are not getting split by default. (tomwhite) + + HADOOP-5762. Fix a problem that DistCp does not copy empty directory. + (Rodrigo Schmidt via szetszwo) + + HADOOP-5859. Fix "wait() or sleep() with locks held" findbugs warnings in + DFSClient. (Kan Zhang via szetszwo) + + HADOOP-5457. Fix to continue to run builds even if contrib test fails + (Giridharan Kesavan via gkesavan) + + HADOOP-5963. Remove an unnecessary exception catch in NNBench. (Boris + Shkolnik via szetszwo) + + HADOOP-5989. Fix streaming test failure. (gkesavan) + + HADOOP-5981. Fix a bug in HADOOP-2838 in parsing mapred.child.env. + (Amar Kamat via sharad) + + HADOOP-5420. Fix LinuxTaskController to kill tasks using the process + groups they are launched with. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-6031. Remove @author tags from Java source files. (Ravi Phulari + via szetszwo) + + HADOOP-5980. Fix LinuxTaskController so tasks get passed + LD_LIBRARY_PATH and other environment variables. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4041. IsolationRunner does not work as documented. + (Philip Zeyliger via tomwhite) + + HADOOP-6004. Fixes BlockLocation deserialization. (Jakob Homan via + szetszwo) + + HADOOP-6079. Serialize proxySource as DatanodeInfo in DataTransferProtocol. + (szetszwo) + + HADOOP-6096. Fix Eclipse project and classpath files following project + split. (tomwhite) + + HADOOP-6122. The great than operator in test-patch.sh should be "-gt" but + not ">". (szetszwo) + + HADOOP-6114. Fix javadoc documentation for FileStatus.getLen. + (Dmitry Rzhevskiy via dhruba) + + HADOOP-6131. A sysproperty should not be set unless the property + is set on the ant command line in build.xml (hong tang via mahadev) + + HADOOP-6137. Fix project specific test-patch requirements + (Giridharan Kesavan) + + HADOOP-6138. Eliminate the deprecated warnings introduced by H-5438. + (He Yongqiang via szetszwo) + + HADOOP-6132. RPC client create an extra connection because of incorrect + key for connection cache. (Kan Zhang via rangadi) + + HADOOP-6123. Add missing classpaths in hadoop-config.sh. (Sharad Agarwal + via szetszwo) + + HADOOP-6172. Fix jar file names in hadoop-config.sh and include + ${build.src} as a part of the source list in build.xml. (Hong Tang via + szetszwo) + + HADOOP-6124. Fix javac warning detection in test-patch.sh. (Giridharan + Kesavan via szetszwo) + + HADOOP-6177. FSInputChecker.getPos() would return position greater + than the file size. (Hong Tang via hairong) + + HADOOP-6188. TestTrash uses java.io.File api but not hadoop FileSystem api. + (Boris Shkolnik via szetszwo) + + HADOOP-6192. Fix Shell.getUlimitMemoryCommand to not rely on Map-Reduce + specific configs. (acmurthy) + + HADOOP-6103. Clones the classloader as part of Configuration clone. + (Amareshwari Sriramadasu via ddas) + + HADOOP-6152. Fix classpath variables in bin/hadoop-config.sh and some + other scripts. (Aaron Kimball via szetszwo) + + HADOOP-6215. fix GenericOptionParser to deal with -D with '=' in the + value. (Amar Kamat via sharad) + + HADOOP-6227. Fix Configuration to allow final parameters to be set to null + and prevent them from being overridden. + (Amareshwari Sriramadasu via yhemanth) + + HADOOP-6199. Move io.map.skip.index property to core-default from mapred. + (Amareshwari Sriramadasu via cdouglas) + + HADOOP-6229. Attempt to make a directory under an existing file on + LocalFileSystem should throw an Exception. (Boris Shkolnik via tomwhite) + + HADOOP-6243. Fix a NullPointerException in processing deprecated keys. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-6009. S3N listStatus incorrectly returns null instead of empty + array when called on empty root. (Ian Nowland via tomwhite) + + HADOOP-6181. Fix .eclipse.templates/.classpath for avro and jets3t jar + files. (Carlos Valiente via szetszwo) + + HADOOP-6196. Fix a bug in SequenceFile.Reader where syncing within the + header would cause the reader to read the sync marker as a record. (Jay + Booth via cdouglas) + + HADOOP-6250. Modify test-patch to delete copied XML files before running + patch build. (Rahul Kumar Singh via yhemanth) + + HADOOP-6257. Two TestFileSystem classes are confusing + hadoop-hdfs-hdfwithmr. (Philip Zeyliger via tomwhite) + + HADOOP-6151. Added a input filter to all of the http servlets that quotes + html characters in the parameters, to prevent cross site scripting + attacks. (omalley) + + HADOOP-6274. Fix TestLocalFSFileContextMainOperations test failure. + (Gary Murry via suresh). + + HADOOP-6281. Avoid null pointer exceptions when the jsps don't have + paramaters (omalley) + + HADOOP-6285. Fix the result type of the getParameterMap method in the + HttpServer.QuotingInputFilter. (omalley) + + HADOOP-6286. Fix bugs in related to URI handling in glob methods in + FileContext. (Boris Shkolnik via suresh) + + HADOOP-6292. Update native libraries guide. (Corinne Chandel via cdouglas) + + HADOOP-6327. FileContext tests should not use /tmp and should clean up + files. (Sanjay Radia via szetszwo) + + HADOOP-6318. Upgrade to Avro 1.2.0. (cutting) + + HADOOP-6334. Fix GenericOptionsParser to understand URI for -files, + -libjars and -archives options and fix Path to support URI with fragment. + (Amareshwari Sriramadasu via szetszwo) + + HADOOP-6344. Fix rm and rmr immediately delete files rather than sending + to trash, if a user is over-quota. (Jakob Homan via suresh) + + HADOOP-6347. run-test-core-fault-inject runs a test case twice if + -Dtestcase is set (cos) + + HADOOP-6375. Sync documentation for FsShell du with its implementation. + (Todd Lipcon via cdouglas) + + HADOOP-6441. Protect web ui from cross site scripting attacks (XSS) on + the host http header and using encoded utf-7. (omalley) + + HADOOP-6451. Fix build to run contrib unit tests. (Tom White via cdouglas) + + HADOOP-6374. JUnit tests should never depend on anything in conf. + (Anatoli Fomenko via cos) + + HADOOP-6290. Prevent duplicate slf4j-simple jar via Avro's classpath. + (Owen O'Malley via cdouglas) + + HADOOP-6293. Fix FsShell -text to work on filesystems other than the + default. (cdouglas) + + HADOOP-6341. Fix test-patch.sh for checkTests function. (gkesavan) + + HADOOP-6314. Fix "fs -help" for the "-count" commond. (Ravi Phulari via + szetszwo) + + HADOOP-6405. Update Eclipse configuration to match changes to Ivy + configuration (Edwin Chan via cos) + + HADOOP-6411. Remove deprecated file src/test/hadoop-site.xml. (cos) + + HADOOP-6386. NameNode's HttpServer can't instantiate InetSocketAddress: + IllegalArgumentException is thrown (cos) + + HADOOP-6254. Slow reads cause s3n to fail with SocketTimeoutException. + (Andrew Hitchcock via tomwhite) + + HADOOP-6428. HttpServer sleeps with negative values. (cos) + + HADOOP-6414. Add command line help for -expunge command. + (Ravi Phulari via tomwhite) + + HADOOP-6391. Classpath should not be part of command line arguments. + (Cristian Ivascu via tomwhite) + + HADOOP-6462. Target "compile" does not exist in contrib/cloud. (tomwhite) + + HADOOP-6402. testConf.xsl is not well-formed XML. (Steve Loughran + via tomwhite) + + HADOOP-6489. Fix 3 findbugs warnings. (Erik Steffl via suresh) + + HADOOP-6517. Fix UserGroupInformation so that tokens are saved/retrieved + to/from the embedded Subject (Owen O'Malley & Kan Zhang via ddas) + + HADOOP-6538. Sets hadoop.security.authentication to simple by default. + (ddas) + + HADOOP-6540. Contrib unit tests have invalid XML for core-site, etc. + (Aaron Kimball via tomwhite) + + HADOOP-6521. User specified umask using deprecated dfs.umask must override + server configured using new dfs.umaskmode for backward compatibility. + (suresh) + + HADOOP-6522. Fix decoding of codepoint zero in UTF8. (cutting) + + HADOOP-6505. Use tr rather than sed to effect literal substitution in the + build script. (Allen Wittenauer via cdouglas) + + HADOOP-6548. Replace mortbay imports with commons logging. (cdouglas) + + HADOOP-6560. Handle invalid har:// uri in HarFileSystem. (szetszwo) + + HADOOP-6549. TestDoAsEffectiveUser should use ip address of the host + for superuser ip check(jnp via boryas) + + HADOOP-6570. RPC#stopProxy throws NPE if getProxyEngine(proxy) returns + null. (hairong) + + HADOOP-6558. Return null in HarFileSystem.getFileChecksum(..) since no + checksum algorithm is implemented. (szetszwo) + + HADOOP-6572. Makes sure that SASL encryption and push to responder + queue for the RPC response happens atomically. (Kan Zhang via ddas) + + HADOOP-6545. Changes the Key for the FileSystem cache to be UGI (ddas) + + HADOOP-6609. Fixed deadlock in RPC by replacing shared static + DataOutputBuffer in the UTF8 class with a thread local variable. (omalley) + + HADOOP-6504. Invalid example in the documentation of + org.apache.hadoop.util.Tool. (Benoit Sigoure via tomwhite) + + HADOOP-6546. BloomMapFile can return false negatives. (Clark Jefcoat + via tomwhite) + + HADOOP-6593. TextRecordInputStream doesn't close SequenceFile.Reader. + (Chase Bradford via tomwhite) + + HADOOP-6175. Incorrect version compilation with es_ES.ISO8859-15 locale + on Solaris 10. (Urko Benito via tomwhite) + + HADOOP-6645. Bugs on listStatus for HarFileSystem (rodrigo via mahadev) + + HADOOP-6645. Re: Bugs on listStatus for HarFileSystem (rodrigo via + mahadev) + + HADOOP-6654. Fix code example in WritableComparable javadoc. (Tom White + via szetszwo) + + HADOOP-6640. FileSystem.get() does RPC retries within a static + synchronized block. (hairong) + + HADOOP-6691. TestFileSystemCaching sometimes hangs. (hairong) + + HADOOP-6507. Hadoop Common Docs - delete 3 doc files that do not belong + under Common. (Corinne Chandel via tomwhite) + + HADOOP-6439. Fixes handling of deprecated keys to follow order in which + keys are defined. (V.V.Chaitanya Krishna via yhemanth) + + HADOOP-6690. FilterFileSystem correctly handles setTimes call. + (Rodrigo Schmidt via dhruba) + + HADOOP-6703. Prevent renaming a file, directory or symbolic link to + itself. (Eli Collins via suresh) + + HADOOP-6710. Symbolic umask for file creation is not conformant with posix. + (suresh) + + HADOOP-6719. Insert all missing methods in FilterFs. + (Rodrigo Schmidt via dhruba) + + HADOOP-6724. IPC doesn't properly handle IOEs thrown by socket factory. + (Todd Lipcon via tomwhite) + + HADOOP-6722. NetUtils.connect should check that it hasn't connected a socket + to itself. (Todd Lipcon via tomwhite) + + HADOOP-6634. Fix AccessControlList to use short names to verify access + control. (Vinod Kumar Vavilapalli via sharad) + + HADOOP-6709. Re-instate deprecated FileSystem methods that were removed + after 0.20. (tomwhite) + + HADOOP-6630. hadoop-config.sh fails to get executed if hadoop wrapper + scripts are in path. (Allen Wittenauer via tomwhite) + + HADOOP-6742. Add methods HADOOP-6709 from to TestFilterFileSystem. + (Eli Collins via tomwhite) + + HADOOP-6727. Remove UnresolvedLinkException from public FileContext APIs. + (Eli Collins via tomwhite) + + HADOOP-6631. Fix FileUtil.fullyDelete() to continue deleting other files + despite failure at any level. (Contributed by Ravi Gummadi and + Vinod Kumar Vavilapalli) + + HADOOP-6723. Unchecked exceptions thrown in IPC Connection should not + orphan clients. (Todd Lipcon via tomwhite) + + HADOOP-6404. Rename the generated artifacts to common instead of core. + (tomwhite) + + HADOOP-6461. Webapps aren't located correctly post-split. + (Todd Lipcon and Steve Loughran via tomwhite) + + HADOOP-6826. Revert FileSystem create method that takes CreateFlags. + (tomwhite) + + HADOOP-6800. Harmonize JAR library versions. (tomwhite) + + HADOOP-6847. Problem staging 0.21.0 artifacts to Apache Nexus Maven + Repository (Giridharan Kesavan via cos) + + HADOOP-6819. [Herriot] Shell command for getting the new exceptions in + the logs returning exitcode 1 after executing successfully. (Vinay Thota + via cos) + + HADOOP-6839. [Herriot] Implement a functionality for getting the user list + for creating proxy users. (Vinay Thota via cos) + + HADOOP-6836. [Herriot]: Generic method for adding/modifying the attributes + for new configuration. (Vinay Thota via cos) + + HADOOP-6860. 'compile-fault-inject' should never be called directly. + (Konstantin Boudnik) + + HADOOP-6790. Instrumented (Herriot) build uses too wide mask to include + aspect files. (Konstantin Boudnik) + + HADOOP-6875. [Herriot] Cleanup of temp. configurations is needed upon + restart of a cluster (Vinay Thota via cos) + +Release 0.20.3 - Unreleased + + NEW FEATURES + + HADOOP-6637. Benchmark for establishing RPC session. (shv) + + BUG FIXES + + HADOOP-6760. WebServer shouldn't increase port number in case of negative + port setting caused by Jetty's race (cos) + + HADOOP-6881. Make WritableComparator intialize classes when + looking for their raw comparator, as classes often register raw + comparators in initializers, which are no longer automatically run + in Java 6 when a class is referenced. (cutting via omalley) + + HADOOP-7072. Remove java5 dependencies from build. (cos) + +Release 0.20.204.0 - Unreleased + + NEW FEATURES + + HADOOP-6255. Create RPM and Debian packages for common. Changes deployment + layout to be consistent across the binary tgz, rpm, and deb. Adds setup + scripts for easy one node cluster configuration and user creation. + (Eric Yang via omalley) + +Release 0.20.203.0 - 2011-5-11 + + BUG FIXES + + HADOOP-7258. The Gzip codec should not return null decompressors. (omalley) + +Release 0.20.2 - 2010-2-16 + + NEW FEATURES + + HADOOP-6218. Adds a feature where TFile can be split by Record + Sequence number. (Hong Tang and Raghu Angadi via ddas) + + BUG FIXES + + HADOOP-6231. Allow caching of filesystem instances to be disabled on a + per-instance basis. (tomwhite) + + HADOOP-5759. Fix for IllegalArgumentException when CombineFileInputFormat + is used as job InputFormat. (Amareshwari Sriramadasu via dhruba) + + HADOOP-6097. Fix Path conversion in makeQualified and reset LineReader byte + count at the start of each block in Hadoop archives. (Ben Slusky, Tom + White, and Mahadev Konar via cdouglas) + + HADOOP-6269. Fix threading issue with defaultResource in Configuration. + (Sreekanth Ramakrishnan via cdouglas) + + HADOOP-6460. Reinitializes buffers used for serializing responses in ipc + server on exceeding maximum response size to free up Java heap. (suresh) + + HADOOP-6315. Avoid incorrect use of BuiltInflater/BuiltInDeflater in + GzipCodec. (Aaron Kimball via cdouglas) + + HADOOP-6498. IPC client bug may cause rpc call hang. (Ruyue Ma and + hairong via hairong) + + IMPROVEMENTS + + HADOOP-5611. Fix C++ libraries to build on Debian Lenny. (Todd Lipcon + via tomwhite) + + HADOOP-5612. Some c++ scripts are not chmodded before ant execution. + (Todd Lipcon via tomwhite) + + HADOOP-1849. Add undocumented configuration parameter for per handler + call queue size in IPC Server. (shv) + +Release 0.20.1 - 2009-09-01 + + INCOMPATIBLE CHANGES + + HADOOP-5726. Remove pre-emption from capacity scheduler code base. + (Rahul Kumar Singh via yhemanth) + + HADOOP-5881. Simplify memory monitoring and scheduling related + configuration. (Vinod Kumar Vavilapalli via yhemanth) + + NEW FEATURES + + HADOOP-6080. Introduce -skipTrash option to rm and rmr. + (Jakob Homan via shv) + + HADOOP-3315. Add a new, binary file foramt, TFile. (Hong Tang via cdouglas) + + IMPROVEMENTS + + HADOOP-5711. Change Namenode file close log to info. (szetszwo) + + HADOOP-5736. Update the capacity scheduler documentation for features + like memory based scheduling, job initialization and removal of pre-emption. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5714. Add a metric for NameNode getFileInfo operation. (Jakob Homan + via szetszwo) + + HADOOP-4372. Improves the way history filenames are obtained and manipulated. + (Amar Kamat via ddas) + + HADOOP-5897. Add name-node metrics to capture java heap usage. + (Suresh Srinivas via shv) + + OPTIMIZATIONS + + BUG FIXES + + HADOOP-5691. Makes org.apache.hadoop.mapreduce.Reducer concrete class + instead of abstract. (Amareshwari Sriramadasu via sharad) + + HADOOP-5646. Fixes a problem in TestQueueCapacities. + (Vinod Kumar Vavilapalli via ddas) + + HADOOP-5655. TestMRServerPorts fails on java.net.BindException. (Devaraj + Das via hairong) + + HADOOP-5654. TestReplicationPolicy.<init> fails on java.net.BindException. + (hairong) + + HADOOP-5688. Fix HftpFileSystem checksum path construction. (Tsz Wo + (Nicholas) Sze via cdouglas) + + HADOOP-4674. Fix fs help messages for -test, -text, -tail, -stat + and -touchz options. (Ravi Phulari via szetszwo) + + HADOOP-5718. Remove the check for the default queue in capacity scheduler. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5719. Remove jobs that failed initialization from the waiting queue + in the capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4744. Attaching another fix to the jetty port issue. The TaskTracker + kills itself if it ever discovers that the port to which jetty is actually + bound is invalid (-1). (ddas) + + HADOOP-5349. Fixes a problem in LocalDirAllocator to check for the return + path value that is returned for the case where the file we want to write + is of an unknown size. (Vinod Kumar Vavilapalli via ddas) + + HADOOP-5636. Prevents a job from going to RUNNING state after it has been + KILLED (this used to happen when the SetupTask would come back with a + success after the job has been killed). (Amar Kamat via ddas) + + HADOOP-5641. Fix a NullPointerException in capacity scheduler's memory + based scheduling code when jobs get retired. (yhemanth) + + HADOOP-5828. Use absolute path for mapred.local.dir of JobTracker in + MiniMRCluster. (yhemanth) + + HADOOP-4981. Fix capacity scheduler to schedule speculative tasks + correctly in the presence of High RAM jobs. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5210. Solves a problem in the progress report of the reduce task. + (Ravi Gummadi via ddas) + + HADOOP-5850. Fixes a problem to do with not being able to jobs with + 0 maps/reduces. (Vinod K V via ddas) + + HADOOP-4626. Correct the API links in hdfs forrest doc so that they + point to the same version of hadoop. (szetszwo) + + HADOOP-5883. Fixed tasktracker memory monitoring to account for + momentary spurts in memory usage due to java's fork() model. + (yhemanth) + + HADOOP-5539. Fixes a problem to do with not preserving intermediate + output compression for merged data. + (Jothi Padmanabhan and Billy Pearson via ddas) + + HADOOP-5932. Fixes a problem in capacity scheduler in computing + available memory on a tasktracker. + (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-5908. Fixes a problem to do with ArithmeticException in the + JobTracker when there are jobs with 0 maps. (Amar Kamat via ddas) + + HADOOP-5924. Fixes a corner case problem to do with job recovery with + empty history files. Also, after a JT restart, sends KillTaskAction to + tasks that report back but the corresponding job hasn't been initialized + yet. (Amar Kamat via ddas) + + HADOOP-5882. Fixes a reducer progress update problem for new mapreduce + api. (Amareshwari Sriramadasu via sharad) + + HADOOP-5746. Fixes a corner case problem in Streaming, where if an exception + happens in MROutputThread after the last call to the map/reduce method, the + exception goes undetected. (Amar Kamat via ddas) + + HADOOP-5884. Fixes accounting in capacity scheduler so that high RAM jobs + take more slots. (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-5937. Correct a safemode message in FSNamesystem. (Ravi Phulari + via szetszwo) + + HADOOP-5869. Fix bug in assignment of setup / cleanup task that was + causing TestQueueCapacities to fail. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5921. Fixes a problem in the JobTracker where it sometimes never used + to come up due to a system file creation on JobTracker's system-dir failing. + This problem would sometimes show up only when the FS for the system-dir + (usually HDFS) is started at nearly the same time as the JobTracker. + (Amar Kamat via ddas) + + HADOOP-5920. Fixes a testcase failure for TestJobHistory. + (Amar Kamat via ddas) + + HADOOP-6139. Fix the FsShell help messages for rm and rmr. (Jakob Homan + via szetszwo) + + HADOOP-6145. Fix FsShell rm/rmr error messages when there is a FNFE. + (Jakob Homan via szetszwo) + + HADOOP-6150. Users should be able to instantiate comparator using TFile + API. (Hong Tang via rangadi) + +Release 0.20.0 - 2009-04-15 + + INCOMPATIBLE CHANGES + + HADOOP-4210. Fix findbugs warnings for equals implementations of mapred ID + classes. Removed public, static ID::read and ID::forName; made ID an + abstract class. (Suresh Srinivas via cdouglas) + + HADOOP-4253. Fix various warnings generated by findbugs. + Following deprecated methods in RawLocalFileSystem are removed: + public String getName() + public void lock(Path p, boolean shared) + public void release(Path p) + (Suresh Srinivas via johan) + + HADOOP-4618. Move http server from FSNamesystem into NameNode. + FSNamesystem.getNameNodeInfoPort() is removed. + FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort() + replaced by FSNamesystem.getDFSNameNodeAddress(). + NameNode(bindAddress, conf) is removed. + (shv) + + HADOOP-4567. GetFileBlockLocations returns the NetworkTopology + information of the machines where the blocks reside. (dhruba) + + HADOOP-4435. The JobTracker WebUI displays the amount of heap memory + in use. (dhruba) + + HADOOP-4628. Move Hive into a standalone subproject. (omalley) + + HADOOP-4188. Removes task's dependency on concrete filesystems. + (Sharad Agarwal via ddas) + + HADOOP-1650. Upgrade to Jetty 6. (cdouglas) + + HADOOP-3986. Remove static Configuration from JobClient. (Amareshwari + Sriramadasu via cdouglas) + JobClient::setCommandLineConfig is removed + JobClient::getCommandLineConfig is removed + JobShell, TestJobShell classes are removed + + HADOOP-4422. S3 file systems should not create bucket. + (David Phillips via tomwhite) + + HADOOP-4035. Support memory based scheduling in capacity scheduler. + (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-3497. Fix bug in overly restrictive file globbing with a + PathFilter. (tomwhite) + + HADOOP-4445. Replace running task counts with running task + percentage in capacity scheduler UI. (Sreekanth Ramakrishnan via + yhemanth) + + HADOOP-4631. Splits the configuration into three parts - one for core, + one for mapred and the last one for HDFS. (Sharad Agarwal via cdouglas) + + HADOOP-3344. Fix libhdfs build to use autoconf and build the same + architecture (32 vs 64 bit) of the JVM running Ant. The libraries for + pipes, utils, and libhdfs are now all in c++/<os_osarch_jvmdatamodel>/lib. + (Giridharan Kesavan via nigel) + + HADOOP-4874. Remove LZO codec because of licensing issues. (omalley) + + HADOOP-4970. The full path name of a file is preserved inside Trash. + (Prasad Chakka via dhruba) + + HADOOP-4103. NameNode keeps a count of missing blocks. It warns on + WebUI if there are such blocks. '-report' and '-metaSave' have extra + info to track such blocks. (Raghu Angadi) + + HADOOP-4783. Change permissions on history files on the jobtracker + to be only group readable instead of world readable. + (Amareshwari Sriramadasu via yhemanth) + + NEW FEATURES + + HADOOP-4575. Add a proxy service for relaying HsftpFileSystem requests. + Includes client authentication via user certificates and config-based + access control. (Kan Zhang via cdouglas) + + HADOOP-4661. Add DistCh, a new tool for distributed ch{mod,own,grp}. + (szetszwo) + + HADOOP-4709. Add several new features and bug fixes to Chukwa. + Added Hadoop Infrastructure Care Center (UI for visualize data collected + by Chukwa) + Added FileAdaptor for streaming small file in one chunk + Added compression to archive and demux output + Added unit tests and validation for agent, collector, and demux map + reduce job + Added database loader for loading demux output (sequence file) to jdbc + connected database + Added algorithm to distribute collector load more evenly + (Jerome Boulon, Eric Yang, Andy Konwinski, Ariel Rabkin via cdouglas) + + HADOOP-4179. Add Vaidya tool to analyze map/reduce job logs for performanc + problems. (Suhas Gogate via omalley) + + HADOOP-4029. Add NameNode storage information to the dfshealth page and + move DataNode information to a separated page. (Boris Shkolnik via + szetszwo) + + HADOOP-4348. Add service-level authorization for Hadoop. (acmurthy) + + HADOOP-4826. Introduce admin command saveNamespace. (shv) + + HADOOP-3063 BloomMapFile - fail-fast version of MapFile for sparsely + populated key space (Andrzej Bialecki via stack) + + HADOOP-1230. Add new map/reduce API and deprecate the old one. Generally, + the old code should work without problem. The new api is in + org.apache.hadoop.mapreduce and the old classes in org.apache.hadoop.mapred + are deprecated. Differences in the new API: + 1. All of the methods take Context objects that allow us to add new + methods without breaking compatability. + 2. Mapper and Reducer now have a "run" method that is called once and + contains the control loop for the task, which lets applications + replace it. + 3. Mapper and Reducer by default are Identity Mapper and Reducer. + 4. The FileOutputFormats use part-r-00000 for the output of reduce 0 and + part-m-00000 for the output of map 0. + 5. The reduce grouping comparator now uses the raw compare instead of + object compare. + 6. The number of maps in FileInputFormat is controlled by min and max + split size rather than min size and the desired number of maps. + (omalley) + + HADOOP-3305. Use Ivy to manage dependencies. (Giridharan Kesavan + and Steve Loughran via cutting) + + IMPROVEMENTS + + HADOOP-4749. Added a new counter REDUCE_INPUT_BYTES. (Yongqiang He via + zshao) + + HADOOP-4234. Fix KFS "glue" layer to allow applications to interface + with multiple KFS metaservers. (Sriram Rao via lohit) + + HADOOP-4245. Update to latest version of KFS "glue" library jar. + (Sriram Rao via lohit) + + HADOOP-4244. Change test-patch.sh to check Eclipse classpath no matter + it is run by Hudson or not. (szetszwo) + + HADOOP-3180. Add name of missing class to WritableName.getClass + IOException. (Pete Wyckoff via omalley) + + HADOOP-4178. Make the capacity scheduler's default values configurable. + (Sreekanth Ramakrishnan via omalley) + + HADOOP-4262. Generate better error message when client exception has null + message. (stevel via omalley) + + HADOOP-4226. Refactor and document LineReader to make it more readily + understandable. (Yuri Pradkin via cdouglas) + + HADOOP-4238. When listing jobs, if scheduling information isn't available + print NA instead of empty output. (Sreekanth Ramakrishnan via johan) + + HADOOP-4284. Support filters that apply to all requests, or global filters, + to HttpServer. (Kan Zhang via cdouglas) + + HADOOP-4276. Improve the hashing functions and deserialization of the + mapred ID classes. (omalley) + + HADOOP-4485. Add a compile-native ant task, as a shorthand. (enis) + + HADOOP-4454. Allow # comments in slaves file. (Rama Ramasamy via omalley) + + HADOOP-3461. Remove hdfs.StringBytesWritable. (szetszwo) + + HADOOP-4437. Use Halton sequence instead of java.util.Random in + PiEstimator. (szetszwo) + + HADOOP-4572. Change INode and its sub-classes to package private. + (szetszwo) + + HADOOP-4187. Does a runtime lookup for JobConf/JobConfigurable, and if + found, invokes the appropriate configure method. (Sharad Agarwal via ddas) + + HADOOP-4453. Improve ssl configuration and handling in HsftpFileSystem, + particularly when used with DistCp. (Kan Zhang via cdouglas) + + HADOOP-4583. Several code optimizations in HDFS. (Suresh Srinivas via + szetszwo) + + HADOOP-3923. Remove org.apache.hadoop.mapred.StatusHttpServer. (szetszwo) + + HADOOP-4622. Explicitly specify interpretor for non-native + pipes binaries. (Fredrik Hedberg via johan) + + HADOOP-4505. Add a unit test to test faulty setup task and cleanup + task killing the job. (Amareshwari Sriramadasu via johan) + + HADOOP-4608. Don't print a stack trace when the example driver gets an + unknown program to run. (Edward Yoon via omalley) + + HADOOP-4645. Package HdfsProxy contrib project without the extra level + of directories. (Kan Zhang via omalley) + + HADOOP-4126. Allow access to HDFS web UI on EC2 (tomwhite via omalley) + + HADOOP-4612. Removes RunJar's dependency on JobClient. + (Sharad Agarwal via ddas) + + HADOOP-4185. Adds setVerifyChecksum() method to FileSystem. + (Sharad Agarwal via ddas) + + HADOOP-4523. Prevent too many tasks scheduled on a node from bringing + it down by monitoring for cumulative memory usage across tasks. + (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-4640. Adds an input format that can split lzo compressed + text files. (johan) + + HADOOP-4666. Launch reduces only after a few maps have run in the + Fair Scheduler. (Matei Zaharia via johan) + + HADOOP-4339. Remove redundant calls from FileSystem/FsShell when + generating/processing ContentSummary. (David Phillips via cdouglas) + + HADOOP-2774. Add counters tracking records spilled to disk in MapTask and + ReduceTask. (Ravi Gummadi via cdouglas) + + HADOOP-4513. Initialize jobs asynchronously in the capacity scheduler. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4649. Improve abstraction for spill indices. (cdouglas) + + HADOOP-3770. Add gridmix2, an iteration on the gridmix benchmark. (Runping + Qi via cdouglas) + + HADOOP-4708. Add support for dfsadmin commands in TestCLI. (Boris Shkolnik + via cdouglas) + + HADOOP-4758. Add a splitter for metrics contexts to support more than one + type of collector. (cdouglas) + + HADOOP-4722. Add tests for dfsadmin quota error messages. (Boris Shkolnik + via cdouglas) + + HADOOP-4690. fuse-dfs - create source file/function + utils + config + + main source files. (pete wyckoff via mahadev) + + HADOOP-3750. Fix and enforce module dependencies. (Sharad Agarwal via + tomwhite) + + HADOOP-4747. Speed up FsShell::ls by removing redundant calls to the + filesystem. (David Phillips via cdouglas) + + HADOOP-4305. Improves the blacklisting strategy, whereby, tasktrackers + that are blacklisted are not given tasks to run from other jobs, subject + to the following conditions (all must be met): + 1) The TaskTracker has been blacklisted by at least 4 jobs (configurable) + 2) The TaskTracker has been blacklisted 50% more number of times than + the average (configurable) + 3) The cluster has less than 50% trackers blacklisted + Once in 24 hours, a TaskTracker blacklisted for all jobs is given a chance. + Restarting the TaskTracker moves it out of the blacklist. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4688. Modify the MiniMRDFSSort unit test to spill multiple times, + exercising the map-side merge code. (cdouglas) + + HADOOP-4737. Adds the KILLED notification when jobs get killed. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4728. Add a test exercising different namenode configurations. + (Boris Shkolnik via cdouglas) + + HADOOP-4807. Adds JobClient commands to get the active/blacklisted tracker + names. Also adds commands to display running/completed task attempt IDs. + (ddas) + + HADOOP-4699. Remove checksum validation from map output servlet. (cdouglas) + + HADOOP-4838. Added a registry to automate metrics and mbeans management. + (Sanjay Radia via acmurthy) + + HADOOP-3136. Fixed the default scheduler to assign multiple tasks to each + tasktracker per heartbeat, when feasible. To ensure locality isn't hurt + too badly, the scheudler will not assign more than one off-switch task per + heartbeat. The heartbeat interval is also halved since the task-tracker is + fixed to no longer send out heartbeats on each task completion. A + slow-start for scheduling reduces is introduced to ensure that reduces + aren't started till sufficient number of maps are done, else reduces of + jobs whose maps aren't scheduled might swamp the cluster. + Configuration changes to mapred-default.xml: + add mapred.reduce.slowstart.completed.maps + (acmurthy) + + HADOOP-4545. Add example and test case of secondary sort for the reduce. + (omalley) + + HADOOP-4753. Refactor gridmix2 to reduce code duplication. (cdouglas) + + HADOOP-4909. Fix Javadoc and make some of the API more consistent in their + use of the JobContext instead of Configuration. (omalley) + + HADOOP-4920. Stop storing Forrest output in Subversion. (cutting) + + HADOOP-4948. Add parameters java5.home and forrest.home to the ant commands + in test-patch.sh. (Giridharan Kesavan via szetszwo) + + HADOOP-4830. Add end-to-end test cases for testing queue capacities. + (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-4980. Improve code layout of capacity scheduler to make it + easier to fix some blocker bugs. (Vivek Ratan via yhemanth) + + HADOOP-4916. Make user/location of Chukwa installation configurable by an + external properties file. (Eric Yang via cdouglas) + + HADOOP-4950. Make the CompressorStream, DecompressorStream, + BlockCompressorStream, and BlockDecompressorStream public to facilitate + non-Hadoop codecs. (omalley) + + HADOOP-4843. Collect job history and configuration in Chukwa. (Eric Yang + via cdouglas) + + HADOOP-5030. Build Chukwa RPM to install into configured directory. (Eric + Yang via cdouglas) + + HADOOP-4828. Updates documents to do with configuration (HADOOP-4631). + (Sharad Agarwal via ddas) + + HADOOP-4939. Adds a test that would inject random failures for tasks in + large jobs and would also inject TaskTracker failures. (ddas) + + HADOOP-4944. A configuration file can include other configuration + files. (Rama Ramasamy via dhruba) + + HADOOP-4804. Provide Forrest documentation for the Fair Scheduler. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-5248. A testcase that checks for the existence of job directory + after the job completes. Fails if it exists. (ddas) + + HADOOP-4664. Introduces multiple job initialization threads, where the + number of threads are configurable via mapred.jobinit.threads. + (Matei Zaharia and Jothi Padmanabhan via ddas) + + HADOOP-4191. Adds a testcase for JobHistory. (Ravi Gummadi via ddas) + + HADOOP-5466. Change documenation CSS style for headers and code. (Corinne + Chandel via szetszwo) + + HADOOP-5275. Add ivy directory and files to built tar. + (Giridharan Kesavan via nigel) + + HADOOP-5468. Add sub-menus to forrest documentation and make some minor + edits. (Corinne Chandel via szetszwo) + + HADOOP-5437. Fix TestMiniMRDFSSort to properly test jvm-reuse. (omalley) + + HADOOP-5521. Removes dependency of TestJobInProgress on RESTART_COUNT + JobHistory tag. (Ravi Gummadi via ddas) + + OPTIMIZATIONS + + HADOOP-3293. Fixes FileInputFormat to do provide locations for splits + based on the rack/host that has the most number of bytes. + (Jothi Padmanabhan via ddas) + + HADOOP-4683. Fixes Reduce shuffle scheduler to invoke + getMapCompletionEvents in a separate thread. (Jothi Padmanabhan + via ddas) + + BUG FIXES + + HADOOP-4204. Fix findbugs warnings related to unused variables, naive + Number subclass instantiation, Map iteration, and badly scoped inner + classes. (Suresh Srinivas via cdouglas) + + HADOOP-4207. Update derby jar file to release 10.4.2 release. + (Prasad Chakka via dhruba) + + HADOOP-4325. SocketInputStream.read() should return -1 in case EOF. + (Raghu Angadi) + + HADOOP-4408. FsAction functions need not create new objects. (cdouglas) + + HADOOP-4440. TestJobInProgressListener tests for jobs killed in queued + state (Amar Kamat via ddas) + + HADOOP-4346. Implement blocking connect so that Hadoop is not affected + by selector problem with JDK default implementation. (Raghu Angadi) + + HADOOP-4388. If there are invalid blocks in the transfer list, Datanode + should handle them and keep transferring the remaining blocks. (Suresh + Srinivas via szetszwo) + + HADOOP-4587. Fix a typo in Mapper javadoc. (Koji Noguchi via szetszwo) + + HADOOP-4530. In fsck, HttpServletResponse sendError fails with + IllegalStateException. (hairong) + + HADOOP-4377. Fix a race condition in directory creation in + NativeS3FileSystem. (David Phillips via cdouglas) + + HADOOP-4621. Fix javadoc warnings caused by duplicate jars. (Kan Zhang via + cdouglas) + + HADOOP-4566. Deploy new hive code to support more types. + (Zheng Shao via dhruba) + + HADOOP-4571. Add chukwa conf files to svn:ignore list. (Eric Yang via + szetszwo) + + HADOOP-4589. Correct PiEstimator output messages and improve the code + readability. (szetszwo) + + HADOOP-4650. Correct a mismatch between the default value of + local.cache.size in the config and the source. (Jeff Hammerbacher via + cdouglas) + + HADOOP-4606. Fix cygpath error if the log directory does not exist. + (szetszwo via omalley) + + HADOOP-4141. Fix bug in ScriptBasedMapping causing potential infinite + loop on misconfigured hadoop-site. (Aaron Kimball via tomwhite) + + HADOOP-4691. Correct a link in the javadoc of IndexedSortable. (szetszwo) + + HADOOP-4598. '-setrep' command skips under-replicated blocks. (hairong) + + HADOOP-4429. Set defaults for user, group in UnixUserGroupInformation so + login fails more predictably when misconfigured. (Alex Loddengaard via + cdouglas) + + HADOOP-4676. Fix broken URL in blacklisted tasktrackers page. (Amareshwari + Sriramadasu via cdouglas) + + HADOOP-3422 Ganglia counter metrics are all reported with the metric + name "value", so the counter values can not be seen. (Jason Attributor + and Brian Bockelman via stack) + + HADOOP-4704. Fix javadoc typos "the the". (szetszwo) + + HADOOP-4677. Fix semantics of FileSystem::getBlockLocations to return + meaningful values. (Hong Tang via cdouglas) + + HADOOP-4669. Use correct operator when evaluating whether access time is + enabled (Dhruba Borthakur via cdouglas) + + HADOOP-4732. Pass connection and read timeouts in the correct order when + setting up fetch in reduce. (Amareshwari Sriramadasu via cdouglas) + + HADOOP-4558. Fix capacity reclamation in capacity scheduler. + (Amar Kamat via yhemanth) + + HADOOP-4770. Fix rungridmix_2 script to work with RunJar. (cdouglas) + + HADOOP-4738. When using git, the saveVersion script will use only the + commit hash for the version and not the message, which requires escaping. + (cdouglas) + + HADOOP-4576. Show pending job count instead of task count in the UI per + queue in capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4623. Maintain running tasks even if speculative execution is off. + (Amar Kamat via yhemanth) + + HADOOP-4786. Fix broken compilation error in + TestTrackerBlacklistAcrossJobs. (yhemanth) + + HADOOP-4785. Fixes theJobTracker heartbeat to not make two calls to + System.currentTimeMillis(). (Amareshwari Sriramadasu via ddas) + + HADOOP-4792. Add generated Chukwa configuration files to version control + ignore lists. (cdouglas) + + HADOOP-4796. Fix Chukwa test configuration, remove unused components. (Eric + Yang via cdouglas) + + HADOOP-4708. Add binaries missed in the initial checkin for Chukwa. (Eric + Yang via cdouglas) + + HADOOP-4805. Remove black list collector from Chukwa Agent HTTP Sender. + (Eric Yang via cdouglas) + + HADOOP-4837. Move HADOOP_CONF_DIR configuration to chukwa-env.sh (Jerome + Boulon via cdouglas) + + HADOOP-4825. Use ps instead of jps for querying process status in Chukwa. + (Eric Yang via cdouglas) + + HADOOP-4844. Fixed javadoc for + org.apache.hadoop.fs.permission.AccessControlException to document that + it's deprecated in favour of + org.apache.hadoop.security.AccessControlException. (acmurthy) + + HADOOP-4706. Close the underlying output stream in + IFileOutputStream::close. (Jothi Padmanabhan via cdouglas) + + HADOOP-4855. Fixed command-specific help messages for refreshServiceAcl in + DFSAdmin and MRAdmin. (acmurthy) + + HADOOP-4820. Remove unused method FSNamesystem::deleteInSafeMode. (Suresh + Srinivas via cdouglas) + + HADOOP-4698. Lower io.sort.mb to 10 in the tests and raise the junit memory + limit to 512m from 256m. (Nigel Daley via cdouglas) + + HADOOP-4860. Split TestFileTailingAdapters into three separate tests to + avoid contention. (Eric Yang via cdouglas) + + HADOOP-3921. Fixed clover (code coverage) target to work with JDK 6. + (tomwhite via nigel) + + HADOOP-4845. Modify the reduce input byte counter to record only the + compressed size and add a human-readable label. (Yongqiang He via cdouglas) + + HADOOP-4458. Add a test creating symlinks in the working directory. + (Amareshwari Sriramadasu via cdouglas) + + HADOOP-4879. Fix org.apache.hadoop.mapred.Counters to correctly define + Object.equals rather than depend on contentEquals api. (omalley via + acmurthy) + + HADOOP-4791. Fix rpm build process for Chukwa. (Eric Yang via cdouglas) + + HADOOP-4771. Correct initialization of the file count for directories + with quotas. (Ruyue Ma via shv) + + HADOOP-4878. Fix eclipse plugin classpath file to point to ivy's resolved + lib directory and added the same to test-patch.sh. (Giridharan Kesavan via + acmurthy) + + HADOOP-4774. Fix default values of some capacity scheduler configuration + items which would otherwise not work on a fresh checkout. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4876. Fix capacity scheduler reclamation by updating count of + pending tasks correctly. (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4849. Documentation for Service Level Authorization implemented in + HADOOP-4348. (acmurthy) + + HADOOP-4827. Replace Consolidator with Aggregator macros in Chukwa (Eric + Yang via cdouglas) + + HADOOP-4894. Correctly parse ps output in Chukwa jettyCollector.sh. (Ari + Rabkin via cdouglas) + + HADOOP-4892. Close fds out of Chukwa ExecPlugin. (Ari Rabkin via cdouglas) + + HADOOP-4889. Fix permissions in RPM packaging. (Eric Yang via cdouglas) + + HADOOP-4869. Fixes the TT-JT heartbeat to have an explicit flag for + restart apart from the initialContact flag that there was earlier. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4716. Fixes ReduceTask.java to clear out the mapping between + hosts and MapOutputLocation upon a JT restart (Amar Kamat via ddas) + + HADOOP-4880. Removes an unnecessary testcase from TestJobTrackerRestart. + (Amar Kamat via ddas) + + HADOOP-4924. Fixes a race condition in TaskTracker re-init. (ddas) + + HADOOP-4854. Read reclaim capacity interval from capacity scheduler + configuration. (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4896. HDFS Fsck does not load HDFS configuration. (Raghu Angadi) + + HADOOP-4956. Creates TaskStatus for failed tasks with an empty Counters + object instead of null. (ddas) + + HADOOP-4979. Fix capacity scheduler to block cluster for failed high + RAM requirements across task types. (Vivek Ratan via yhemanth) + + HADOOP-4949. Fix native compilation. (Chris Douglas via acmurthy) + + HADOOP-4787. Fixes the testcase TestTrackerBlacklistAcrossJobs which was + earlier failing randomly. (Amareshwari Sriramadasu via ddas) + + HADOOP-4914. Add description fields to Chukwa init.d scripts (Eric Yang via + cdouglas) + + HADOOP-4884. Make tool tip date format match standard HICC format. (Eric + Yang via cdouglas) + + HADOOP-4925. Make Chukwa sender properties configurable. (Ari Rabkin via + cdouglas) + + HADOOP-4947. Make Chukwa command parsing more forgiving of whitespace. (Ari + Rabkin via cdouglas) + + HADOOP-5026. Make chukwa/bin scripts executable in repository. (Andy + Konwinski via cdouglas) + + HADOOP-4977. Fix a deadlock between the reclaimCapacity and assignTasks + in capacity scheduler. (Vivek Ratan via yhemanth) + + HADOOP-4988. Fix reclaim capacity to work even when there are queues with + no capacity. (Vivek Ratan via yhemanth) + + HADOOP-5065. Remove generic parameters from argument to + setIn/OutputFormatClass so that it works with SequenceIn/OutputFormat. + (cdouglas via omalley) + + HADOOP-4818. Pass user config to instrumentation API. (Eric Yang via + cdouglas) + + HADOOP-4993. Fix Chukwa agent configuration and startup to make it both + more modular and testable. (Ari Rabkin via cdouglas) + + HADOOP-5048. Fix capacity scheduler to correctly cleanup jobs that are + killed after initialization, but before running. + (Sreekanth Ramakrishnan via yhemanth) + + HADOOP-4671. Mark loop control variables shared between threads as + volatile. (cdouglas) + + HADOOP-5079. HashFunction inadvertently destroys some randomness + (Jonathan Ellis via stack) + + HADOOP-4999. A failure to write to FsEditsLog results in + IndexOutOfBounds exception. (Boris Shkolnik via rangadi) + + HADOOP-5139. Catch IllegalArgumentException during metrics registration + in RPC. (Hairong Kuang via szetszwo) + + HADOOP-5085. Copying a file to local with Crc throws an exception. + (hairong) + + HADOOP-5211. Fix check for job completion in TestSetupAndCleanupFailure. + (enis) + + HADOOP-5254. The Configuration class should be able to work with XML + parsers that do not support xmlinclude. (Steve Loughran via dhruba) + + HADOOP-4692. Namenode in infinite loop for replicating/deleting corrupt + blocks. (hairong) + + HADOOP-5255. Fix use of Math.abs to avoid overflow. (Jonathan Ellis via + cdouglas) + + HADOOP-5269. Fixes a problem to do with tasktracker holding on to + FAILED_UNCLEAN or KILLED_UNCLEAN tasks forever. (Amareshwari Sriramadasu + via ddas) + + HADOOP-5214. Fixes a ConcurrentModificationException while the Fairshare + Scheduler accesses the tasktrackers stored by the JobTracker. + (Rahul Kumar Singh via yhemanth) + + HADOOP-5233. Addresses the three issues - Race condition in updating + status, NPE in TaskTracker task localization when the conf file is missing + (HADOOP-5234) and NPE in handling KillTaskAction of a cleanup task + (HADOOP-5235). (Amareshwari Sriramadasu via ddas) + + HADOOP-5247. Introduces a broadcast of KillJobAction to all trackers when + a job finishes. This fixes a bunch of problems to do with NPE when a + completed job is not in memory and a tasktracker comes to the jobtracker + with a status report of a task belonging to that job. (Amar Kamat via ddas) + + HADOOP-5282. Fixed job history logs for task attempts that are + failed by the JobTracker, say due to lost task trackers. (Amar + Kamat via yhemanth) + + HADOOP-5241. Fixes a bug in disk-space resource estimation. Makes + the estimation formula linear where blowUp = + Total-Output/Total-Input. (Sharad Agarwal via ddas) + + HADOOP-5142. Fix MapWritable#putAll to store key/value classes. + (Do??acan G??ney via enis) + + HADOOP-4744. Workaround for jetty6 returning -1 when getLocalPort + is invoked on the connector. The workaround patch retries a few + times before failing. (Jothi Padmanabhan via yhemanth) + + HADOOP-5280. Adds a check to prevent a task state transition from + FAILED to any of UNASSIGNED, RUNNING, COMMIT_PENDING or + SUCCEEDED. (ddas) + + HADOOP-5272. Fixes a problem to do with detecting whether an + attempt is the first attempt of a Task. This affects JobTracker + restart. (Amar Kamat via ddas) + + HADOOP-5306. Fixes a problem to do with logging/parsing the http port of a + lost tracker. Affects JobTracker restart. (Amar Kamat via ddas) + + HADOOP-5111. Fix Job::set* methods to work with generics. (cdouglas) + + HADOOP-5274. Fix gridmix2 dependency on wordcount example. (cdouglas) + + HADOOP-5145. Balancer sometimes runs out of memory after running + days or weeks. (hairong) + + HADOOP-5338. Fix jobtracker restart to clear task completion + events cached by tasktrackers forcing them to fetch all events + afresh, thus avoiding missed task completion events on the + tasktrackers. (Amar Kamat via yhemanth) + + HADOOP-4695. Change TestGlobalFilter so that it allows a web page to be + filtered more than once for a single access. (Kan Zhang via szetszwo) + + HADOOP-5298. Change TestServletFilter so that it allows a web page to be + filtered more than once for a single access. (szetszwo) + + HADOOP-5432. Disable ssl during unit tests in hdfsproxy, as it is unused + and causes failures. (cdouglas) + + HADOOP-5416. Correct the shell command "fs -test" forrest doc description. + (Ravi Phulari via szetszwo) + + HADOOP-5327. Fixed job tracker to remove files from system directory on + ACL check failures and also check ACLs on restart. + (Amar Kamat via yhemanth) + + HADOOP-5395. Change the exception message when a job is submitted to an + invalid queue. (Rahul Kumar Singh via yhemanth) + + HADOOP-5276. Fixes a problem to do with updating the start time of + a task when the tracker that ran the task is lost. (Amar Kamat via + ddas) + + HADOOP-5278. Fixes a problem to do with logging the finish time of + a task during recovery (after a JobTracker restart). (Amar Kamat + via ddas) + + HADOOP-5490. Fixes a synchronization problem in the + EagerTaskInitializationListener class. (Jothi Padmanabhan via + ddas) + + HADOOP-5493. The shuffle copier threads return the codecs back to + the pool when the shuffle completes. (Jothi Padmanabhan via ddas) + + HADOOP-5414. Fixes IO exception while executing hadoop fs -touchz + fileName by making sure that lease renewal thread exits before dfs + client exits. (hairong) + + HADOOP-5103. FileInputFormat now reuses the clusterMap network + topology object and that brings down the log messages in the + JobClient to do with NetworkTopology.add significantly. (Jothi + Padmanabhan via ddas) + + HADOOP-5483. Fixes a problem in the Directory Cleanup Thread due to which + TestMiniMRWithDFS sometimes used to fail. (ddas) + + HADOOP-5281. Prevent sharing incompatible ZlibCompressor instances between + GzipCodec and DefaultCodec. (cdouglas) + + HADOOP-5463. Balancer throws "Not a host:port pair" unless port is + specified in fs.default.name. (Stuart White via hairong) + + HADOOP-5514. Fix JobTracker metrics and add metrics for wating, failed + tasks. (cdouglas) + + HADOOP-5516. Fix NullPointerException in TaskMemoryManagerThread + that comes when monitored processes disappear when the thread is + running. (Vinod Kumar Vavilapalli via yhemanth) + + HADOOP-5382. Support combiners in the new context object API. (omalley) + + HADOOP-5471. Fixes a problem to do with updating the log.index file in the + case where a cleanup task is run. (Amareshwari Sriramadasu via ddas) + + HADOOP-5534. Fixed a deadlock in Fair scheduler's servlet. + (Rahul Kumar Singh via yhemanth) + + HADOOP-5328. Fixes a problem in the renaming of job history files during + job recovery. (Amar Kamat via ddas) + + HADOOP-5417. Don't ignore InterruptedExceptions that happen when calling + into rpc. (omalley) + + HADOOP-5320. Add a close() in TestMapReduceLocal. (Jothi Padmanabhan + via szetszwo) + + HADOOP-5520. Fix a typo in disk quota help message. (Ravi Phulari + via szetszwo) + + HADOOP-5519. Remove claims from mapred-default.xml that prime numbers + of tasks are helpful. (Owen O'Malley via szetszwo) + + HADOOP-5484. TestRecoveryManager fails wtih FileAlreadyExistsException. + (Amar Kamat via hairong) + + HADOOP-5564. Limit the JVM heap size in the java command for initializing + JAVA_PLATFORM. (Suresh Srinivas via szetszwo) + + HADOOP-5565. Add API for failing/finalized jobs to the JT metrics + instrumentation. (Jerome Boulon via cdouglas) + + HADOOP-5390. Remove duplicate jars from tarball, src from binary tarball + added by hdfsproxy. (Zhiyong Zhang via cdouglas) + + HADOOP-5066. Building binary tarball should not build docs/javadocs, copy + src, or run jdiff. (Giridharan Kesavan via cdouglas) + + HADOOP-5459. Fix undetected CRC errors where intermediate output is closed + before it has been completely consumed. (cdouglas) + + HADOOP-5571. Remove widening primitive conversion in TupleWritable mask + manipulation. (Jingkei Ly via cdouglas) + + HADOOP-5588. Remove an unnecessary call to listStatus(..) in + FileSystem.globStatusInternal(..). (Hairong Kuang via szetszwo) + + HADOOP-5473. Solves a race condition in killing a task - the state is KILLED + if there is a user request pending to kill the task and the TT reported + the state as SUCCESS. (Amareshwari Sriramadasu via ddas) + + HADOOP-5576. Fix LocalRunner to work with the new context object API in + mapreduce. (Tom White via omalley) + + HADOOP-4374. Installs a shutdown hook in the Task JVM so that log.index is + updated before the JVM exits. Also makes the update to log.index atomic. + (Ravi Gummadi via ddas) + + HADOOP-5577. Add a verbose flag to mapreduce.Job.waitForCompletion to get + the running job's information printed to the user's stdout as it runs. + (omalley) + + HADOOP-5607. Fix NPE in TestCapacityScheduler. (cdouglas) + + HADOOP-5605. All the replicas incorrectly got marked as corrupt. (hairong) + + HADOOP-5337. JobTracker, upon restart, now waits for the TaskTrackers to + join back before scheduling new tasks. This fixes race conditions associated + with greedy scheduling as was the case earlier. (Amar Kamat via ddas) + + HADOOP-5227. Fix distcp so -update and -delete can be meaningfully + combined. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-5305. Increase number of files and print debug messages in + TestCopyFiles. (szetszwo) + + HADOOP-5548. Add synchronization for JobTracker methods in RecoveryManager. + (Amareshwari Sriramadasu via sharad) + + HADOOP-3810. NameNode seems unstable on a cluster with little space left. + (hairong) + + HADOOP-5068. Fix NPE in TestCapacityScheduler. (Vinod Kumar Vavilapalli + via szetszwo) + + HADOOP-5585. Clear FileSystem statistics between tasks when jvm-reuse + is enabled. (omalley) + + HADOOP-5394. JobTracker might schedule 2 attempts of the same task + with the same attempt id across restarts. (Amar Kamat via sharad) + + HADOOP-5645. After HADOOP-4920 we need a place to checkin + releasenotes.html. (nigel) + +Release 0.19.2 - 2009-06-30 + + BUG FIXES + + HADOOP-5154. Fixes a deadlock in the fairshare scheduler. + (Matei Zaharia via yhemanth) + + HADOOP-5146. Fixes a race condition that causes LocalDirAllocator to miss + files. (Devaraj Das via yhemanth) + + HADOOP-4638. Fixes job recovery to not crash the job tracker for problems + with a single job file. (Amar Kamat via yhemanth) + + HADOOP-5384. Fix a problem that DataNodeCluster creates blocks with + generationStamp == 1. (szetszwo) + + HADOOP-5376. Fixes the code handling lost tasktrackers to set the task state + to KILLED_UNCLEAN only for relevant type of tasks. + (Amareshwari Sriramadasu via yhemanth) + + HADOOP-5285. Fixes the issues - (1) obtainTaskCleanupTask checks whether job is + inited before trying to lock the JobInProgress (2) Moves the CleanupQueue class + outside the TaskTracker and makes it a generic class that is used by the + JobTracker also for deleting the paths on the job's output fs. (3) Moves the + references to completedJobStore outside the block where the JobTracker is locked. + (ddas) + + HADOOP-5392. Fixes a problem to do with JT crashing during recovery when + the job files are garbled. (Amar Kamat via ddas) + + HADOOP-5332. Appending to files is not allowed (by default) unless + dfs.support.append is set to true. (dhruba) + + HADOOP-5333. libhdfs supports appending to files. (dhruba) + + HADOOP-3998. Fix dfsclient exception when JVM is shutdown. (dhruba) + + HADOOP-5440. Fixes a problem to do with removing a taskId from the list + of taskIds that the TaskTracker's TaskMemoryManager manages. + (Amareshwari Sriramadasu via ddas) + + HADOOP-5446. Restore TaskTracker metrics. (cdouglas) + + HADOOP-5449. Fixes the history cleaner thread. + (Amareshwari Sriramadasu via ddas) + + HADOOP-5479. NameNode should not send empty block replication request to + DataNode. (hairong) + + HADOOP-5259. Job with output hdfs:/user/<username>/outputpath (no + authority) fails with Wrong FS. (Doug Cutting via hairong) + + HADOOP-5522. Documents the setup/cleanup tasks in the mapred tutorial. + (Amareshwari Sriramadasu via ddas) + + HADOOP-5549. ReplicationMonitor should schedule both replication and + deletion work in one iteration. (hairong) + + HADOOP-5554. DataNodeCluster and CreateEditsLog should create blocks with + the same generation stamp value. (hairong via szetszwo) + + HADOOP-5231. Clones the TaskStatus before passing it to the JobInProgress. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4719. Fix documentation of 'ls' format for FsShell. (Ravi Phulari + via cdouglas) + + HADOOP-5374. Fixes a NPE problem in getTasksToSave method. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4780. Cache the size of directories in DistributedCache, avoiding + long delays in recalculating it. (He Yongqiang via cdouglas) + + HADOOP-5551. Prevent directory destruction on file create. + (Brian Bockelman via shv) + + HADOOP-5671. Fix FNF exceptions when copying from old versions of + HftpFileSystem. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-5213. Fix Null pointer exception caused when bzip2compression + was used and user closed a output stream without writing any data. + (Zheng Shao via dhruba) + + HADOOP-5579. Set errno correctly in libhdfs for permission, quota, and FNF + conditions. (Brian Bockelman via cdouglas) + + HADOOP-5816. Fixes a problem in the KeyFieldBasedComparator to do with + ArrayIndexOutOfBounds exception. (He Yongqiang via ddas) + + HADOOP-5951. Add Apache license header to StorageInfo.java. (Suresh + Srinivas via szetszwo) + +Release 0.19.1 - 2009-02-23 + + IMPROVEMENTS + + HADOOP-4739. Fix spelling and grammar, improve phrasing of some sections in + mapred tutorial. (Vivek Ratan via cdouglas) + + HADOOP-3894. DFSClient logging improvements. (Steve Loughran via shv) + + HADOOP-5126. Remove empty file BlocksWithLocations.java (shv) + + HADOOP-5127. Remove public methods in FSDirectory. (Jakob Homan via shv) + + BUG FIXES + + HADOOP-4697. Fix getBlockLocations in KosmosFileSystem to handle multiple + blocks correctly. (Sriram Rao via cdouglas) + + HADOOP-4420. Add null checks for job, caused by invalid job IDs. + (Aaron Kimball via tomwhite) + + HADOOP-4632. Fix TestJobHistoryVersion to use test.build.dir instead of the + current workding directory for scratch space. (Amar Kamat via cdouglas) + + HADOOP-4508. Fix FSDataOutputStream.getPos() for append. (dhruba via + szetszwo) + + HADOOP-4727. Fix a group checking bug in fill_stat_structure(...) in + fuse-dfs. (Brian Bockelman via szetszwo) + + HADOOP-4836. Correct typos in mapred related documentation. (Jord? Polo + via szetszwo) + + HADOOP-4821. Usage description in the Quotas guide documentations are + incorrect. (Boris Shkolnik via hairong) + + HADOOP-4847. Moves the loading of OutputCommitter to the Task. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4966. Marks completed setup tasks for removal. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4982. TestFsck should run in Eclipse. (shv) + + HADOOP-5008. TestReplication#testPendingReplicationRetry leaves an opened + fd unclosed. (hairong) + + HADOOP-4906. Fix TaskTracker OOM by keeping a shallow copy of JobConf in + TaskTracker.TaskInProgress. (Sharad Agarwal via acmurthy) + + HADOOP-4918. Fix bzip2 compression to work with Sequence Files. + (Zheng Shao via dhruba). + + HADOOP-4965. TestFileAppend3 should close FileSystem. (shv) + + HADOOP-4967. Fixes a race condition in the JvmManager to do with killing + tasks. (ddas) + + HADOOP-5009. DataNode#shutdown sometimes leaves data block scanner + verification log unclosed. (hairong) + + HADOOP-5086. Use the appropriate FileSystem for trash URIs. (cdouglas) + + HADOOP-4955. Make DBOutputFormat us column names from setOutput(). + (Kevin Peterson via enis) + + HADOOP-4862. Minor : HADOOP-3678 did not remove all the cases of + spurious IOExceptions logged by DataNode. (Raghu Angadi) + + HADOOP-5034. NameNode should send both replication and deletion requests + to DataNode in one reply to a heartbeat. (hairong) + + HADOOP-4759. Removes temporary output directory for failed and killed + tasks by launching special CLEANUP tasks for the same. + (Amareshwari Sriramadasu via ddas) + + HADOOP-5161. Accepted sockets do not get placed in + DataXceiverServer#childSockets. (hairong) + + HADOOP-5193. Correct calculation of edits modification time. (shv) + + HADOOP-4494. Allow libhdfs to append to files. + (Pete Wyckoff via dhruba) + + HADOOP-5166. Fix JobTracker restart to work when ACLs are configured + for the JobTracker. (Amar Kamat via yhemanth). + + HADOOP-5067. Fixes TaskInProgress.java to keep track of count of failed and + killed tasks correctly. (Amareshwari Sriramadasu via ddas) + + HADOOP-4760. HDFS streams should not throw exceptions when closed twice. + (enis) + +Release 0.19.0 - 2008-11-18 + + INCOMPATIBLE CHANGES + + HADOOP-3595. Remove deprecated methods for mapred.combine.once + functionality, which was necessary to providing backwards + compatible combiner semantics for 0.18. (cdouglas via omalley) + + HADOOP-3667. Remove the following deprecated methods from JobConf: + addInputPath(Path) + getInputPaths() + getMapOutputCompressionType() + getOutputPath() + getSystemDir() + setInputPath(Path) + setMapOutputCompressionType(CompressionType style) + setOutputPath(Path) + (Amareshwari Sriramadasu via omalley) + + HADOOP-3652. Remove deprecated class OutputFormatBase. + (Amareshwari Sriramadasu via cdouglas) + + HADOOP-2885. Break the hadoop.dfs package into separate packages under + hadoop.hdfs that reflect whether they are client, server, protocol, + etc. DistributedFileSystem and DFSClient have moved and are now + considered package private. (Sanjay Radia via omalley) + + HADOOP-2325. Require Java 6. (cutting) + + HADOOP-372. Add support for multiple input paths with a different + InputFormat and Mapper for each path. (Chris Smith via tomwhite) + + HADOOP-1700. Support appending to file in HDFS. (dhruba) + + HADOOP-3792. Make FsShell -test consistent with unix semantics, returning + zero for true and non-zero for false. (Ben Slusky via cdouglas) + + HADOOP-3664. Remove the deprecated method InputFormat.validateInput, + which is no longer needed. (tomwhite via omalley) + + HADOOP-3549. Give more meaningful errno's in libhdfs. In particular, + EACCES is returned for permission problems. (Ben Slusky via omalley) + + HADOOP-4036. ResourceStatus was added to TaskTrackerStatus by HADOOP-3759, + so increment the InterTrackerProtocol version. (Hemanth Yamijala via + omalley) + + HADOOP-3150. Moves task promotion to tasks. Defines a new interface for + committing output files. Moves job setup to jobclient, and moves jobcleanup + to a separate task. (Amareshwari Sriramadasu via ddas) + + HADOOP-3446. Keep map outputs in memory during the reduce. Remove + fs.inmemory.size.mb and replace with properties defining in memory map + output retention during the shuffle and reduce relative to maximum heap + usage. (cdouglas) + + HADOOP-3245. Adds the feature for supporting JobTracker restart. Running + jobs can be recovered from the history file. The history file format has + been modified to support recovery. The task attempt ID now has the + JobTracker start time to disinguish attempts of the same TIP across + restarts. (Amar Ramesh Kamat via ddas) + + HADOOP-4007. REMOVE DFSFileInfo - FileStatus is sufficient. + (Sanjay Radia via hairong) + + HADOOP-3722. Fixed Hadoop Streaming and Hadoop Pipes to use the Tool + interface and GenericOptionsParser. (Enis Soztutar via acmurthy) + + HADOOP-2816. Cluster summary at name node web reports the space + utilization as: + Configured Capacity: capacity of all the data directories - Reserved space + Present Capacity: Space available for dfs,i.e. remaining+used space + DFS Used%: DFS used space/Present Capacity + (Suresh Srinivas via hairong) + + HADOOP-3938. Disk space quotas for HDFS. This is similar to namespace + quotas in 0.18. (rangadi) + + HADOOP-4293. Make Configuration Writable and remove unreleased + WritableJobConf. Configuration.write is renamed to writeXml. (omalley) + + HADOOP-4281. Change dfsadmin to report available disk space in a format + consistent with the web interface as defined in HADOOP-2816. (Suresh + Srinivas via cdouglas) + + HADOOP-4430. Further change the cluster summary at name node web that was + changed in HADOOP-2816: + Non DFS Used - This indicates the disk space taken by non DFS file from + the Configured capacity + DFS Used % - DFS Used % of Configured Capacity + DFS Remaining % - Remaing % Configured Capacity available for DFS use + DFS command line report reflects the same change. Config parameter + dfs.datanode.du.pct is no longer used and is removed from the + hadoop-default.xml. (Suresh Srinivas via hairong) + + HADOOP-4116. Balancer should provide better resource management. (hairong) + + HADOOP-4599. BlocksMap and BlockInfo made package private. (shv) + + NEW FEATURES + + HADOOP-3341. Allow streaming jobs to specify the field separator for map + and reduce input and output. The new configuration values are: + stream.map.input.field.separator + stream.map.output.field.separator + stream.reduce.input.field.separator + stream.reduce.output.field.separator + All of them default to "\t". (Zheng Shao via omalley) + + HADOOP-3479. Defines the configuration file for the resource manager in + Hadoop. You can configure various parameters related to scheduling, such + as queues and queue properties here. The properties for a queue follow a + naming convention,such as, hadoop.rm.queue.queue-name.property-name. + (Hemanth Yamijala via ddas) + + HADOOP-3149. Adds a way in which map/reducetasks can create multiple + outputs. (Alejandro Abdelnur via ddas) + + HADOOP-3714. Add a new contrib, bash-tab-completion, which enables + bash tab completion for the bin/hadoop script. See the README file + in the contrib directory for the installation. (Chris Smith via enis) + + HADOOP-3730. Adds a new JobConf constructor that disables loading + default configurations. (Alejandro Abdelnur via ddas) + + HADOOP-3772. Add a new Hadoop Instrumentation api for the JobTracker and + the TaskTracker, refactor Hadoop Metrics as an implementation of the api. + (Ari Rabkin via acmurthy) + + HADOOP-2302. Provides a comparator for numerical sorting of key fields. + (ddas) + + HADOOP-153. Provides a way to skip bad records. (Sharad Agarwal via ddas) + + HADOOP-657. Free disk space should be modelled and used by the scheduler + to make scheduling decisions. (Ari Rabkin via omalley) + + HADOOP-3719. Initial checkin of Chukwa, which is a data collection and + analysis framework. (Jerome Boulon, Andy Konwinski, Ari Rabkin, + and Eric Yang) + + HADOOP-3873. Add -filelimit and -sizelimit options to distcp to cap the + number of files/bytes copied in a particular run to support incremental + updates and mirroring. (TszWo (Nicholas), SZE via cdouglas) + + HADOOP-3585. FailMon package for hardware failure monitoring and + analysis of anomalies. (Ioannis Koltsidas via dhruba) + + HADOOP-1480. Add counters to the C++ Pipes API. (acmurthy via omalley) + + HADOOP-3854. Add support for pluggable servlet filters in the HttpServers. + (Tsz Wo (Nicholas) Sze via omalley) + + HADOOP-3759. Provides ability to run memory intensive jobs without + affecting other running tasks on the nodes. (Hemanth Yamijala via ddas) + + HADOOP-3746. Add a fair share scheduler. (Matei Zaharia via omalley) + + HADOOP-3754. Add a thrift interface to access HDFS. (dhruba via omalley) + + HADOOP-3828. Provides a way to write skipped records to DFS. + (Sharad Agarwal via ddas) + + HADOOP-3948. Separate name-node edits and fsimage directories. + (Lohit Vijayarenu via shv) + + HADOOP-3939. Add an option to DistCp to delete files at the destination + not present at the source. (Tsz Wo (Nicholas) Sze via cdouglas) + + HADOOP-3601. Add a new contrib module for Hive, which is a sql-like + query processing tool that uses map/reduce. (Ashish Thusoo via omalley) + + HADOOP-3866. Added sort and multi-job updates in the JobTracker web ui. + (Craig Weisenfluh via omalley) + + HADOOP-3698. Add access control to control who is allowed to submit or + modify jobs in the JobTracker. (Hemanth Yamijala via omalley) + + HADOOP-1869. Support access times for HDFS files. (dhruba) + + HADOOP-3941. Extend FileSystem API to return file-checksums. + (szetszwo) + + HADOOP-3581. Prevents memory intensive user tasks from taking down + nodes. (Vinod K V via ddas) + + HADOOP-3970. Provides a way to recover counters written to JobHistory. + (Amar Kamat via ddas) + + HADOOP-3702. Adds ChainMapper and ChainReducer classes allow composing + chains of Maps and Reduces in a single Map/Reduce job, something like + MAP+ / REDUCE MAP*. (Alejandro Abdelnur via ddas) + + HADOOP-3445. Add capacity scheduler that provides guaranteed capacities to + queues as a percentage of the cluster. (Vivek Ratan via omalley) + + HADOOP-3992. Add a synthetic load generation facility to the test + directory. (hairong via szetszwo) + + HADOOP-3981. Implement a distributed file checksum algorithm in HDFS + and change DistCp to use file checksum for comparing src and dst files + (szetszwo) + + HADOOP-3829. Narrown down skipped records based on user acceptable value. + (Sharad Agarwal via ddas) + + HADOOP-3930. Add common interfaces for the pluggable schedulers and the + cli & gui clients. (Sreekanth Ramakrishnan via omalley) + + HADOOP-4176. Implement getFileChecksum(Path) in HftpFileSystem. (szetszwo) + + HADOOP-249. Reuse JVMs across Map-Reduce Tasks. + Configuration changes to hadoop-default.xml: + add mapred.job.reuse.jvm.num.tasks + (Devaraj Das via acmurthy) + + HADOOP-4070. Provide a mechanism in Hive for registering UDFs from the + query language. (tomwhite) + + HADOOP-2536. Implement a JDBC based database input and output formats to + allow Map-Reduce applications to work with databases. (Fredrik Hedberg and + Enis Soztutar via acmurthy) + + HADOOP-3019. A new library to support total order partitions. + (cdouglas via omalley) + + HADOOP-3924. Added a 'KILLED' job status. (Subramaniam Krishnan via + acmurthy) + + IMPROVEMENTS + + HADOOP-4205. hive: metastore and ql to use the refactored SerDe library. + (zshao) + + HADOOP-4106. libhdfs: add time, permission and user attribute support + (part 2). (Pete Wyckoff through zshao) + + HADOOP-4104. libhdfs: add time, permission and user attribute support. + (Pete Wyckoff through zshao) + + HADOOP-3908. libhdfs: better error message if llibhdfs.so doesn't exist. + (Pete Wyckoff through zshao) + + HADOOP-3732. Delay intialization of datanode block verification till + the verification thread is started. (rangadi) + + HADOOP-1627. Various small improvements to 'dfsadmin -report' output. + (rangadi) + + HADOOP-3577. Tools to inject blocks into name node and simulated + data nodes for testing. (Sanjay Radia via hairong) + + HADOOP-2664. Add a lzop compatible codec, so that files compressed by lzop + may be processed by map/reduce. (cdouglas via omalley) + + HADOOP-3655. Add additional ant properties to control junit. (Steve + Loughran via omalley) + + HADOOP-3543. Update the copyright year to 2008. (cdouglas via omalley) + + HADOOP-3587. Add a unit test for the contrib/data_join framework. + (cdouglas) + + HADOOP-3402. Add terasort example program (omalley) + + HADOOP-3660. Add replication factor for injecting blocks in simulated + datanodes. (Sanjay Radia via cdouglas) + + HADOOP-3684. Add a cloning function to the contrib/data_join framework + permitting users to define a more efficient method for cloning values from + the reduce than serialization/deserialization. (Runping Qi via cdouglas) + + HADOOP-3478. Improves the handling of map output fetching. Now the + randomization is by the hosts (and not the map outputs themselves). + (Jothi Padmanabhan via ddas) + + HADOOP-3617. Removed redundant checks of accounting space in MapTask and + makes the spill thread persistent so as to avoid creating a new one for + each spill. (Chris Douglas via acmurthy) + + HADOOP-3412. Factor the scheduler out of the JobTracker and make + it pluggable. (Tom White and Brice Arnould via omalley) + + HADOOP-3756. Minor. Remove unused dfs.client.buffer.dir from + hadoop-default.xml. (rangadi) + + HADOOP-3747. Adds counter suport for MultipleOutputs. + (Alejandro Abdelnur via ddas) + + HADOOP-3169. LeaseChecker daemon should not be started in DFSClient + constructor. (TszWo (Nicholas), SZE via hairong) + + HADOOP-3824. Move base functionality of StatusHttpServer to a core + package. (TszWo (Nicholas), SZE via cdouglas) + + HADOOP-3646. Add a bzip2 compatible codec, so bzip compressed data + may be processed by map/reduce. (Abdul Qadeer via cdouglas) + + HADOOP-3861. MapFile.Reader and Writer should implement Closeable. + (tomwhite via omalley) + + HADOOP-3791. Introduce generics into ReflectionUtils. (Chris Smith via + cdouglas) + + HADOOP-3694. Improve unit test performance by changing + MiniDFSCluster to listen only on 127.0.0.1. (cutting) + + HADOOP-3620. Namenode should synchronously resolve a datanode's network + location when the datanode registers. (hairong) + + HADOOP-3860. NNThroughputBenchmark is extended with rename and delete + benchmarks. (shv) + + HADOOP-3892. Include unix group name in JobConf. (Matei Zaharia via johan) + + HADOOP-3875. Change the time period between heartbeats to be relative to + the end of the heartbeat rpc, rather than the start. This causes better + behavior if the JobTracker is overloaded. (acmurthy via omalley) + + HADOOP-3853. Move multiple input format (HADOOP-372) extension to + library package. (tomwhite via johan) + + HADOOP-9. Use roulette scheduling for temporary space when the size + is not known. (Ari Rabkin via omalley) + + HADOOP-3202. Use recursive delete rather than FileUtil.fullyDelete. + (Amareshwari Sriramadasu via omalley) + + HADOOP-3368. Remove common-logging.properties from conf. (Steve Loughran + via omalley) + + HADOOP-3851. Fix spelling mistake in FSNamesystemMetrics. (Steve Loughran + via omalley) + + HADOOP-3780. Remove asynchronous resolution of network topology in the + JobTracker (Amar Kamat via omalley) + + HADOOP-3852. Add ShellCommandExecutor.toString method to make nicer + error messages. (Steve Loughran via omalley) + + HADOOP-3844. Include message of local exception in RPC client failures. + (Steve Loughran via omalley) + + HADOOP-3935. Split out inner classes from DataNode.java. (johan) + + HADOOP-3905. Create generic interfaces for edit log streams. (shv) + + HADOOP-3062. Add metrics to DataNode and TaskTracker to record network + traffic for HDFS reads/writes and MR shuffling. (cdouglas) + + HADOOP-3742. Remove HDFS from public java doc and add javadoc-dev for + generative javadoc for developers. (Sanjay Radia via omalley) + + HADOOP-3944. Improve documentation for public TupleWritable class in + join package. (Chris Douglas via enis) + + HADOOP-2330. Preallocate HDFS transaction log to improve performance. + (dhruba and hairong) + + HADOOP-3965. Convert DataBlockScanner into a package private class. (shv) + + HADOOP-3488. Prevent hadoop-daemon from rsync'ing log files (Stefan + Groshupf and Craig Macdonald via omalley) + + HADOOP-3342. Change the kill task actions to require http post instead of + get to prevent accidental crawls from triggering it. (enis via omalley) + + HADOOP-3937. Limit the job name in the job history filename to 50 + characters. (Matei Zaharia via omalley) + + HADOOP-3943. Remove unnecessary synchronization in + NetworkTopology.pseudoSortByDistance. (hairong via omalley) + + HADOOP-3498. File globbing alternation should be able to span path + components. (tomwhite) + + HADOOP-3361. Implement renames for NativeS3FileSystem. + (Albert Chern via tomwhite) + + HADOOP-3605. Make EC2 scripts show an error message if AWS_ACCOUNT_ID is + unset. (Al Hoang via tomwhite) + + HADOOP-4147. Remove unused class JobWithTaskContext from class + JobInProgress. (Amareshwari Sriramadasu via johan) + + HADOOP-4151. Add a byte-comparable interface that both Text and + BytesWritable implement. (cdouglas via omalley) + + HADOOP-4174. Move fs image/edit log methods from ClientProtocol to + NamenodeProtocol. (shv via szetszwo) + + HADOOP-4181. Include a .gitignore and saveVersion.sh change to support + developing under git. (omalley) + + HADOOP-4186. Factor LineReader out of LineRecordReader. (tomwhite via + omalley) + + HADOOP-4184. Break the module dependencies between core, hdfs, and + mapred. (tomwhite via omalley) + + HADOOP-4075. test-patch.sh now spits out ant commands that it runs. + (Ramya R via nigel) + + HADOOP-4117. Improve configurability of Hadoop EC2 instances. + (tomwhite) + + HADOOP-2411. Add support for larger CPU EC2 instance types. + (Chris K Wensel via tomwhite) + + HADOOP-4083. Changed the configuration attribute queue.name to + mapred.job.queue.name. (Hemanth Yamijala via acmurthy) + + HADOOP-4194. Added the JobConf and JobID to job-related methods in + JobTrackerInstrumentation for better metrics. (Mac Yang via acmurthy) + + HADOOP-3975. Change test-patch script to report working the dir + modifications preventing the suite from being run. (Ramya R via cdouglas) + + HADOOP-4124. Added a command-line switch to allow users to set job + priorities, also allow it to be manipulated via the web-ui. (Hemanth + Yamijala via acmurthy) + + HADOOP-2165. Augmented JobHistory to include the URIs to the tasks' + userlogs. (Vinod Kumar Vavilapalli via acmurthy) + + HADOOP-4062. Remove the synchronization on the output stream when a + connection is closed and also remove an undesirable exception when + a client is stoped while there is no pending RPC request. (hairong) + + HADOOP-4227. Remove the deprecated class org.apache.hadoop.fs.ShellCommand. + (szetszwo) + + HADOOP-4006. Clean up FSConstants and move some of the constants to + better places. (Sanjay Radia via rangadi) + + HADOOP-4279. Trace the seeds of random sequences in append unit tests to + make itermitant failures reproducible. (szetszwo via cdouglas) + + HADOOP-4209. Remove the change to the format of task attempt id by + incrementing the task attempt numbers by 1000 when the job restarts. + (Amar Kamat via omalley) + + HADOOP-4301. Adds forrest doc for the skip bad records feature. + (Sharad Agarwal via ddas) + + HADOOP-4354. Separate TestDatanodeDeath.testDatanodeDeath() into 4 tests. + (szetszwo) + + HADOOP-3790. Add more unit tests for testing HDFS file append. (szetszwo) + + HADOOP-4321. Include documentation for the capacity scheduler. (Hemanth + Yamijala via omalley) + + HADOOP-4424. Change menu layout for Hadoop documentation (Boris Shkolnik + via cdouglas). + + HADOOP-4438. Update forrest documentation to include missing FsShell + commands. (Suresh Srinivas via cdouglas) + + HADOOP-4105. Add forrest documentation for libhdfs. + (Pete Wyckoff via cutting) + + HADOOP-4510. Make getTaskOutputPath public. (Chris Wensel via omalley) + + OPTIMIZATIONS + + HADOOP-3556. Removed lock contention in MD5Hash by changing the + singleton MessageDigester by an instance per Thread using + ThreadLocal. (Iv?n de Prado via omalley) + + HADOOP-3328. When client is writing data to DFS, only the last + datanode in the pipeline needs to verify the checksum. Saves around + 30% CPU on intermediate datanodes. (rangadi) + + HADOOP-3863. Use a thread-local string encoder rather than a static one + that is protected by a lock. (acmurthy via omalley) + + HADOOP-3864. Prevent the JobTracker from locking up when a job is being + initialized. (acmurthy via omalley) + + HADOOP-3816. Faster directory listing in KFS. (Sriram Rao via omalley) + + HADOOP-2130. Pipes submit job should have both blocking and non-blocking + versions. (acmurthy via omalley) + + HADOOP-3769. Make the SampleMapper and SampleReducer from + GenericMRLoadGenerator public, so they can be used in other contexts. + (Lingyun Yang via omalley) + + HADOOP-3514. Inline the CRCs in intermediate files as opposed to reading + it from a different .crc file. (Jothi Padmanabhan via ddas) + + HADOOP-3638. Caches the iFile index files in memory to reduce seeks + (Jothi Padmanabhan via ddas) + + HADOOP-4225. FSEditLog.logOpenFile() should persist accessTime + rather than modificationTime. (shv) + + HADOOP-4380. Made several new classes (Child, JVMId, + JobTrackerInstrumentation, QueueManager, ResourceEstimator, + TaskTrackerInstrumentation, and TaskTrackerMetricsInst) in + org.apache.hadoop.mapred package private instead of public. (omalley) + + BUG FIXES + + HADOOP-3563. Refactor the distributed upgrade code so that it is + easier to identify datanode and namenode related code. (dhruba) + + HADOOP-3640. Fix the read method in the NativeS3InputStream. (tomwhite via + omalley) + + HADOOP-3711. Fixes the Streaming input parsing to properly find the + separator. (Amareshwari Sriramadasu via ddas) + + HADOOP-3725. Prevent TestMiniMRMapDebugScript from swallowing exceptions. + (Steve Loughran via cdouglas) + + HADOOP-3726. Throw exceptions from TestCLI setup and teardown instead of + swallowing them. (Steve Loughran via cdouglas) + + HADOOP-3721. Refactor CompositeRecordReader and related mapred.join classes + to make them clearer. (cdouglas) + + HADOOP-3720. Re-read the config file when dfsadmin -refreshNodes is invoked + so dfs.hosts and dfs.hosts.exclude are observed. (lohit vijayarenu via + cdouglas) + + HADOOP-3485. Allow writing to files over fuse. + (Pete Wyckoff via dhruba) + + HADOOP-3723. The flags to the libhdfs.create call can be treated as + a bitmask. (Pete Wyckoff via dhruba) + + HADOOP-3643. Filter out completed tasks when asking for running tasks in + the JobTracker web/ui. (Amar Kamat via omalley) + + HADOOP-3777. Ensure that Lzo compressors/decompressors correctly handle the + case where native libraries aren't available. (Chris Douglas via acmurthy) + + HADOOP-3728. Fix SleepJob so that it doesn't depend on temporary files, + this ensures we can now run more than one instance of SleepJob + simultaneously. (Chris Douglas via acmurthy) + + HADOOP-3795. Fix saving image files on Namenode with different checkpoint + stamps. (Lohit Vijayarenu via mahadev) + + HADOOP-3624. Improving createeditslog to create tree directory structure. + (Lohit Vijayarenu via mahadev) + + HADOOP-3778. DFSInputStream.seek() did not retry in case of some errors. + (Luo Ning via rangadi) + + HADOOP-3661. The handling of moving files deleted through fuse-dfs to + Trash made similar to the behaviour from dfs shell. + (Pete Wyckoff via dhruba) + + HADOOP-3819. Unset LANG and LC_CTYPE in saveVersion.sh to make it + compatible with non-English locales. (Rong-En Fan via cdouglas) + + HADOOP-3848. Cache calls to getSystemDir in the TaskTracker instead of + calling it for each task start. (acmurthy via omalley) + + HADOOP-3131. Fix reduce progress reporting for compressed intermediate + data. (Matei Zaharia via acmurthy) + + HADOOP-3796. fuse-dfs configuration is implemented as file system + mount options. (Pete Wyckoff via dhruba) + + HADOOP-3836. Fix TestMultipleOutputs to correctly clean up. (Alejandro + Abdelnur via acmurthy) + + HADOOP-3805. Improve fuse-dfs write performance. + (Pete Wyckoff via zshao) + + HADOOP-3846. Fix unit test CreateEditsLog to generate paths correctly. + (Lohit Vjayarenu via cdouglas) + + HADOOP-3904. Fix unit tests using the old dfs package name. + (TszWo (Nicholas), SZE via johan) + + HADOOP-3319. Fix some HOD error messages to go stderr instead of + stdout. (Vinod Kumar Vavilapalli via omalley) + + HADOOP-3907. Move INodeDirectoryWithQuota to its own .java file. + (Tsz Wo (Nicholas), SZE via hairong) + + HADOOP-3919. Fix attribute name in hadoop-default for + mapred.jobtracker.instrumentation. (Ari Rabkin via omalley) + + HADOOP-3903. Change the package name for the servlets to be hdfs instead of + dfs. (Tsz Wo (Nicholas) Sze via omalley) + + HADOOP-3773. Change Pipes to set the default map output key and value + types correctly. (Koji Noguchi via omalley) + + HADOOP-3952. Fix compilation error in TestDataJoin referencing dfs package. + (omalley) + + HADOOP-3951. Fix package name for FSNamesystem logs and modify other + hard-coded Logs to use the class name. (cdouglas) + + HADOOP-3889. Improve error reporting from HftpFileSystem, handling in + DistCp. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3946. Fix TestMapRed after hadoop-3664. (tomwhite via omalley) + + HADOOP-3949. Remove duplicate jars from Chukwa. (Jerome Boulon via omalley) + + HADOOP-3933. DataNode sometimes sends up to io.byte.per.checksum bytes + more than required to client. (Ning Li via rangadi) + + HADOOP-3962. Shell command "fs -count" should support paths with different + file systems. (Tsz Wo (Nicholas), SZE via mahadev) + + HADOOP-3957. Fix javac warnings in DistCp and TestCopyFiles. (Tsz Wo + (Nicholas), SZE via cdouglas) + + HADOOP-3958. Fix TestMapRed to check the success of test-job. (omalley via + acmurthy) + + HADOOP-3985. Fix TestHDFSServerPorts to use random ports. (Hairong Kuang + via omalley) + + HADOOP-3964. Fix javadoc warnings introduced by FailMon. (dhruba) + + HADOOP-3785. Fix FileSystem cache to be case-insensitive for scheme and + authority. (Bill de hOra via cdouglas) + + HADOOP-3506. Fix a rare NPE caused by error handling in S3. (Tom White via + cdouglas) + + HADOOP-3705. Fix mapred.join parser to accept InputFormats named with + underscore and static, inner classes. (cdouglas) + + HADOOP-4023. Fix javadoc warnings introduced when the HDFS javadoc was + made private. (omalley) + + HADOOP-4030. Remove lzop from the default list of codecs. (Arun Murthy via + cdouglas) + + HADOOP-3961. Fix task disk space requirement estimates for virtual + input jobs. Delays limiting task placement until after 10% of the maps + have finished. (Ari Rabkin via omalley) + + HADOOP-2168. Fix problem with C++ record reader's progress not being + reported to framework. (acmurthy via omalley) + + HADOOP-3966. Copy findbugs generated output files to PATCH_DIR while + running test-patch. (Ramya R via lohit) + + HADOOP-4037. Fix the eclipse plugin for versions of kfs and log4j. (nigel + via omalley) + + HADOOP-3950. Cause the Mini MR cluster to wait for task trackers to + register before continuing. (enis via omalley) + + HADOOP-3910. Remove unused ClusterTestDFSNamespaceLogging and + ClusterTestDFS. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3954. Disable record skipping by default. (Sharad Agarwal via + cdouglas) + + HADOOP-4050. Fix TestFairScheduler to use absolute paths for the work + directory. (Matei Zaharia via omalley) + + HADOOP-4069. Keep temporary test files from TestKosmosFileSystem under + test.build.data instead of /tmp. (lohit via omalley) + + HADOOP-4078. Create test files for TestKosmosFileSystem in separate + directory under test.build.data. (lohit) + + HADOOP-3968. Fix getFileBlockLocations calls to use FileStatus instead + of Path reflecting the new API. (Pete Wyckoff via lohit) + + HADOOP-3963. libhdfs does not exit on its own, instead it returns error + to the caller and behaves as a true library. (Pete Wyckoff via dhruba) + + HADOOP-4100. Removes the cleanupTask scheduling from the Scheduler + implementations and moves it to the JobTracker. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4097. Make hive work well with speculative execution turned on. + (Joydeep Sen Sarma via dhruba) + + HADOOP-4113. Changes to libhdfs to not exit on its own, rather return + an error code to the caller. (Pete Wyckoff via dhruba) + + HADOOP-4054. Remove duplicate lease removal during edit log loading. + (hairong) + + HADOOP-4071. FSNameSystem.isReplicationInProgress should add an + underReplicated block to the neededReplication queue using method + "add" not "update". (hairong) + + HADOOP-4154. Fix type warnings in WritableUtils. (szetszwo via omalley) + + HADOOP-4133. Log files generated by Hive should reside in the + build directory. (Prasad Chakka via dhruba) + + HADOOP-4094. Hive now has hive-default.xml and hive-site.xml similar + to core hadoop. (Prasad Chakka via dhruba) + + HADOOP-4112. Handles cleanupTask in JobHistory + (Amareshwari Sriramadasu via ddas) + + HADOOP-3831. Very slow reading clients sometimes failed while reading. + (rangadi) + + HADOOP-4155. Use JobTracker's start time while initializing JobHistory's + JobTracker Unique String. (lohit) + + HADOOP-4099. Fix null pointer when using HFTP from an 0.18 server. + (dhruba via omalley) + + HADOOP-3570. Includes user specified libjar files in the client side + classpath path. (Sharad Agarwal via ddas) + + HADOOP-4129. Changed memory limits of TaskTracker and Tasks to be in + KiloBytes rather than bytes. (Vinod Kumar Vavilapalli via acmurthy) + + HADOOP-4139. Optimize Hive multi group-by. + (Namin Jain via dhruba) + + HADOOP-3911. Add a check to fsck options to make sure -files is not + the first option to resolve conflicts with GenericOptionsParser + (lohit) + + HADOOP-3623. Refactor LeaseManager. (szetszwo) + + HADOOP-4125. Handles Reduce cleanup tip on the web ui. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4087. Hive Metastore API for php and python clients. + (Prasad Chakka via dhruba) + + HADOOP-4197. Update DATA_TRANSFER_VERSION for HADOOP-3981. (szetszwo) + + HADOOP-4138. Refactor the Hive SerDe library to better structure + the interfaces to the serializer and de-serializer. + (Zheng Shao via dhruba) + + HADOOP-4195. Close compressor before returning to codec pool. + (acmurthy via omalley) + + HADOOP-2403. Escapes some special characters before logging to + history files. (Amareshwari Sriramadasu via ddas) + + HADOOP-4200. Fix a bug in the test-patch.sh script. + (Ramya R via nigel) + + HADOOP-4084. Add explain plan capabilities to Hive Query Language. + (Ashish Thusoo via dhruba) + + HADOOP-4121. Preserve cause for exception if the initialization of + HistoryViewer for JobHistory fails. (Amareshwari Sri Ramadasu via + acmurthy) + + HADOOP-4213. Fixes NPE in TestLimitTasksPerJobTaskScheduler. + (Sreekanth Ramakrishnan via ddas) + + HADOOP-4077. Setting access and modification time for a file + requires write permissions on the file. (dhruba) + + HADOOP-3592. Fix a couple of possible file leaks in FileUtil + (Bill de hOra via rangadi) + + HADOOP-4120. Hive interactive shell records the time taken by a + query. (Raghotham Murthy via dhruba) + + HADOOP-4090. The hive scripts pick up hadoop from HADOOP_HOME + and then the path. (Raghotham Murthy via dhruba) + + HADOOP-4242. Remove extra ";" in FSDirectory that blocks compilation + in some IDE's. (szetszwo via omalley) + + HADOOP-4249. Fix eclipse path to include the hsqldb.jar. (szetszwo via + omalley) + + HADOOP-4247. Move InputSampler into org.apache.hadoop.mapred.lib, so that + examples.jar doesn't depend on tools.jar. (omalley) + + HADOOP-4269. Fix the deprecation of LineReader by extending the new class + into the old name and deprecating it. Also update the tests to test the + new class. (cdouglas via omalley) + + HADOOP-4280. Fix conversions between seconds in C and milliseconds in + Java for access times for files. (Pete Wyckoff via rangadi) + + HADOOP-4254. -setSpaceQuota command does not convert "TB" extenstion to + terabytes properly. Implementation now uses StringUtils for parsing this. + (Raghu Angadi) + + HADOOP-4259. Findbugs should run over tools.jar also. (cdouglas via + omalley) + + HADOOP-4275. Move public method isJobValidName from JobID to a private + method in JobTracker. (omalley) + + HADOOP-4173. fix failures in TestProcfsBasedProcessTree and + TestTaskTrackerMemoryManager tests. ProcfsBasedProcessTree and + memory management in TaskTracker are disabled on Windows. + (Vinod K V via rangadi) + + HADOOP-4189. Fixes the history blocksize & intertracker protocol version + issues introduced as part of HADOOP-3245. (Amar Kamat via ddas) + + HADOOP-4190. Fixes the backward compatibility issue with Job History. + introduced by HADOOP-3245 and HADOOP-2403. (Amar Kamat via ddas) + + HADOOP-4237. Fixes the TestStreamingBadRecords.testNarrowDown testcase. + (Sharad Agarwal via ddas) + + HADOOP-4274. Capacity scheduler accidently modifies the underlying + data structures when browing the job lists. (Hemanth Yamijala via omalley) + + HADOOP-4309. Fix eclipse-plugin compilation. (cdouglas) + + HADOOP-4232. Fix race condition in JVM reuse when multiple slots become + free. (ddas via acmurthy) + + HADOOP-4302. Fix a race condition in TestReduceFetch that can yield false + negatvies. (cdouglas) + + HADOOP-3942. Update distcp documentation to include features introduced in + HADOOP-3873, HADOOP-3939. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-4319. fuse-dfs dfs_read function returns as many bytes as it is + told to read unlesss end-of-file is reached. (Pete Wyckoff via dhruba) + + HADOOP-4246. Ensure we have the correct lower bound on the number of + retries for fetching map-outputs; also fixed the case where the reducer + automatically kills on too many unique map-outputs could not be fetched + for small jobs. (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-4163. Report FSErrors from map output fetch threads instead of + merely logging them. (Sharad Agarwal via cdouglas) + + HADOOP-4261. Adds a setup task for jobs. This is required so that we + don't setup jobs that haven't been inited yet (since init could lead + to job failure). Only after the init has successfully happened do we + launch the setupJob task. (Amareshwari Sriramadasu via ddas) + + HADOOP-4256. Removes Completed and Failed Job tables from + jobqueue_details.jsp. (Sreekanth Ramakrishnan via ddas) + + HADOOP-4267. Occasional exceptions during shutting down HSQLDB is logged + but not rethrown. (enis) + + HADOOP-4018. The number of tasks for a single job cannot exceed a + pre-configured maximum value. (dhruba) + + HADOOP-4288. Fixes a NPE problem in CapacityScheduler. + (Amar Kamat via ddas) + + HADOOP-4014. Create hard links with 'fsutil hardlink' on Windows. (shv) + + HADOOP-4393. Merged org.apache.hadoop.fs.permission.AccessControlException + and org.apache.hadoop.security.AccessControlIOException into a single + class hadoop.security.AccessControlException. (omalley via acmurthy) + + HADOOP-4287. Fixes an issue to do with maintaining counts of running/pending + maps/reduces. (Sreekanth Ramakrishnan via ddas) + + HADOOP-4361. Makes sure that jobs killed from command line are killed + fast (i.e., there is a slot to run the cleanup task soon). + (Amareshwari Sriramadasu via ddas) + + HADOOP-4400. Add "hdfs://" to fs.default.name on quickstart.html. + (Jeff Hammerbacher via omalley) + + HADOOP-4378. Fix TestJobQueueInformation to use SleepJob rather than + WordCount via TestMiniMRWithDFS. (Sreekanth Ramakrishnan via acmurthy) + + HADOOP-4376. Fix formatting in hadoop-default.xml for + hadoop.http.filter.initializers. (Enis Soztutar via acmurthy) + + HADOOP-4410. Adds an extra arg to the API FileUtil.makeShellPath to + determine whether to canonicalize file paths or not. + (Amareshwari Sriramadasu via ddas) + + HADOOP-4236. Ensure un-initialized jobs are killed correctly on + user-demand. (Sharad Agarwal via acmurthy) + + HADOOP-4373. Fix calculation of Guaranteed Capacity for the + capacity-scheduler. (Hemanth Yamijala via acmurthy) + + HADOOP-4053. Schedulers must be notified when jobs complete. (Amar Kamat via omalley) + + HADOOP-4335. Fix FsShell -ls for filesystems without owners/groups. (David + Phillips via cdouglas) + + HADOOP-4426. TestCapacityScheduler broke due to the two commits HADOOP-4053 + and HADOOP-4373. This patch fixes that. (Hemanth Yamijala via ddas) + + HADOOP-4418. Updates documentation in forrest for Mapred, streaming and pipes. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3155. Ensure that there is only one thread fetching + TaskCompletionEvents on TaskTracker re-init. (Dhruba Borthakur via + acmurthy) + + HADOOP-4425. Fix EditLogInputStream to overload the bulk read method. + (cdouglas) + + HADOOP-4427. Adds the new queue/job commands to the manual. + (Sreekanth Ramakrishnan via ddas) + + HADOOP-4278. Increase debug logging for unit test TestDatanodeDeath. + Fix the case when primary is dead. (dhruba via szetszwo) + + HADOOP-4423. Keep block length when the block recovery is triggered by + append. (szetszwo) + + HADOOP-4449. Fix dfsadmin usage. (Raghu Angadi via cdouglas) + + HADOOP-4455. Added TestSerDe so that unit tests can run successfully. + (Ashish Thusoo via dhruba) + + HADOOP-4457. Fixes an input split logging problem introduced by + HADOOP-3245. (Amareshwari Sriramadasu via ddas) + + HADOOP-4464. Separate out TestFileCreationClient from TestFileCreation. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-4404. saveFSImage() removes files from a storage directory that do + not correspond to its type. (shv) + + HADOOP-4149. Fix handling of updates to the job priority, by changing the + list of jobs to be keyed by the priority, submit time, and job tracker id. + (Amar Kamat via omalley) + + HADOOP-4296. Fix job client failures by not retiring a job as soon as it + is finished. (dhruba) + + HADOOP-4439. Remove configuration variables that aren't usable yet, in + particular mapred.tasktracker.tasks.maxmemory and mapred.task.max.memory. + (Hemanth Yamijala via omalley) + + HADOOP-4230. Fix for serde2 interface, limit operator, select * operator, + UDF trim functions and sampling. (Ashish Thusoo via dhruba) + + HADOOP-4358. No need to truncate access time in INode. Also fixes NPE + in CreateEditsLog. (Raghu Angadi) + + HADOOP-4387. TestHDFSFileSystemContract fails on windows nightly builds. + (Raghu Angadi) + + HADOOP-4466. Ensure that SequenceFileOutputFormat isn't tied to Writables + and can be used with other Serialization frameworks. (Chris Wensel via + acmurthy) + + HADOOP-4525. Fix ipc.server.ipcnodelay originally missed in in HADOOP-2232. + (cdouglas via Clint Morgan) + + HADOOP-4498. Ensure that JobHistory correctly escapes the job name so that + regex patterns work. (Chris Wensel via acmurthy) + + HADOOP-4446. Modify guaranteed capacity labels in capacity scheduler's UI + to reflect the information being displayed. (Sreekanth Ramakrishnan via + yhemanth) + + HADOOP-4282. Some user facing URLs are not filtered by user filters. + (szetszwo) + + HADOOP-4595. Fixes two race conditions - one to do with updating free slot count, + and another to do with starting the MapEventsFetcher thread. (ddas) + + HADOOP-4552. Fix a deadlock in RPC server. (Raghu Angadi) + + HADOOP-4471. Sort running jobs by priority in the capacity scheduler. + (Amar Kamat via yhemanth) + + HADOOP-4500. Fix MultiFileSplit to get the FileSystem from the relevant + path rather than the JobClient. (Joydeep Sen Sarma via cdouglas) + +Release 0.18.4 - Unreleased + + BUG FIXES + + HADOOP-5114. Remove timeout for accept() in DataNode. This makes accept() + fail in JDK on Windows and causes many tests to fail. (Raghu Angadi) + + HADOOP-5192. Block receiver should not remove a block that's created or + being written by other threads. (hairong) + + HADOOP-5134. FSNamesystem#commitBlockSynchronization adds under-construction + block locations to blocksMap. (Dhruba Borthakur via hairong) + + HADOOP-5412. Simulated DataNode should not write to a block that's being + written by another thread. (hairong) + + HADOOP-5465. Fix the problem of blocks remaining under-replicated by + providing synchronized modification to the counter xmitsInProgress in + DataNode. (hairong) + + HADOOP-5557. Fixes some minor problems in TestOverReplicatedBlocks. + (szetszwo) + + HADOOP-5644. Namenode is stuck in safe mode. (suresh Srinivas via hairong) + + HADOOP-6017. Lease Manager in NameNode does not handle certain characters + in filenames. This results in fatal errors in Secondary NameNode and while + restrating NameNode. (Tsz Wo (Nicholas), SZE via rangadi) + +Release 0.18.3 - 2009-01-27 + + IMPROVEMENTS + + HADOOP-4150. Include librecordio in hadoop releases. (Giridharan Kesavan + via acmurthy) + + HADOOP-4668. Improve documentation for setCombinerClass to clarify the + restrictions on combiners. (omalley) + + BUG FIXES + + HADOOP-4499. DFSClient should invoke checksumOk only once. (Raghu Angadi) + + HADOOP-4597. Calculate mis-replicated blocks when safe-mode is turned + off manually. (shv) + + HADOOP-3121. lsr should keep listing the remaining items but not + terminate if there is any IOException. (szetszwo) + + HADOOP-4610. Always calculate mis-replicated blocks when safe-mode is + turned off. (shv) + + HADOOP-3883. Limit namenode to assign at most one generation stamp for + a particular block within a short period. (szetszwo) + + HADOOP-4556. Block went missing. (hairong) + + HADOOP-4643. NameNode should exclude excessive replicas when counting + live replicas for a block. (hairong) + + HADOOP-4703. Should not wait for proxy forever in lease recovering. + (szetszwo) + + HADOOP-4647. NamenodeFsck should close the DFSClient it has created. + (szetszwo) + + HADOOP-4616. Fuse-dfs can handle bad values from FileSystem.read call. + (Pete Wyckoff via dhruba) + + HADOOP-4061. Throttle Datanode decommission monitoring in Namenode. + (szetszwo) + + HADOOP-4659. Root cause of connection failure is being lost to code that + uses it for delaying startup. (Steve Loughran and Hairong via hairong) + + HADOOP-4614. Lazily open segments when merging map spills to avoid using + too many file descriptors. (Yuri Pradkin via cdouglas) + + HADOOP-4257. The DFS client should pick only one datanode as the candidate + to initiate lease recovery. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-4713. Fix librecordio to handle records larger than 64k. (Christian + Kunz via cdouglas) + + HADOOP-4635. Fix a memory leak in fuse dfs. (pete wyckoff via mahadev) + + HADOOP-4714. Report status between merges and make the number of records + between progress reports configurable. (Jothi Padmanabhan via cdouglas) + + HADOOP-4726. Fix documentation typos "the the". (Edward J. Yoon via + szetszwo) + + HADOOP-4679. Datanode prints tons of log messages: waiting for threadgroup + to exit, active threads is XX. (hairong) + + HADOOP-4746. Job output directory should be normalized. (hairong) + + HADOOP-4717. Removal of default port# in NameNode.getUri() causes a + map/reduce job failed to prompt temporary output. (hairong) + + HADOOP-4778. Check for zero size block meta file when updating a block. + (szetszwo) + + HADOOP-4742. Replica gets deleted by mistake. (Wang Xu via hairong) + + HADOOP-4702. Failed block replication leaves an incomplete block in + receiver's tmp data directory. (hairong) + + HADOOP-4613. Fix block browsing on Web UI. (Johan Oskarsson via shv) + + HADOOP-4806. HDFS rename should not use src path as a regular expression. + (szetszwo) + + HADOOP-4795. Prevent lease monitor getting into an infinite loop when + leases and the namespace tree does not match. (szetszwo) + + HADOOP-4620. Fixes Streaming to handle well the cases of map/reduce with empty + input/output. (Ravi Gummadi via ddas) + + HADOOP-4857. Fixes TestUlimit to have exactly 1 map in the jobs spawned. + (Ravi Gummadi via ddas) + + HADOOP-4810. Data lost at cluster startup time. (hairong) + + HADOOP-4797. Improve how RPC server reads and writes large buffers. Avoids + soft-leak of direct buffers and excess copies in NIO layer. (Raghu Angadi) + + HADOOP-4840. TestNodeCount sometimes fails with NullPointerException. + (hairong) + + HADOOP-4904. Fix deadlock while leaving safe mode. (shv) + + HADOOP-1980. 'dfsadmin -safemode enter' should prevent the namenode from + leaving safemode automatically. (shv & Raghu Angadi) + + HADOOP-4951. Lease monitor should acquire the LeaseManager lock but not the + Monitor lock. (szetszwo) + + HADOOP-4935. processMisReplicatedBlocks() should not clear + excessReplicateMap. (shv) + + HADOOP-4961. Fix ConcurrentModificationException in lease recovery + of empty files. (shv) + + HADOOP-4971. A long (unexpected) delay at datanodes could make subsequent + block reports from many datanode at the same time. (Raghu Angadi) + + HADOOP-4910. NameNode should exclude replicas when choosing excessive + replicas to delete to avoid data lose. (hairong) + + HADOOP-4983. Fixes a problem in updating Counters in the status reporting. + (Amareshwari Sriramadasu via ddas) + +Release 0.18.2 - 2008-11-03 + + BUG FIXES + + HADOOP-3614. Fix a bug that Datanode may use an old GenerationStamp to get + meta file. (szetszwo) + + HADOOP-4314. Simulated datanodes should not include blocks that are still + being written in their block report. (Raghu Angadi) + + HADOOP-4228. dfs datanode metrics, bytes_read and bytes_written, overflow + due to incorrect type used. (hairong) + + HADOOP-4395. The FSEditLog loading is incorrect for the case OP_SET_OWNER. + (szetszwo) + + HADOOP-4351. FSNamesystem.getBlockLocationsInternal throws + ArrayIndexOutOfBoundsException. (hairong) + + HADOOP-4403. Make TestLeaseRecovery and TestFileCreation more robust. + (szetszwo) + + HADOOP-4292. Do not support append() for LocalFileSystem. (hairong) + + HADOOP-4399. Make fuse-dfs multi-thread access safe. + (Pete Wyckoff via dhruba) + + HADOOP-4369. Use setMetric(...) instead of incrMetric(...) for metrics + averages. (Brian Bockelman via szetszwo) + + HADOOP-4469. Rename and add the ant task jar file to the tar file. (nigel) + + HADOOP-3914. DFSClient sends Checksum Ok only once for a block. + (Christian Kunz via hairong) + + HADOOP-4467. SerializationFactory now uses the current context ClassLoader + allowing for user supplied Serialization instances. (Chris Wensel via + acmurthy) + + HADOOP-4517. Release FSDataset lock before joining ongoing create threads. + (szetszwo) + + HADOOP-4526. fsck failing with NullPointerException. (hairong) + + HADOOP-4483 Honor the max parameter in DatanodeDescriptor.getBlockArray(..) + (Ahad Rana and Hairong Kuang via szetszwo) + + HADOOP-4340. Correctly set the exit code from JobShell.main so that the + 'hadoop jar' command returns the right code to the user. (acmurthy) + + NEW FEATURES + + HADOOP-2421. Add jdiff output to documentation, listing all API + changes from the prior release. (cutting) + +Release 0.18.1 - 2008-09-17 + + IMPROVEMENTS + + HADOOP-3934. Upgrade log4j to 1.2.15. (omalley) + + BUG FIXES + + HADOOP-3995. In case of quota failure on HDFS, rename does not restore + source filename. (rangadi) + + HADOOP-3821. Prevent SequenceFile and IFile from duplicating codecs in + CodecPool when closed more than once. (Arun Murthy via cdouglas) + + HADOOP-4040. Remove coded default of the IPC idle connection timeout + from the TaskTracker, which was causing HDFS client connections to not be + collected. (ddas via omalley) + + HADOOP-4046. Made WritableComparable's constructor protected instead of + private to re-enable class derivation. (cdouglas via omalley) + + HADOOP-3940. Fix in-memory merge condition to wait when there are no map + outputs or when the final map outputs are being fetched without contention. + (cdouglas) + +Release 0.18.0 - 2008-08-19 + + INCOMPATIBLE CHANGES + + HADOOP-2703. The default options to fsck skips checking files + that are being written to. The output of fsck is incompatible + with previous release. (lohit vijayarenu via dhruba) + + HADOOP-2865. FsShell.ls() printout format changed to print file names + in the end of the line. (Edward J. Yoon via shv) + + HADOOP-3283. The Datanode has a RPC server. It currently supports + two RPCs: the first RPC retrives the metadata about a block and the + second RPC sets the generation stamp of an existing block. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2797. Code related to upgrading to 0.14 (Block CRCs) is + removed. As result, upgrade to 0.18 or later from 0.13 or earlier + is not supported. If upgrading from 0.13 or earlier is required, + please upgrade to an intermediate version (0.14-0.17) and then + to this version. (rangadi) + + HADOOP-544. This issue introduces new classes JobID, TaskID and + TaskAttemptID, which should be used instead of their string counterparts. + Functions in JobClient, TaskReport, RunningJob, jobcontrol.Job and + TaskCompletionEvent that use string arguments are deprecated in favor + of the corresponding ones that use ID objects. Applications can use + xxxID.toString() and xxxID.forName() methods to convert/restore objects + to/from strings. (Enis Soztutar via ddas) + + HADOOP-2188. RPC client sends a ping rather than throw timeouts. + RPC server does not throw away old RPCs. If clients and the server are on + different versions, they are not able to function well. In addition, + The property ipc.client.timeout is removed from the default hadoop + configuration. It also removes metrics RpcOpsDiscardedOPsNum. (hairong) + + HADOOP-2181. This issue adds logging for input splits in Jobtracker log + and jobHistory log. Also adds web UI for viewing input splits in job UI + and history UI. (Amareshwari Sriramadasu via ddas) + + HADOOP-3226. Run combiners multiple times over map outputs as they + are merged in both the map and the reduce tasks. (cdouglas via omalley) + + HADOOP-3329. DatanodeDescriptor objects should not be stored in the + fsimage. (dhruba) + + HADOOP-2656. The Block object has a generation stamp inside it. + Existing blocks get a generation stamp of 0. This is needed to support + appends. (dhruba) + + HADOOP-3390. Removed deprecated ClientProtocol.abandonFileInProgress(). + (Tsz Wo (Nicholas), SZE via rangadi) + + HADOOP-3405. Made some map/reduce internal classes non-public: + MapTaskStatus, ReduceTaskStatus, JobSubmissionProtocol, + CompletedJobStatusStore. (enis via omaley) + + HADOOP-3265. Removed depcrecated API getFileCacheHints(). + (Lohit Vijayarenu via rangadi) + + HADOOP-3310. The namenode instructs the primary datanode to do lease + recovery. The block gets a new generation stamp. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2909. Improve IPC idle connection management. Property + ipc.client.maxidletime is removed from the default configuration, + instead it is defined as twice of the ipc.client.connection.maxidletime. + A connection with outstanding requests won't be treated as idle. + (hairong) + + HADOOP-3459. Change in the output format of dfs -ls to more closely match + /bin/ls. New format is: perm repl owner group size date name + (Mukund Madhugiri via omally) + + HADOOP-3113. An fsync invoked on a HDFS file really really + persists data! The datanode moves blocks in the tmp directory to + the real block directory on a datanode-restart. (dhruba) + + HADOOP-3452. Change fsck to return non-zero status for a corrupt + FileSystem. (lohit vijayarenu via cdouglas) + + HADOOP-3193. Include the address of the client that found the corrupted + block in the log. Also include a CorruptedBlocks metric to track the size + of the corrupted block map. (cdouglas) + + HADOOP-3512. Separate out the tools into a tools jar. (omalley) + + HADOOP-3598. Ensure that temporary task-output directories are not created + if they are not necessary e.g. for Maps with no side-effect files. + (acmurthy) + + HADOOP-3665. Modify WritableComparator so that it only creates instances + of the keytype if the type does not define a WritableComparator. Calling + the superclass compare will throw a NullPointerException. Also define + a RawComparator for NullWritable and permit it to be written as a key + to SequenceFiles. (cdouglas) + + HADOOP-3673. Avoid deadlock caused by DataNode RPC receoverBlock(). + (Tsz Wo (Nicholas), SZE via rangadi) + + NEW FEATURES + + HADOOP-3074. Provides a UrlStreamHandler for DFS and other FS, + relying on FileSystem (taton) + + HADOOP-2585. Name-node imports namespace data from a recent checkpoint + accessible via a NFS mount. (shv) + + HADOOP-3061. Writable types for doubles and bytes. (Andrzej + Bialecki via omalley) + + HADOOP-2857. Allow libhdfs to set jvm options. (Craig Macdonald + via omalley) + + HADOOP-3317. Add default port for HDFS namenode. The port in + "hdfs:" URIs now defaults to 8020, so that one may simply use URIs + of the form "hdfs://example.com/dir/file". (cutting) + + HADOOP-2019. Adds support for .tar, .tgz and .tar.gz files in + DistributedCache (Amareshwari Sriramadasu via ddas) + + HADOOP-3058. Add FSNamesystem status metrics. + (Lohit Vjayarenu via rangadi) + + HADOOP-1915. Allow users to specify counters via strings instead + of enumerations. (tomwhite via omalley) + + HADOOP-2065. Delay invalidating corrupt replicas of block until its + is removed from under replicated state. If all replicas are found to + be corrupt, retain all copies and mark the block as corrupt. + (Lohit Vjayarenu via rangadi) + + HADOOP-3221. Adds org.apache.hadoop.mapred.lib.NLineInputFormat, which + splits files into splits each of N lines. N can be specified by + configuration property "mapred.line.input.format.linespermap", which + defaults to 1. (Amareshwari Sriramadasu via ddas) + + HADOOP-3336. Direct a subset of annotated FSNamesystem calls for audit + logging. (cdouglas) + + HADOOP-3400. A new API FileSystem.deleteOnExit() that facilitates + handling of temporary files in HDFS. (dhruba) + + HADOOP-4. Add fuse-dfs to contrib, permitting one to mount an + HDFS filesystem on systems that support FUSE, e.g., Linux. + (Pete Wyckoff via cutting) + + HADOOP-3246. Add FTPFileSystem. (Ankur Goel via cutting) + + HADOOP-3250. Extend FileSystem API to allow appending to files. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3177. Implement Syncable interface for FileSystem. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-1328. Implement user counters in streaming. (tomwhite via + omalley) + + HADOOP-3187. Quotas for namespace management. (Hairong Kuang via ddas) + + HADOOP-3307. Support for Archives in Hadoop. (Mahadev Konar via ddas) + + HADOOP-3460. Add SequenceFileAsBinaryOutputFormat to permit direct + writes of serialized data. (Koji Noguchi via cdouglas) + + HADOOP-3230. Add ability to get counter values from command + line. (tomwhite via omalley) + + HADOOP-930. Add support for native S3 files. (tomwhite via cutting) + + HADOOP-3502. Quota API needs documentation in Forrest. (hairong) + + HADOOP-3413. Allow SequenceFile.Reader to use serialization + framework. (tomwhite via omalley) + + HADOOP-3541. Import of the namespace from a checkpoint documented + in hadoop user guide. (shv) + + IMPROVEMENTS + + HADOOP-3677. Simplify generation stamp upgrade by making is a + local upgrade on datandodes. Deleted distributed upgrade. + (rangadi) + + HADOOP-2928. Remove deprecated FileSystem.getContentLength(). + (Lohit Vijayarenu via rangadi) + + HADOOP-3130. Make the connect timeout smaller for getFile. + (Amar Ramesh Kamat via ddas) + + HADOOP-3160. Remove deprecated exists() from ClientProtocol and + FSNamesystem (Lohit Vjayarenu via rangadi) + + HADOOP-2910. Throttle IPC Clients during bursts of requests or + server slowdown. Clients retry connection for up to 15 minutes + when socket connection times out. (hairong) + + HADOOP-3295. Allow TextOutputFormat to use configurable spearators. + (Zheng Shao via cdouglas). + + HADOOP-3308. Improve QuickSort by excluding values eq the pivot from the + partition. (cdouglas) + + HADOOP-2461. Trim property names in configuration. + (Tsz Wo (Nicholas), SZE via shv) + + HADOOP-2799. Deprecate o.a.h.io.Closable in favor of java.io.Closable. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3345. Enhance the hudson-test-patch target to cleanup messages, + fix minor defects, and add eclipse plugin and python unit tests. (nigel) + + HADOOP-3144. Improve robustness of LineRecordReader by defining a maximum + line length (mapred.linerecordreader.maxlength), thereby avoiding reading + too far into the following split. (Zheng Shao via cdouglas) + + HADOOP-3334. Move lease handling from FSNamesystem into a seperate class. + (Tsz Wo (Nicholas), SZE via rangadi) + + HADOOP-3332. Reduces the amount of logging in Reducer's shuffle phase. + (Devaraj Das) + + HADOOP-3355. Enhances Configuration class to accept hex numbers for getInt + and getLong. (Amareshwari Sriramadasu via ddas) + + HADOOP-3350. Add an argument to distcp to permit the user to limit the + number of maps. (cdouglas) + + HADOOP-3013. Add corrupt block reporting to fsck. + (lohit vijayarenu via cdouglas) + + HADOOP-3377. Remove TaskRunner::replaceAll and replace with equivalent + String::replace. (Brice Arnould via cdouglas) + + HADOOP-3398. Minor improvement to a utility function in that participates + in backoff calculation. (cdouglas) + + HADOOP-3381. Clear referenced when directories are deleted so that + effect of memory leaks are not multiplied. (rangadi) + + HADOOP-2867. Adds the task's CWD to its LD_LIBRARY_PATH. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3232. DU class runs the 'du' command in a seperate thread so + that it does not block user. DataNode misses heartbeats in large + nodes otherwise. (Johan Oskarsson via rangadi) + + HADOOP-3035. During block transfers between datanodes, the receiving + datanode, now can report corrupt replicas received from src node to + the namenode. (Lohit Vijayarenu via rangadi) + + HADOOP-3434. Retain the cause of the bind failure in Server::bind. + (Steve Loughran via cdouglas) + + HADOOP-3429. Increases the size of the buffers used for the communication + for Streaming jobs. (Amareshwari Sriramadasu via ddas) + + HADOOP-3486. Change default for initial block report to 0 seconds + and document it. (Sanjay Radia via omalley) + + HADOOP-3448. Improve the text in the assertion making sure the + layout versions are consistent in the data node. (Steve Loughran + via omalley) + + HADOOP-2095. Improve the Map-Reduce shuffle/merge by cutting down + buffer-copies; changed intermediate sort/merge to use the new IFile format + rather than SequenceFiles and compression of map-outputs is now + implemented by compressing the entire file rather than SequenceFile + compression. Shuffle also has been changed to use a simple byte-buffer + manager rather than the InMemoryFileSystem. + Configuration changes to hadoop-default.xml: + deprecated mapred.map.output.compression.type + (acmurthy) + + HADOOP-236. JobTacker now refuses connection from a task tracker with a + different version number. (Sharad Agarwal via ddas) + + HADOOP-3427. Improves the shuffle scheduler. It now waits for notifications + from shuffle threads when it has scheduled enough, before scheduling more. + (ddas) + + HADOOP-2393. Moves the handling of dir deletions in the tasktracker to + a separate thread. (Amareshwari Sriramadasu via ddas) + + HADOOP-3501. Deprecate InMemoryFileSystem. (cutting via omalley) + + HADOOP-3366. Stall the shuffle while in-memory merge is in progress. + (acmurthy) + + HADOOP-2916. Refactor src structure, but leave package structure alone. + (Raghu Angadi via mukund) + + HADOOP-3492. Add forrest documentation for user archives. + (Mahadev Konar via hairong) + + HADOOP-3467. Improve documentation for FileSystem::deleteOnExit. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3379. Documents stream.non.zero.exit.status.is.failure for Streaming. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3096. Improves documentation about the Task Execution Environment in + the Map-Reduce tutorial. (Amareshwari Sriramadasu via ddas) + + HADOOP-2984. Add forrest documentation for DistCp. (cdouglas) + + HADOOP-3406. Add forrest documentation for Profiling. + (Amareshwari Sriramadasu via ddas) + + HADOOP-2762. Add forrest documentation for controls of memory limits on + hadoop daemons and Map-Reduce tasks. (Amareshwari Sriramadasu via ddas) + + HADOOP-3535. Fix documentation and name of IOUtils.close to + reflect that it should only be used in cleanup contexts. (omalley) + + HADOOP-3593. Updates the mapred tutorial. (ddas) + + HADOOP-3547. Documents the way in which native libraries can be distributed + via the DistributedCache. (Amareshwari Sriramadasu via ddas) + + HADOOP-3606. Updates the Streaming doc. (Amareshwari Sriramadasu via ddas) + + HADOOP-3532. Add jdiff reports to the build scripts. (omalley) + + HADOOP-3100. Develop tests to test the DFS command line interface. (mukund) + + HADOOP-3688. Fix up HDFS docs. (Robert Chansler via hairong) + + OPTIMIZATIONS + + HADOOP-3274. The default constructor of BytesWritable creates empty + byte array. (Tsz Wo (Nicholas), SZE via shv) + + HADOOP-3272. Remove redundant copy of Block object in BlocksMap. + (Lohit Vjayarenu via shv) + + HADOOP-3164. Reduce DataNode CPU usage by using FileChannel.tranferTo(). + On Linux DataNode takes 5 times less CPU while serving data. Results may + vary on other platforms. (rangadi) + + HADOOP-3248. Optimization of saveFSImage. (Dhruba via shv) + + HADOOP-3297. Fetch more task completion events from the job + tracker and task tracker. (ddas via omalley) + + HADOOP-3364. Faster image and log edits loading. (shv) + + HADOOP-3369. Fast block processing during name-node startup. (shv) + + HADOOP-1702. Reduce buffer copies when data is written to DFS. + DataNodes take 30% less CPU while writing data. (rangadi) + + HADOOP-3095. Speed up split generation in the FileInputSplit, + especially for non-HDFS file systems. Deprecates + InputFormat.validateInput. (tomwhite via omalley) + + HADOOP-3552. Add forrest documentation for Hadoop commands. + (Sharad Agarwal via cdouglas) + + BUG FIXES + + HADOOP-2905. 'fsck -move' triggers NPE in NameNode. + (Lohit Vjayarenu via rangadi) + + Increment ClientProtocol.versionID missed by HADOOP-2585. (shv) + + HADOOP-3254. Restructure internal namenode methods that process + heartbeats to use well-defined BlockCommand object(s) instead of + using the base java Object. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-3176. Change lease record when a open-for-write-file + gets renamed. (dhruba) + + HADOOP-3269. Fix a case when namenode fails to restart + while processing a lease record. ((Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-3282. Port issues in TestCheckpoint resolved. (shv) + + HADOOP-3268. file:// URLs issue in TestUrlStreamHandler under Windows. + (taton) + + HADOOP-3127. Deleting files in trash should really remove them. + (Brice Arnould via omalley) + + HADOOP-3300. Fix locking of explicit locks in NetworkTopology. + (tomwhite via omalley) + + HADOOP-3270. Constant DatanodeCommands are stored in static final + immutable variables for better code clarity. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2793. Fix broken links for worst performing shuffle tasks in + the job history page. (Amareshwari Sriramadasu via ddas) + + HADOOP-3313. Avoid unnecessary calls to System.currentTimeMillis + in RPC::Invoker. (cdouglas) + + HADOOP-3318. Recognize "Darwin" as an alias for "Mac OS X" to + support Soylatte. (Sam Pullara via omalley) + + HADOOP-3301. Fix misleading error message when S3 URI hostname + contains an underscore. (tomwhite via omalley) + + HADOOP-3338. Fix Eclipse plugin to compile after HADOOP-544 was + committed. Updated all references to use the new JobID representation. + (taton via nigel) + + HADOOP-3337. Loading FSEditLog was broken by HADOOP-3283 since it + changed Writable serialization of DatanodeInfo. This patch handles it. + (Tsz Wo (Nicholas), SZE via rangadi) + + HADOOP-3101. Prevent JobClient from throwing an exception when printing + usage. (Edward J. Yoon via cdouglas) + + HADOOP-3119. Update javadoc for Text::getBytes to better describe its + behavior. (Tim Nelson via cdouglas) + + HADOOP-2294. Fix documentation in libhdfs to refer to the correct free + function. (Craig Macdonald via cdouglas) + + HADOOP-3335. Prevent the libhdfs build from deleting the wrong + files on make clean. (cutting via omalley) + + HADOOP-2930. Make {start,stop}-balancer.sh work even if hadoop-daemon.sh + is not in the PATH. (Spiros Papadimitriou via hairong) + + HADOOP-3085. Catch Exception in metrics util classes to ensure that + misconfigured metrics don't prevent others from updating. (cdouglas) + + HADOOP-3299. CompositeInputFormat should configure the sub-input + formats. (cdouglas via omalley) + + HADOOP-3309. Lower io.sort.mb and fs.inmemory.size.mb for MiniMRDFSSort + unit test so it passes on Windows. (lohit vijayarenu via cdouglas) + + HADOOP-3348. TestUrlStreamHandler should set URLStreamFactory after + DataNodes are initialized. (Lohit Vijayarenu via rangadi) + + HADOOP-3371. Ignore InstanceAlreadyExistsException from + MBeanUtil::registerMBean. (lohit vijayarenu via cdouglas) + + HADOOP-3349. A file rename was incorrectly changing the name inside a + lease record. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-3365. Removes an unnecessary copy of the key from SegmentDescriptor + to MergeQueue. (Devaraj Das) + + HADOOP-3388. Fix for TestDatanodeBlockScanner to handle blocks with + generation stamps in them. (dhruba) + + HADOOP-3203. Fixes TaskTracker::localizeJob to pass correct file sizes + for the jarfile and the jobfile. (Amareshwari Sriramadasu via ddas) + + HADOOP-3391. Fix a findbugs warning introduced by HADOOP-3248 (rangadi) + + HADOOP-3393. Fix datanode shutdown to call DataBlockScanner::shutdown and + close its log, even if the scanner thread is not running. (lohit vijayarenu + via cdouglas) + + HADOOP-3399. A debug message was logged at info level. (rangadi) + + HADOOP-3396. TestDatanodeBlockScanner occationally fails. + (Lohit Vijayarenu via rangadi) + + HADOOP-3339. Some of the failures on 3rd datanode in DFS write pipelie + are not detected properly. This could lead to hard failure of client's + write operation. (rangadi) + + HADOOP-3409. Namenode should save the root inode into fsimage. (hairong) + + HADOOP-3296. Fix task cache to work for more than two levels in the cache + hierarchy. This also adds a new counter to track cache hits at levels + greater than two. (Amar Kamat via cdouglas) + + HADOOP-3375. Lease paths were sometimes not removed from + LeaseManager.sortedLeasesByPath. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-3424. Values returned by getPartition should be checked to + make sure they are in the range 0 to #reduces - 1 (cdouglas via + omalley) + + HADOOP-3408. Change FSNamesystem to send its metrics as integers to + accommodate collectors that don't support long values. (lohit vijayarenu + via cdouglas) + + HADOOP-3403. Fixes a problem in the JobTracker to do with handling of lost + tasktrackers. (Arun Murthy via ddas) + + HADOOP-1318. Completed maps are not failed if the number of reducers are + zero. (Amareshwari Sriramadasu via ddas). + + HADOOP-3351. Fixes the history viewer tool to not do huge StringBuffer + allocations. (Amareshwari Sriramadasu via ddas) + + HADOOP-3419. Fixes TestFsck to wait for updates to happen before + checking results to make the test more reliable. (Lohit Vijaya + Renu via omalley) + + HADOOP-3259. Makes failure to read system properties due to a + security manager non-fatal. (Edward Yoon via omalley) + + HADOOP-3451. Update libhdfs to use FileSystem::getFileBlockLocations + instead of removed getFileCacheHints. (lohit vijayarenu via cdouglas) + + HADOOP-3401. Update FileBench to set the new + "mapred.work.output.dir" property to work post-3041. (cdouglas via omalley) + + HADOOP-2669. DFSClient locks pendingCreates appropriately. (dhruba) + + HADOOP-3410. Fix KFS implemenation to return correct file + modification time. (Sriram Rao via cutting) + + HADOOP-3340. Fix DFS metrics for BlocksReplicated, HeartbeatsNum, and + BlockReportsAverageTime. (lohit vijayarenu via cdouglas) + + HADOOP-3435. Remove the assuption in the scripts that bash is at + /bin/bash and fix the test patch to require bash instead of sh. + (Brice Arnould via omalley) + + HADOOP-3471. Fix spurious errors from TestIndexedSort and add additional + logging to let failures be reproducible. (cdouglas) + + HADOOP-3443. Avoid copying map output across partitions when renaming a + single spill. (omalley via cdouglas) + + HADOOP-3454. Fix Text::find to search only valid byte ranges. (Chad Whipkey + via cdouglas) + + HADOOP-3417. Removes the static configuration variable, + commandLineConfig from JobClient. Moves the cli parsing from + JobShell to GenericOptionsParser. Thus removes the class + org.apache.hadoop.mapred.JobShell. (Amareshwari Sriramadasu via + ddas) + + HADOOP-2132. Only RUNNING/PREP jobs can be killed. (Jothi Padmanabhan + via ddas) + + HADOOP-3476. Code cleanup in fuse-dfs. + (Peter Wyckoff via dhruba) + + HADOOP-2427. Ensure that the cwd of completed tasks is cleaned-up + correctly on task-completion. (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-2565. Remove DFSPath cache of FileStatus. + (Tsz Wo (Nicholas), SZE via hairong) + + HADOOP-3326. Cleanup the local-fs and in-memory merge in the ReduceTask by + spawing only one thread each for the on-disk and in-memory merge. + (Sharad Agarwal via acmurthy) + + HADOOP-3493. Fix TestStreamingFailure to use FileUtil.fullyDelete to + ensure correct cleanup. (Lohit Vijayarenu via acmurthy) + + HADOOP-3455. Fix NPE in ipc.Client in case of connection failure and + improve its synchronization. (hairong) + + HADOOP-3240. Fix a testcase to not create files in the current directory. + Instead the file is created in the test directory (Mahadev Konar via ddas) + + HADOOP-3496. Fix failure in TestHarFileSystem.testArchives due to change + in HADOOP-3095. (tomwhite) + + HADOOP-3135. Get the system directory from the JobTracker instead of from + the conf. (Subramaniam Krishnan via ddas) + + HADOOP-3503. Fix a race condition when client and namenode start + simultaneous recovery of the same block. (dhruba & Tsz Wo + (Nicholas), SZE) + + HADOOP-3440. Fixes DistributedCache to not create symlinks for paths which + don't have fragments even when createSymLink is true. + (Abhijit Bagri via ddas) + + HADOOP-3463. Hadoop-daemons script should cd to $HADOOP_HOME. (omalley) + + HADOOP-3489. Fix NPE in SafeModeMonitor. (Lohit Vijayarenu via shv) + + HADOOP-3509. Fix NPE in FSNamesystem.close. (Tsz Wo (Nicholas), SZE via + shv) + + HADOOP-3491. Name-node shutdown causes InterruptedException in + ResolutionMonitor. (Lohit Vijayarenu via shv) + + HADOOP-3511. Fixes namenode image to not set the root's quota to an + invalid value when the quota was not saved in the image. (hairong) + + HADOOP-3516. Ensure the JobClient in HadoopArchives is initialized + with a configuration. (Subramaniam Krishnan via omalley) + + HADOOP-3513. Improve NNThroughputBenchmark log messages. (shv) + + HADOOP-3519. Fix NPE in DFS FileSystem rename. (hairong via tomwhite) + + HADOOP-3528. Metrics FilesCreated and files_deleted metrics + do not match. (Lohit via Mahadev) + + HADOOP-3418. When a directory is deleted, any leases that point to files + in the subdirectory are removed. ((Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-3542. Diables the creation of _logs directory for the archives + directory. (Mahadev Konar via ddas) + + HADOOP-3544. Fixes a documentation issue for hadoop archives. + (Mahadev Konar via ddas) + + HADOOP-3517. Fixes a problem in the reducer due to which the last InMemory + merge may be missed. (Arun Murthy via ddas) + + HADOOP-3548. Fixes build.xml to copy all *.jar files to the dist. + (Owen O'Malley via ddas) + + HADOOP-3363. Fix unformatted storage detection in FSImage. (shv) + + HADOOP-3560. Fixes a problem to do with split creation in archives. + (Mahadev Konar via ddas) + + HADOOP-3545. Fixes a overflow problem in archives. + (Mahadev Konar via ddas) + + HADOOP-3561. Prevent the trash from deleting its parent directories. + (cdouglas) + + HADOOP-3575. Fix the clover ant target after package refactoring. + (Nigel Daley via cdouglas) + + HADOOP-3539. Fix the tool path in the bin/hadoop script under + cygwin. (Tsz Wo (Nicholas), Sze via omalley) + + HADOOP-3520. TestDFSUpgradeFromImage triggers a race condition in the + Upgrade Manager. Fixed. (dhruba) + + HADOOP-3586. Provide deprecated, backwards compatibile semantics for the + combiner to be run once and only once on each record. (cdouglas) + + HADOOP-3533. Add deprecated methods to provide API compatibility + between 0.18 and 0.17. Remove the deprecated methods in trunk. (omalley) + + HADOOP-3580. Fixes a problem to do with specifying a har as an input to + a job. (Mahadev Konar via ddas) + + HADOOP-3333. Don't assign a task to a tasktracker that it failed to + execute earlier (used to happen in the case of lost tasktrackers where + the tasktracker would reinitialize and bind to a different port). + (Jothi Padmanabhan and Arun Murthy via ddas) + + HADOOP-3534. Log IOExceptions that happen in closing the name + system when the NameNode shuts down. (Tsz Wo (Nicholas) Sze via omalley) + + HADOOP-3546. TaskTracker re-initialization gets stuck in cleaning up. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3576. Fix NullPointerException when renaming a directory + to its subdirectory. (Tse Wo (Nicholas), SZE via hairong) + + HADOOP-3320. Fix NullPointerException in NetworkTopology.getDistance(). + (hairong) + + HADOOP-3569. KFS input stream read() now correctly reads 1 byte + instead of 4. (Sriram Rao via omalley) + + HADOOP-3599. Fix JobConf::setCombineOnceOnly to modify the instance rather + than a parameter. (Owen O'Malley via cdouglas) + + HADOOP-3590. Null pointer exception in JobTracker when the task tracker is + not yet resolved. (Amar Ramesh Kamat via ddas) + + HADOOP-3603. Fix MapOutputCollector to spill when io.sort.spill.percent is + 1.0 and to detect spills when emitted records write no data. (cdouglas) + + HADOOP-3615. Set DatanodeProtocol.versionID to the correct value. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3559. Fix the libhdfs test script and config to work with the + current semantics. (lohit vijayarenu via cdouglas) + + HADOOP-3480. Need to update Eclipse template to reflect current trunk. + (Brice Arnould via tomwhite) + + HADOOP-3588. Fixed usability issues with archives. (mahadev) + + HADOOP-3635. Uncaught exception in DataBlockScanner. + (Tsz Wo (Nicholas), SZE via hairong) + + HADOOP-3639. Exception when closing DFSClient while multiple files are + open. (Benjamin Gufler via hairong) + + HADOOP-3572. SetQuotas usage interface has some minor bugs. (hairong) + + HADOOP-3649. Fix bug in removing blocks from the corrupted block map. + (Lohit Vijayarenu via shv) + + HADOOP-3604. Work around a JVM synchronization problem observed while + retrieving the address of direct buffers from compression code by obtaining + a lock during this call. (Arun C Murthy via cdouglas) + + HADOOP-3683. Fix dfs metrics to count file listings rather than files + listed. (lohit vijayarenu via cdouglas) + + HADOOP-3597. Fix SortValidator to use filesystems other than the default as + input. Validation job still runs on default fs. + (Jothi Padmanabhan via cdouglas) + + HADOOP-3693. Fix archives, distcp and native library documentation to + conform to style guidelines. (Amareshwari Sriramadasu via cdouglas) + + HADOOP-3653. Fix test-patch target to properly account for Eclipse + classpath jars. (Brice Arnould via nigel) + + HADOOP-3692. Fix documentation for Cluster setup and Quick start guides. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3691. Fix streaming and tutorial docs. (Jothi Padmanabhan via ddas) + + HADOOP-3630. Fix NullPointerException in CompositeRecordReader from empty + sources (cdouglas) + + HADOOP-3706. Fix a ClassLoader issue in the mapred.join Parser that + prevents it from loading user-specified InputFormats. + (Jingkei Ly via cdouglas) + + HADOOP-3718. Fix KFSOutputStream::write(int) to output a byte instead of + an int, per the OutputStream contract. (Sriram Rao via cdouglas) + + HADOOP-3647. Add debug logs to help track down a very occassional, + hard-to-reproduce, bug in shuffle/merge on the reducer. (acmurthy) + + HADOOP-3716. Prevent listStatus in KosmosFileSystem from returning + null for valid, empty directories. (Sriram Rao via cdouglas) + + HADOOP-3752. Fix audit logging to record rename events. (cdouglas) + + HADOOP-3737. Fix CompressedWritable to call Deflater::end to release + compressor memory. (Grant Glouser via cdouglas) + + HADOOP-3670. Fixes JobTracker to clear out split bytes when no longer + required. (Amareshwari Sriramadasu via ddas) + + HADOOP-3755. Update gridmix to work with HOD 0.4 (Runping Qi via cdouglas) + + HADOOP-3743. Fix -libjars, -files, -archives options to work even if + user code does not implement tools. (Amareshwari Sriramadasu via mahadev) + + HADOOP-3774. Fix typos in shell output. (Tsz Wo (Nicholas), SZE via + cdouglas) + + HADOOP-3762. Fixed FileSystem cache to work with the default port. (cutting + via omalley) + + HADOOP-3798. Fix tests compilation. (Mukund Madhugiri via omalley) + + HADOOP-3794. Return modification time instead of zero for KosmosFileSystem. + (Sriram Rao via cdouglas) + + HADOOP-3806. Remove debug statement to stdout from QuickSort. (cdouglas) + + HADOOP-3776. Fix NPE at NameNode when datanode reports a block after it is + deleted at NameNode. (rangadi) + + HADOOP-3537. Disallow adding a datanode to a network topology when its + network location is not resolved. (hairong) + + HADOOP-3571. Fix bug in block removal used in lease recovery. (shv) + + HADOOP-3645. MetricsTimeVaryingRate returns wrong value for + metric_avg_time. (Lohit Vijayarenu via hairong) + + HADOOP-3521. Reverted the missing cast to float for sending Counters' values + to Hadoop metrics which was removed by HADOOP-544. (acmurthy) + + HADOOP-3820. Fixes two problems in the gridmix-env - a syntax error, and a + wrong definition of USE_REAL_DATASET by default. (Arun Murthy via ddas) + + HADOOP-3724. Fixes two problems related to storing and recovering lease + in the fsimage. (dhruba) + + HADOOP-3827. Fixed compression of empty map-outputs. (acmurthy) + + HADOOP-3865. Remove reference to FSNamesystem from metrics preventing + garbage collection. (Lohit Vijayarenu via cdouglas) + + HADOOP-3884. Fix so that Eclipse plugin builds against recent + Eclipse releases. (cutting) + + HADOOP-3837. Streaming jobs report progress status. (dhruba) + + HADOOP-3897. Fix a NPE in secondary namenode. (Lohit Vijayarenu via + cdouglas) + + HADOOP-3901. Fix bin/hadoop to correctly set classpath under cygwin. + (Tsz Wo (Nicholas) Sze via omalley) + + HADOOP-3947. Fix a problem in tasktracker reinitialization. + (Amareshwari Sriramadasu via ddas) + +Release 0.17.3 - Unreleased + + IMPROVEMENTS + + HADOOP-4164. Chinese translation of the documentation. (Xuebing Yan via + omalley) + + BUG FIXES + + HADOOP-4277. Checksum verification was mistakenly disabled for + LocalFileSystem. (Raghu Angadi) + + HADOOP-4271. Checksum input stream can sometimes return invalid + data to the user. (Ning Li via rangadi) + + HADOOP-4318. DistCp should use absolute paths for cleanup. (szetszwo) + + HADOOP-4326. ChecksumFileSystem does not override create(...) correctly. + (szetszwo) + +Release 0.17.2 - 2008-08-11 + + BUG FIXES + + HADOOP-3678. Avoid spurious exceptions logged at DataNode when clients + read from DFS. (rangadi) + + HADOOP-3707. NameNode keeps a count of number of blocks scheduled + to be written to a datanode and uses it to avoid allocating more + blocks than a datanode can hold. (rangadi) + + HADOOP-3760. Fix a bug with HDFS file close() mistakenly introduced + by HADOOP-3681. (Lohit Vijayarenu via rangadi) + + HADOOP-3681. DFSClient can get into an infinite loop while closing + a file if there are some errors. (Lohit Vijayarenu via rangadi) + + HADOOP-3002. Hold off block removal while in safe mode. (shv) + + HADOOP-3685. Unbalanced replication target. (hairong) + + HADOOP-3758. Shutdown datanode on version mismatch instead of retrying + continuously, preventing excessive logging at the namenode. + (lohit vijayarenu via cdouglas) + + HADOOP-3633. Correct exception handling in DataXceiveServer, and throttle + the number of xceiver threads in a data-node. (shv) + + HADOOP-3370. Ensure that the TaskTracker.runningJobs data-structure is + correctly cleaned-up on task completion. (Zheng Shao via acmurthy) + + HADOOP-3813. Fix task-output clean-up on HDFS to use the recursive + FileSystem.delete rather than the FileUtil.fullyDelete. (Amareshwari + Sri Ramadasu via acmurthy) + + HADOOP-3859. Allow the maximum number of xceivers in the data node to + be configurable. (Johan Oskarsson via omalley) + + HADOOP-3931. Fix corner case in the map-side sort that causes some values + to be counted as too large and cause pre-mature spills to disk. Some values + will also bypass the combiner incorrectly. (cdouglas via omalley) + +Release 0.17.1 - 2008-06-23 + + INCOMPATIBLE CHANGES + + HADOOP-3565. Fix the Java serialization, which is not enabled by + default, to clear the state of the serializer between objects. + (tomwhite via omalley) + + IMPROVEMENTS + + HADOOP-3522. Improve documentation on reduce pointing out that + input keys and values will be reused. (omalley) + + HADOOP-3487. Balancer uses thread pools for managing its threads; + therefore provides better resource management. (hairong) + + BUG FIXES + + HADOOP-2159 Namenode stuck in safemode. The counter blockSafe should + not be decremented for invalid blocks. (hairong) + + HADOOP-3472 MapFile.Reader getClosest() function returns incorrect results + when before is true (Todd Lipcon via Stack) + + HADOOP-3442. Limit recursion depth on the stack for QuickSort to prevent + StackOverflowErrors. To avoid O(n*n) cases, when partitioning depth exceeds + a multiple of log(n), change to HeapSort. (cdouglas) + + HADOOP-3477. Fix build to not package contrib/*/bin twice in + distributions. (Adam Heath via cutting) + + HADOOP-3475. Fix MapTask to correctly size the accounting allocation of + io.sort.mb. (cdouglas) + + HADOOP-3550. Fix the serialization data structures in MapTask where the + value lengths are incorrectly calculated. (cdouglas) + + HADOOP-3526. Fix contrib/data_join framework by cloning values retained + in the reduce. (Spyros Blanas via cdouglas) + + HADOOP-1979. Speed up fsck by adding a buffered stream. (Lohit + Vijaya Renu via omalley) + +Release 0.17.0 - 2008-05-18 + + INCOMPATIBLE CHANGES + + HADOOP-2786. Move hbase out of hadoop core + + HADOOP-2345. New HDFS transactions to support appending + to files. Disk layout version changed from -11 to -12. (dhruba) + + HADOOP-2192. Error messages from "dfs mv" command improved. + (Mahadev Konar via dhruba) + + HADOOP-1902. "dfs du" command without any arguments operates on the + current working directory. (Mahadev Konar via dhruba) + + HADOOP-2873. Fixed bad disk format introduced by HADOOP-2345. + Disk layout version changed from -12 to -13. See changelist 630992 + (dhruba) + + HADOOP-1985. This addresses rack-awareness for Map tasks and for + HDFS in a uniform way. (ddas) + + HADOOP-1986. Add support for a general serialization mechanism for + Map Reduce. (tomwhite) + + HADOOP-771. FileSystem.delete() takes an explicit parameter that + specifies whether a recursive delete is intended. + (Mahadev Konar via dhruba) + + HADOOP-2470. Remove getContentLength(String), open(String, long, long) + and isDir(String) from ClientProtocol. ClientProtocol version changed + from 26 to 27. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-2822. Remove deprecated code for classes InputFormatBase and + PhasedFileSystem. (Amareshwari Sriramadasu via enis) + + HADOOP-2116. Changes the layout of the task execution directory. + (Amareshwari Sriramadasu via ddas) + + HADOOP-2828. The following deprecated methods in Configuration.java + have been removed + getObject(String name) + setObject(String name, Object value) + get(String name, Object defaultValue) + set(String name, Object value) + Iterator entries() + (Amareshwari Sriramadasu via ddas) + + HADOOP-2824. Removes one deprecated constructor from MiniMRCluster. + (Amareshwari Sriramadasu via ddas) + + HADOOP-2823. Removes deprecated methods getColumn(), getLine() from + org.apache.hadoop.record.compiler.generated.SimpleCharStream. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3060. Removes one unused constructor argument from MiniMRCluster. + (Amareshwari Sriramadasu via ddas) + + HADOOP-2854. Remove deprecated o.a.h.ipc.Server::getUserInfo(). + (lohit vijayarenu via cdouglas) + + HADOOP-2563. Remove deprecated FileSystem::listPaths. + (lohit vijayarenu via cdouglas) + + HADOOP-2818. Remove deprecated methods in Counters. + (Amareshwari Sriramadasu via tomwhite) + + HADOOP-2831. Remove deprecated o.a.h.dfs.INode::getAbsoluteName() + (lohit vijayarenu via cdouglas) + + HADOOP-2839. Remove deprecated FileSystem::globPaths. + (lohit vijayarenu via cdouglas) + + HADOOP-2634. Deprecate ClientProtocol::exists. + (lohit vijayarenu via cdouglas) + + HADOOP-2410. Make EC2 cluster nodes more independent of each other. + Multiple concurrent EC2 clusters are now supported, and nodes may be + added to a cluster on the fly with new nodes starting in the same EC2 + availability zone as the cluster. Ganglia monitoring and large + instance sizes have also been added. (Chris K Wensel via tomwhite) + + HADOOP-2826. Deprecated FileSplit.getFile(), LineRecordReader.readLine(). + (Amareshwari Sriramadasu via ddas) + + HADOOP-3239. getFileInfo() returns null for non-existing files instead + of throwing FileNotFoundException. (Lohit Vijayarenu via shv) + + HADOOP-3266. Removed HOD changes from CHANGES.txt, as they are now inside + src/contrib/hod (Hemanth Yamijala via ddas) + + HADOOP-3280. Separate the configuration of the virtual memory size + (mapred.child.ulimit) from the jvm heap size, so that 64 bit + streaming applications are supported even when running with 32 bit + jvms. (acmurthy via omalley) + + NEW FEATURES + + HADOOP-1398. Add HBase in-memory block cache. (tomwhite) + + HADOOP-2178. Job History on DFS. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2063. A new parameter to dfs -get command to fetch a file + even if it is corrupted. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2219. A new command "df -count" that counts the number of + files and directories. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2906. Add an OutputFormat capable of using keys, values, and + config params to map records to different output files. + (Runping Qi via cdouglas) + + HADOOP-2346. Utilities to support timeout while writing to sockets. + DFSClient and DataNode sockets have 10min write timeout. (rangadi) + + HADOOP-2951. Add a contrib module that provides a utility to + build or update Lucene indexes using Map/Reduce. (Ning Li via cutting) + + HADOOP-1622. Allow multiple jar files for map reduce. + (Mahadev Konar via dhruba) + + HADOOP-2055. Allows users to set PathFilter on the FileInputFormat. + (Alejandro Abdelnur via ddas) + + HADOOP-2551. More environment variables like HADOOP_NAMENODE_OPTS + for better control of HADOOP_OPTS for each component. (rangadi) + + HADOOP-3001. Add job counters that measure the number of bytes + read and written to HDFS, S3, KFS, and local file systems. (omalley) + + HADOOP-3048. A new Interface and a default implementation to convert + and restore serializations of objects to/from strings. (enis) + + IMPROVEMENTS + + HADOOP-2655. Copy on write for data and metadata files in the + presence of snapshots. Needed for supporting appends to HDFS + files. (dhruba) + + HADOOP-1967. When a Path specifies the same scheme as the default + FileSystem but no authority, the default FileSystem's authority is + used. Also add warnings for old-format FileSystem names, accessor + methods for fs.default.name, and check for null authority in HDFS. + (cutting) + + HADOOP-2895. Let the profiling string be configurable. + (Martin Traverso via cdouglas) + + HADOOP-910. Enables Reduces to do merges for the on-disk map output files + in parallel with their copying. (Amar Kamat via ddas) + + HADOOP-730. Use rename rather than copy for local renames. (cdouglas) + + HADOOP-2810. Updated the Hadoop Core logo. (nigel) + + HADOOP-2057. Streaming should optionally treat a non-zero exit status + of a child process as a failed task. (Rick Cox via tomwhite) + + HADOOP-2765. Enables specifying ulimits for streaming/pipes tasks (ddas) + + HADOOP-2888. Make gridmix scripts more readily configurable and amenable + to automated execution. (Mukund Madhugiri via cdouglas) + + HADOOP-2908. A document that describes the DFS Shell command. + (Mahadev Konar via dhruba) + + HADOOP-2981. Update README.txt to reflect the upcoming use of + cryptography. (omalley) + + HADOOP-2804. Add support to publish CHANGES.txt as HTML when running + the Ant 'docs' target. (nigel) + + HADOOP-2559. Change DFS block placement to allocate the first replica + locally, the second off-rack, and the third intra-rack from the + second. (lohit vijayarenu via cdouglas) + + HADOOP-2939. Make the automated patch testing process an executable + Ant target, test-patch. (nigel) + + HADOOP-2239. Add HsftpFileSystem to permit transferring files over ssl. + (cdouglas) + + HADOOP-2886. Track individual RPC metrics. + (girish vaitheeswaran via dhruba) + + HADOOP-2373. Improvement in safe-mode reporting. (shv) + + HADOOP-3091. Modify FsShell command -put to accept multiple sources. + (Lohit Vijaya Renu via cdouglas) + + HADOOP-3092. Show counter values from job -status command. + (Tom White via ddas) + + HADOOP-1228. Ant task to generate Eclipse project files. (tomwhite) + + HADOOP-3093. Adds Configuration.getStrings(name, default-value) and + the corresponding setStrings. (Amareshwari Sriramadasu via ddas) + + HADOOP-3106. Adds documentation in forrest for debugging. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3099. Add an option to distcp to preserve user, group, and + permission information. (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-2841. Unwrap AccessControlException and FileNotFoundException + from RemoteException for DFSClient. (shv) + + HADOOP-3152. Make index interval configuable when using + MapFileOutputFormat for map-reduce job. (Rong-En Fan via cutting) + + HADOOP-3143. Decrease number of slaves from 4 to 3 in TestMiniMRDFSSort, + as Hudson generates false negatives under the current load. + (Nigel Daley via cdouglas) + + HADOOP-3174. Illustrative example for MultipleFileInputFormat. (Enis + Soztutar via acmurthy) + + HADOOP-2993. Clarify the usage of JAVA_HOME in the Quick Start guide. + (acmurthy via nigel) + + HADOOP-3124. Make DataNode socket write timeout configurable. (rangadi) + + OPTIMIZATIONS + + HADOOP-2790. Fixed inefficient method hasSpeculativeTask by removing + repetitive calls to get the current time and late checking to see if + we want speculation on at all. (omalley) + + HADOOP-2758. Reduce buffer copies in DataNode when data is read from + HDFS, without negatively affecting read throughput. (rangadi) + + HADOOP-2399. Input key and value to combiner and reducer is reused. + (Owen O'Malley via ddas). + + HADOOP-2423. Code optimization in FSNamesystem.mkdirs. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2606. ReplicationMonitor selects data-nodes to replicate directly + from needed replication blocks instead of looking up for the blocks for + each live data-node. (shv) + + HADOOP-2148. Eliminate redundant data-node blockMap lookups. (shv) + + HADOOP-2027. Return the number of bytes in each block in a file + via a single rpc to the namenode to speed up job planning. + (Lohit Vijaya Renu via omalley) + + HADOOP-2902. Replace uses of "fs.default.name" with calls to the + accessor methods added in HADOOP-1967. (cutting) + + HADOOP-2119. Optimize scheduling of jobs with large numbers of + tasks by replacing static arrays with lists of runnable tasks. + (Amar Kamat via omalley) + + HADOOP-2919. Reduce the number of memory copies done during the + map output sorting. Also adds two config variables: + io.sort.spill.percent - the percentages of io.sort.mb that should + cause a spill (default 80%) + io.sort.record.percent - the percent of io.sort.mb that should + hold key/value indexes (default 5%) + (cdouglas via omalley) + + HADOOP-3140. Doesn't add a task in the commit queue if the task hadn't + generated any output. (Amar Kamat via ddas) + + HADOOP-3168. Reduce the amount of logging in streaming to an + exponentially increasing number of records (up to 10,000 + records/log). (Zheng Shao via omalley) + + BUG FIXES + + HADOOP-2195. '-mkdir' behaviour is now closer to Linux shell in case of + errors. (Mahadev Konar via rangadi) + + HADOOP-2190. bring behaviour '-ls' and '-du' closer to Linux shell + commands in case of errors. (Mahadev Konar via rangadi) + + HADOOP-2193. 'fs -rm' and 'fs -rmr' show error message when the target + file does not exist. (Mahadev Konar via rangadi) + + HADOOP-2738 Text is not subclassable because set(Text) and compareTo(Object) + access the other instance's private members directly. (jimk) + + HADOOP-2779. Remove the references to HBase in the build.xml. (omalley) + + HADOOP-2194. dfs cat on a non-existent file throws FileNotFoundException. + (Mahadev Konar via dhruba) + + HADOOP-2767. Fix for NetworkTopology erroneously skipping the last leaf + node on a rack. (Hairong Kuang and Mark Butler via dhruba) + + HADOOP-1593. FsShell works with paths in non-default FileSystem. + (Mahadev Konar via dhruba) + + HADOOP-2191. du and dus command on non-existent directory gives + appropriate error message. (Mahadev Konar via dhruba) + + HADOOP-2832. Remove tabs from code of DFSClient for better + indentation. (dhruba) + + HADOOP-2844. distcp closes file handles for sequence files. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2727. Fix links in Web UI of the hadoop daemons and some docs + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2871. Fixes a problem to do with file: URI in the JobHistory init. + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2800. Deprecate SetFile.Writer constructor not the whole class. + (Johan Oskarsson via tomwhite) + + HADOOP-2891. DFSClient.close() closes all open files. (dhruba) + + HADOOP-2845. Fix dfsadmin disk utilization report on Solaris. + (Martin Traverso via tomwhite) + + HADOOP-2912. MiniDFSCluster restart should wait for namenode to exit + safemode. This was causing TestFsck to fail. (Mahadev Konar via dhruba) + + HADOOP-2820. The following classes in streaming are removed : + StreamLineRecordReader StreamOutputFormat StreamSequenceRecordReader. + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2819. The following methods in JobConf are removed: + getInputKeyClass() setInputKeyClass getInputValueClass() + setInputValueClass(Class theClass) setSpeculativeExecution + getSpeculativeExecution() (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2817. Removes deprecated mapred.tasktracker.tasks.maximum and + ClusterStatus.getMaxTasks(). (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2821. Removes deprecated ShellUtil and ToolBase classes from + the util package. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2934. The namenode was encountreing a NPE while loading + leases from the fsimage. Fixed. (dhruba) + + HADOOP-2938. Some fs commands did not glob paths. + (Tsz Wo (Nicholas), SZE via rangadi) + + HADOOP-2943. Compression of intermediate map output causes failures + in the merge. (cdouglas) + + HADOOP-2870. DataNode and NameNode closes all connections while + shutting down. (Hairong Kuang via dhruba) + + HADOOP-2973. Fix TestLocalDFS for Windows platform. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2971. select multiple times if it returns early in + SocketIOWithTimeout. (rangadi) + + HADOOP-2955. Fix TestCrcCorruption test failures caused by HADOOP-2758 + (rangadi) + + HADOOP-2657. A flush call on the DFSOutputStream flushes the last + partial CRC chunk too. (dhruba) + + HADOOP-2974. IPC unit tests used "0.0.0.0" to connect to server, which + is not always supported. (rangadi) + + HADOOP-2996. Fixes uses of StringBuffer in StreamUtils class. + (Dave Brosius via ddas) + + HADOOP-2995. Fixes StreamBaseRecordReader's getProgress to return a + floating point number. (Dave Brosius via ddas) + + HADOOP-2972. Fix for a NPE in FSDataset.invalidate. + (Mahadev Konar via dhruba) + + HADOOP-2994. Code cleanup for DFSClient: remove redundant + conversions from string to string. (Dave Brosius via dhruba) + + HADOOP-3009. TestFileCreation sometimes fails because restarting + minidfscluster sometimes creates datanodes with ports that are + different from their original instance. (dhruba) + + HADOOP-2992. Distributed Upgrade framework works correctly with + more than one upgrade object. (Konstantin Shvachko via dhruba) + + HADOOP-2679. Fix a typo in libhdfs. (Jason via dhruba) + + HADOOP-2976. When a lease expires, the Namenode ensures that + blocks of the file are adequately replicated. (dhruba) + + HADOOP-2901. Fixes the creation of info servers in the JobClient + and JobTracker. Removes the creation from JobClient and removes + additional info server from the JobTracker. Also adds the command + line utility to view the history files (HADOOP-2896), and fixes + bugs in JSPs to do with analysis - HADOOP-2742, HADOOP-2792. + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2890. If different datanodes report the same block but + with different sizes to the namenode, the namenode picks the + replica(s) with the largest size as the only valid replica(s). (dhruba) + + HADOOP-2825. Deprecated MapOutputLocation.getFile() is removed. + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2806. Fixes a streaming document. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3008. SocketIOWithTimeout throws InterruptedIOException if the + thread is interrupted while it is waiting. (rangadi) + + HADOOP-3006. Fix wrong packet size reported by DataNode when a block + is being replicated. (rangadi) + + HADOOP-3029. Datanode prints log message "firstbadlink" only if + it detects a bad connection to another datanode in the pipeline. (dhruba) + + HADOOP-3030. Release reserved space for file in InMemoryFileSystem if + checksum reservation fails. (Devaraj Das via cdouglas) + + HADOOP-3036. Fix findbugs warnings in UpgradeUtilities. (Konstantin + Shvachko via cdouglas) + + HADOOP-3025. ChecksumFileSystem supports the delete method with + the recursive flag. (Mahadev Konar via dhruba) + + HADOOP-3012. dfs -mv file to user home directory throws exception if + the user home directory does not exist. (Mahadev Konar via dhruba) + + HADOOP-3066. Should not require superuser privilege to query if hdfs is in + safe mode (jimk) + + HADOOP-3040. If the input line starts with the separator char, the key + is set as empty. (Amareshwari Sriramadasu via ddas) + + HADOOP-3080. Removes flush calls from JobHistory. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3086. Adds the testcase missed during commit of hadoop-3040. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3046. Fix the raw comparators for Text and BytesWritables + to use the provided length rather than recompute it. (omalley) + + HADOOP-3094. Fix BytesWritable.toString to avoid extending the sign bit + (Owen O'Malley via cdouglas) + + HADOOP-3067. DFSInputStream's position read does not close the sockets. + (rangadi) + + HADOOP-3073. close() on SocketInputStream or SocketOutputStream should + close the underlying channel. (rangadi) + + HADOOP-3087. Fixes a problem to do with refreshing of loadHistory.jsp. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3065. Better logging message if the rack location of a datanode + cannot be determined. (Devaraj Das via dhruba) + + HADOOP-3064. Commas in a file path should not be treated as delimiters. + (Hairong Kuang via shv) + + HADOOP-2997. Adds test for non-writable serialier. Also fixes a problem + introduced by HADOOP-2399. (Tom White via ddas) + + HADOOP-3114. Fix TestDFSShell on Windows. (Lohit Vijaya Renu via cdouglas) + + HADOOP-3118. Fix Namenode NPE while loading fsimage after a cluster + upgrade from older disk format. (dhruba) + + HADOOP-3161. Fix FIleUtil.HardLink.getLinkCount on Mac OS. (nigel + via omalley) + + HADOOP-2927. Fix TestDU to acurately calculate the expected file size. + (shv via nigel) + + HADOOP-3123. Fix the native library build scripts to work on Solaris. + (tomwhite via omalley) + + HADOOP-3089. Streaming should accept stderr from task before + first key arrives. (Rick Cox via tomwhite) + + HADOOP-3146. A DFSOutputStream.flush method is renamed as + DFSOutputStream.fsync. (dhruba) + + HADOOP-3165. -put/-copyFromLocal did not treat input file "-" as stdin. + (Lohit Vijayarenu via rangadi) + + HADOOP-3041. Deprecate JobConf.setOutputPath and JobConf.getOutputPath. + Deprecate OutputFormatBase. Add FileOutputFormat. Existing output formats + extending OutputFormatBase, now extend FileOutputFormat. Add the following + APIs in FileOutputFormat: setOutputPath, getOutputPath, getWorkOutputPath. + (Amareshwari Sriramadasu via nigel) + + HADOOP-3083. The fsimage does not store leases. This would have to be + reworked in the next release to support appends. (dhruba) + + HADOOP-3166. Fix an ArrayIndexOutOfBoundsException in the spill thread + and make exception handling more promiscuous to catch this condition. + (cdouglas) + + HADOOP-3050. DataNode sends one and only one block report after + it registers with the namenode. (Hairong Kuang) + + HADOOP-3044. NNBench sets the right configuration for the mapper. + (Hairong Kuang) + + HADOOP-3178. Fix GridMix scripts for small and medium jobs + to handle input paths differently. (Mukund Madhugiri via nigel) + + HADOOP-1911. Fix an infinite loop in DFSClient when all replicas of a + block are bad (cdouglas) + + HADOOP-3157. Fix path handling in DistributedCache and TestMiniMRLocalFS. + (Doug Cutting via rangadi) + + HADOOP-3018. Fix the eclipse plug-in contrib wrt removed deprecated + methods (taton) + + HADOOP-3183. Fix TestJobShell to use 'ls' instead of java.io.File::exists + since cygwin symlinks are unsupported. + (Mahadev konar via cdouglas) + + HADOOP-3175. Fix FsShell.CommandFormat to handle "-" in arguments. + (Edward J. Yoon via rangadi) + + HADOOP-3220. Safemode message corrected. (shv) + + HADOOP-3208. Fix WritableDeserializer to set the Configuration on + deserialized Writables. (Enis Soztutar via cdouglas) + + HADOOP-3224. 'dfs -du /dir' does not return correct size. + (Lohit Vjayarenu via rangadi) + + HADOOP-3223. Fix typo in help message for -chmod. (rangadi) + + HADOOP-1373. checkPath() should ignore case when it compares authoriy. + (Edward J. Yoon via rangadi) + + HADOOP-3204. Fixes a problem to do with ReduceTask's LocalFSMerger not + catching Throwable. (Amar Ramesh Kamat via ddas) + + HADOOP-3229. Report progress when collecting records from the mapper and + the combiner. (Doug Cutting via cdouglas) + + HADOOP-3225. Unwrapping methods of RemoteException should initialize + detailedMassage field. (Mahadev Konar, shv, cdouglas) + + HADOOP-3247. Fix gridmix scripts to use the correct globbing syntax and + change maxentToSameCluster to run the correct number of jobs. + (Runping Qi via cdouglas) + + HADOOP-3242. Fix the RecordReader of SequenceFileAsBinaryInputFormat to + correctly read from the start of the split and not the beginning of the + file. (cdouglas via acmurthy) + + HADOOP-3256. Encodes the job name used in the filename for history files. + (Arun Murthy via ddas) + + HADOOP-3162. Ensure that comma-separated input paths are treated correctly + as multiple input paths. (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-3263. Ensure that the job-history log file always follows the + pattern of hostname_timestamp_jobid_username_jobname even if username + and/or jobname are not specfied. This helps to avoid wrong assumptions + made about the job-history log filename in jobhistory.jsp. (acmurthy) + + HADOOP-3251. Fixes getFilesystemName in JobTracker and LocalJobRunner to + use FileSystem.getUri instead of FileSystem.getName. (Arun Murthy via ddas) + + HADOOP-3237. Fixes TestDFSShell.testErrOutPut on Windows platform. + (Mahadev Konar via ddas) + + HADOOP-3279. TaskTracker checks for SUCCEEDED task status in addition to + COMMIT_PENDING status when it fails maps due to lost map. + (Devaraj Das) + + HADOOP-3286. Prevent collisions in gridmix output dirs by increasing the + granularity of the timestamp. (Runping Qi via cdouglas) + + HADOOP-3285. Fix input split locality when the splits align to + fs blocks. (omalley) + + HADOOP-3372. Fix heap management in streaming tests. (Arun Murthy via + cdouglas) + + HADOOP-3031. Fix javac warnings in test classes. (cdouglas) + + HADOOP-3382. Fix memory leak when files are not cleanly closed (rangadi) + + HADOOP-3322. Fix to push MetricsRecord for rpc metrics. (Eric Yang via + mukund) + +Release 0.16.4 - 2008-05-05 + + BUG FIXES + + HADOOP-3138. DFS mkdirs() should not throw an exception if the directory + already exists. (rangadi via mukund) + + HADOOP-3294. Fix distcp to check the destination length and retry the copy + if it doesn't match the src length. (Tsz Wo (Nicholas), SZE via mukund) + + HADOOP-3186. Fix incorrect permission checkding for mv and renameTo + in HDFS. (Tsz Wo (Nicholas), SZE via mukund) + +Release 0.16.3 - 2008-04-16 + + BUG FIXES + + HADOOP-3010. Fix ConcurrentModificationException in ipc.Server.Responder. + (rangadi) + + HADOOP-3154. Catch all Throwables from the SpillThread in MapTask, rather + than IOExceptions only. (ddas via cdouglas) + + HADOOP-3159. Avoid file system cache being overwritten whenever + configuration is modified. (Tsz Wo (Nicholas), SZE via hairong) + + HADOOP-3139. Remove the consistency check for the FileSystem cache in + closeAll() that causes spurious warnings and a deadlock. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3195. Fix TestFileSystem to be deterministic. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-3069. Primary name-node should not truncate image when transferring + it from the secondary. (shv) + + HADOOP-3182. Change permissions of the job-submission directory to 777 + from 733 to ensure sharing of HOD clusters works correctly. (Tsz Wo + (Nicholas), Sze and Amareshwari Sri Ramadasu via acmurthy) + +Release 0.16.2 - 2008-04-02 + + BUG FIXES + + HADOOP-3011. Prohibit distcp from overwriting directories on the + destination filesystem with files. (cdouglas) + + HADOOP-3033. The BlockReceiver thread in the datanode writes data to + the block file, changes file position (if needed) and flushes all by + itself. The PacketResponder thread does not flush block file. (dhruba) + + HADOOP-2978. Fixes the JobHistory log format for counters. + (Runping Qi via ddas) + + HADOOP-2985. Fixes LocalJobRunner to tolerate null job output path. + Also makes the _temporary a constant in MRConstants.java. + (Amareshwari Sriramadasu via ddas) + + HADOOP-3003. FileSystem cache key is updated after a + FileSystem object is created. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-3042. Updates the Javadoc in JobConf.getOutputPath to reflect + the actual temporary path. (Amareshwari Sriramadasu via ddas) + + HADOOP-3007. Tolerate mirror failures while DataNode is replicating + blocks as it used to before. (rangadi) + + HADOOP-2944. Fixes a "Run on Hadoop" wizard NPE when creating a + Location from the wizard. (taton) + + HADOOP-3049. Fixes a problem in MultiThreadedMapRunner to do with + catching RuntimeExceptions. (Alejandro Abdelnur via ddas) + + HADOOP-3039. Fixes a problem to do with exceptions in tasks not + killing jobs. (Amareshwari Sriramadasu via ddas) + + HADOOP-3027. Fixes a problem to do with adding a shutdown hook in + FileSystem. (Amareshwari Sriramadasu via ddas) + + HADOOP-3056. Fix distcp when the target is an empty directory by + making sure the directory is created first. (cdouglas and acmurthy + via omalley) + + HADOOP-3070. Protect the trash emptier thread from null pointer + exceptions. (Koji Noguchi via omalley) + + HADOOP-3084. Fix HftpFileSystem to work for zero-lenghth files. + (cdouglas) + + HADOOP-3107. Fix NPE when fsck invokes getListings. (dhruba) + + HADOOP-3104. Limit MultithreadedMapRunner to have a fixed length queue + between the RecordReader and the map threads. (Alejandro Abdelnur via + omalley) + + HADOOP-2833. Do not use "Dr. Who" as the default user in JobClient. + A valid user name is required. (Tsz Wo (Nicholas), SZE via rangadi) + + HADOOP-3128. Throw RemoteException in setPermissions and setOwner of + DistributedFileSystem. (shv via nigel) + +Release 0.16.1 - 2008-03-13 + + INCOMPATIBLE CHANGES + + HADOOP-2869. Deprecate SequenceFile.setCompressionType in favor of + SequenceFile.createWriter, SequenceFileOutputFormat.setCompressionType, + and JobConf.setMapOutputCompressionType. (Arun C Murthy via cdouglas) + Configuration changes to hadoop-default.xml: + deprecated io.seqfile.compression.type + + IMPROVEMENTS + + HADOOP-2371. User guide for file permissions in HDFS. + (Robert Chansler via rangadi) + + HADOOP-3098. Allow more characters in user and group names while + using -chown and -chgrp commands. (rangadi) + + BUG FIXES + + HADOOP-2789. Race condition in IPC Server Responder that could close + connections early. (Raghu Angadi) + + HADOOP-2785. minor. Fix a typo in Datanode block verification + (Raghu Angadi) + + HADOOP-2788. minor. Fix help message for chgrp shell command (Raghu Angadi). + + HADOOP-1188. fstime file is updated when a storage directory containing + namespace image becomes inaccessible. (shv) + + HADOOP-2787. An application can set a configuration variable named + dfs.umask to set the umask that is used by DFS. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2780. The default socket buffer size for DataNodes is 128K. + (dhruba) + + HADOOP-2716. Superuser privileges for the Balancer. + (Tsz Wo (Nicholas), SZE via shv) + + HADOOP-2754. Filter out .crc files from local file system listing. + (Hairong Kuang via shv) + + HADOOP-2733. Fix compiler warnings in test code. + (Tsz Wo (Nicholas), SZE via cdouglas) + + HADOOP-2725. Modify distcp to avoid leaving partially copied files at + the destination after encountering an error. (Tsz Wo (Nicholas), SZE + via cdouglas) + + HADOOP-2391. Cleanup job output directory before declaring a job as + SUCCESSFUL. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2808. Minor fix to FileUtil::copy to mind the overwrite + formal. (cdouglas) + + HADOOP-2683. Moving UGI out of the RPC Server. + (Tsz Wo (Nicholas), SZE via shv) + + HADOOP-2814. Fix for NPE in datanode in unit test TestDataTransferProtocol. + (Raghu Angadi via dhruba) + + HADOOP-2811. Dump of counters in job history does not add comma between + groups. (runping via omalley) + + HADOOP-2735. Enables setting TMPDIR for tasks. + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2843. Fix protections on map-side join classes to enable derivation. + (cdouglas via omalley) + + HADOOP-2840. Fix gridmix scripts to correctly invoke the java sort through + the proper jar. (Mukund Madhugiri via cdouglas) + + HADOOP-2769. TestNNThroughputBnechmark should not use a fixed port for + the namenode http port. (omalley) + + HADOOP-2852. Update gridmix benchmark to avoid an artifically long tail. + (cdouglas) + + HADOOP-2894. Fix a problem to do with tasktrackers failing to connect to + JobTracker upon reinitialization. (Owen O'Malley via ddas). + + HADOOP-2903. Fix exception generated by Metrics while using pushMetric(). + (girish vaitheeswaran via dhruba) + + HADOOP-2904. Fix to RPC metrics to log the correct host name. + (girish vaitheeswaran via dhruba) + + HADOOP-2918. Improve error logging so that dfs writes failure with + "No lease on file" can be diagnosed. (dhruba) + + HADOOP-2923. Add SequenceFileAsBinaryInputFormat, which was + missed in the commit for HADOOP-2603. (cdouglas via omalley) + + HADOOP-2931. IOException thrown by DFSOutputStream had wrong stack + trace in some cases. (Michael Bieniosek via rangadi) + + HADOOP-2883. Write failures and data corruptions on HDFS files. + The write timeout is back to what it was on 0.15 release. Also, the + datnodes flushes the block file buffered output stream before + sending a positive ack for the packet back to the client. (dhruba) + + HADOOP-2756. NPE in DFSClient while closing DFSOutputStreams + under load. (rangadi) + + HADOOP-2958. Fixed FileBench which broke due to HADOOP-2391 which performs + a check for existence of the output directory and a trivial bug in + GenericMRLoadGenerator where min/max word lenghts were identical since + they were looking at the same config variables (Chris Douglas via + acmurthy) + + HADOOP-2915. Fixed FileSystem.CACHE so that a username is included + in the cache key. (Tsz Wo (Nicholas), SZE via nigel) + + HADOOP-2813. TestDU unit test uses its own directory to run its + sequence of tests. (Mahadev Konar via dhruba) + +Release 0.16.0 - 2008-02-07 + + INCOMPATIBLE CHANGES + + HADOOP-1245. Use the mapred.tasktracker.tasks.maximum value + configured on each tasktracker when allocating tasks, instead of + the value configured on the jobtracker. InterTrackerProtocol + version changed from 5 to 6. (Michael Bieniosek via omalley) + + HADOOP-1843. Removed code from Configuration and JobConf deprecated by + HADOOP-785 and a minor fix to Configuration.toString. Specifically the + important change is that mapred-default.xml is no longer supported and + Configuration no longer supports the notion of default/final resources. + (acmurthy) + + HADOOP-1302. Remove deprecated abacus code from the contrib directory. + This also fixes a configuration bug in AggregateWordCount, so that the + job now works. (enis) + + HADOOP-2288. Enhance FileSystem API to support access control. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2184. RPC Support for user permissions and authentication. + (Raghu Angadi via dhruba) + + HADOOP-2185. RPC Server uses any available port if the specified + port is zero. Otherwise it uses the specified port. Also combines + the configuration attributes for the servers' bind address and + port from "x.x.x.x" and "y" to "x.x.x.x:y". + Deprecated configuration variables: + dfs.info.bindAddress + dfs.info.port + dfs.datanode.bindAddress + dfs.datanode.port + dfs.datanode.info.bindAdress + dfs.datanode.info.port + dfs.secondary.info.bindAddress + dfs.secondary.info.port + mapred.job.tracker.info.bindAddress + mapred.job.tracker.info.port + mapred.task.tracker.report.bindAddress + tasktracker.http.bindAddress + tasktracker.http.port + New configuration variables (post HADOOP-2404): + dfs.secondary.http.address + dfs.datanode.address + dfs.datanode.http.address + dfs.http.address + mapred.job.tracker.http.address + mapred.task.tracker.report.address + mapred.task.tracker.http.address + (Konstantin Shvachko via dhruba) + + HADOOP-2401. Only the current leaseholder can abandon a block for + a HDFS file. ClientProtocol version changed from 20 to 21. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2381. Support permission information in FileStatus. Client + Protocol version changed from 21 to 22. (Raghu Angadi via dhruba) + + HADOOP-2110. Block report processing creates fewer transient objects. + Datanode Protocol version changed from 10 to 11. + (Sanjay Radia via dhruba) + + HADOOP-2567. Add FileSystem#getHomeDirectory(), which returns the + user's home directory in a FileSystem as a fully-qualified path. + FileSystem#getWorkingDirectory() is also changed to return a + fully-qualified path, which can break applications that attempt + to, e.g., pass LocalFileSystem#getWorkingDir().toString() directly + to java.io methods that accept file names. (cutting) + + HADOOP-2514. Change trash feature to maintain a per-user trash + directory, named ".Trash" in the user's home directory. The + "fs.trash.root" parameter is no longer used. Full source paths + are also no longer reproduced within the trash. + + HADOOP-2012. Periodic data verification on Datanodes. + (Raghu Angadi via dhruba) + + HADOOP-1707. The DFSClient does not use a local disk file to cache + writes to a HDFS file. Changed Data Transfer Version from 7 to 8. + (dhruba) + + HADOOP-2652. Fix permission issues for HftpFileSystem. This is an + incompatible change since distcp may not be able to copy files + from cluster A (compiled with this patch) to cluster B (compiled + with previous versions). (Tsz Wo (Nicholas), SZE via dhruba) + + NEW FEATURES + + HADOOP-1857. Ability to run a script when a task fails to capture stack + traces. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2299. Defination of a login interface. A simple implementation for + Unix users and groups. (Hairong Kuang via dhruba) + + HADOOP-1652. A utility to balance data among datanodes in a HDFS cluster. + (Hairong Kuang via dhruba) + + HADOOP-2085. A library to support map-side joins of consistently + partitioned and sorted data sets. (Chris Douglas via omalley) + + HADOOP-2336. Shell commands to modify file permissions. (rangadi) + + HADOOP-1298. Implement file permissions for HDFS. + (Tsz Wo (Nicholas) & taton via cutting) + + HADOOP-2447. HDFS can be configured to limit the total number of + objects (inodes and blocks) in the file system. (dhruba) + + HADOOP-2487. Added an option to get statuses for all submitted/run jobs. + This information can be used to develop tools for analysing jobs. + (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-1873. Implement user permissions for Map/Reduce framework. + (Hairong Kuang via shv) + + HADOOP-2532. Add to MapFile a getClosest method that returns the key + that comes just before if the key is not present. (stack via tomwhite) + + HADOOP-1883. Add versioning to Record I/O. (Vivek Ratan via ddas) + + HADOOP-2603. Add SeqeunceFileAsBinaryInputFormat, which reads + sequence files as BytesWritable/BytesWritable regardless of the + key and value types used to write the file. (cdouglas via omalley) + + HADOOP-2367. Add ability to profile a subset of map/reduce tasks and fetch + the result to the local filesystem of the submitting application. Also + includes a general IntegerRanges extension to Configuration for setting + positive, ranged parameters. (Owen O'Malley via cdouglas) + + IMPROVEMENTS + + HADOOP-2045. Change committer list on website to a table, so that + folks can list their organization, timezone, etc. (cutting) + + HADOOP-2058. Facilitate creating new datanodes dynamically in + MiniDFSCluster. (Hairong Kuang via dhruba) + + HADOOP-1855. fsck verifies block placement policies and reports + violations. (Konstantin Shvachko via dhruba) + + HADOOP-1604. An system administrator can finalize namenode upgrades + without running the cluster. (Konstantin Shvachko via dhruba) + + HADOOP-1839. Link-ify the Pending/Running/Complete/Killed grid in + jobdetails.jsp to help quickly narrow down and see categorized TIPs' + details via jobtasks.jsp. (Amar Kamat via acmurthy) + + HADOOP-1210. Log counters in job history. (Owen O'Malley via ddas) + + HADOOP-1912. Datanode has two new commands COPY and REPLACE. These are + needed for supporting data rebalance. (Hairong Kuang via dhruba) + + HADOOP-2086. This patch adds the ability to add dependencies to a job + (run via JobControl) after construction. (Adrian Woodhead via ddas) + + HADOOP-1185. Support changing the logging level of a server without + restarting the server. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2134. Remove developer-centric requirements from overview.html and + keep it end-user focussed, specifically sections related to subversion and + building Hadoop. (Jim Kellerman via acmurthy) + + HADOOP-1989. Support simulated DataNodes. This helps creating large virtual + clusters for testing purposes. (Sanjay Radia via dhruba) + + HADOOP-1274. Support different number of mappers and reducers per + TaskTracker to allow administrators to better configure and utilize + heterogenous clusters. + Configuration changes to hadoop-default.xml: + add mapred.tasktracker.map.tasks.maximum (default value of 2) + add mapred.tasktracker.reduce.tasks.maximum (default value of 2) + remove mapred.tasktracker.tasks.maximum (deprecated for 0.16.0) + (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-2104. Adds a description to the ant targets. This makes the + output of "ant -projecthelp" sensible. (Chris Douglas via ddas) + + HADOOP-2127. Added a pipes sort example to benchmark trivial pipes + application versus trivial java application. (omalley via acmurthy) + + HADOOP-2113. A new shell command "dfs -text" to view the contents of + a gziped or SequenceFile. (Chris Douglas via dhruba) + + HADOOP-2207. Add a "package" target for contrib modules that + permits each to determine what files are copied into release + builds. (stack via cutting) + + HADOOP-1984. Makes the backoff for failed fetches exponential. + Earlier, it was a random backoff from an interval. + (Amar Kamat via ddas) + + HADOOP-1327. Include website documentation for streaming. (Rob Weltman + via omalley) + + HADOOP-2000. Rewrite NNBench to measure namenode performance accurately. + It now uses the map-reduce framework for load generation. + (Mukund Madhugiri via dhruba) + + HADOOP-2248. Speeds up the framework w.r.t Counters. Also has API + updates to the Counters part. (Owen O'Malley via ddas) + + HADOOP-2326. The initial block report at Datanode startup time has + a random backoff period. (Sanjay Radia via dhruba) + + HADOOP-2432. HDFS includes the name of the file while throwing + "File does not exist" exception. (Jim Kellerman via dhruba) + + HADOOP-2457. Added a 'forrest.home' property to the 'docs' target in + build.xml. (acmurthy) + + HADOOP-2149. A new benchmark for three name-node operation: file create, + open, and block report, to evaluate the name-node performance + for optimizations or new features. (Konstantin Shvachko via shv) + + HADOOP-2466. Change FileInputFormat.computeSplitSize to a protected + non-static method to allow sub-classes to provide alternate + implementations. (Alejandro Abdelnur via acmurthy) + + HADOOP-2425. Change TextOutputFormat to handle Text specifically for better + performance. Make NullWritable implement Comparable. Make TextOutputFormat + treat NullWritable like null. (omalley) + + HADOOP-1719. Improves the utilization of shuffle copier threads. + (Amar Kamat via ddas) + + HADOOP-2390. Added documentation for user-controls for intermediate + map-outputs & final job-outputs and native-hadoop libraries. (acmurthy) + + HADOOP-1660. Add the cwd of the map/reduce task to the java.library.path + of the child-jvm to support loading of native libraries distributed via + the DistributedCache. (acmurthy) + + HADOOP-2285. Speeds up TextInputFormat. Also includes updates to the + Text API. (Owen O'Malley via cdouglas) + + HADOOP-2233. Adds a generic load generator for modeling MR jobs. (cdouglas) + + HADOOP-2369. Adds a set of scripts for simulating a mix of user map/reduce + workloads. (Runping Qi via cdouglas) + + HADOOP-2547. Removes use of a 'magic number' in build.xml. + (Hrishikesh via nigel) + + HADOOP-2268. Fix org.apache.hadoop.mapred.jobcontrol classes to use the + List/Map interfaces rather than concrete ArrayList/HashMap classes + internally. (Adrian Woodhead via acmurthy) + + HADOOP-2406. Add a benchmark for measuring read/write performance through + the InputFormat interface, particularly with compression. (cdouglas) + + HADOOP-2131. Allow finer-grained control over speculative-execution. Now + users can set it for maps and reduces independently. + Configuration changes to hadoop-default.xml: + deprecated mapred.speculative.execution + add mapred.map.tasks.speculative.execution + add mapred.reduce.tasks.speculative.execution + (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-1965. Interleave sort/spill in teh map-task along with calls to the + Mapper.map method. This is done by splitting the 'io.sort.mb' buffer into + two and using one half for collecting map-outputs and the other half for + sort/spill. (Amar Kamat via acmurthy) + + HADOOP-2464. Unit tests for chmod, chown, and chgrp using DFS. + (Raghu Angadi) + + HADOOP-1876. Persist statuses of completed jobs in HDFS so that the + JobClient can query and get information about decommissioned jobs and also + across JobTracker restarts. + Configuration changes to hadoop-default.xml: + add mapred.job.tracker.persist.jobstatus.active (default value of false) + add mapred.job.tracker.persist.jobstatus.hours (default value of 0) + add mapred.job.tracker.persist.jobstatus.dir (default value of + /jobtracker/jobsInfo) + (Alejandro Abdelnur via acmurthy) + + HADOOP-2077. Added version and build information to STARTUP_MSG for all + hadoop daemons to aid error-reporting, debugging etc. (acmurthy) + + HADOOP-2398. Additional instrumentation for NameNode and RPC server. + Add support for accessing instrumentation statistics via JMX. + (Sanjay radia via dhruba) + + HADOOP-2449. A return of the non-MR version of NNBench. + (Sanjay Radia via shv) + + HADOOP-1989. Remove 'datanodecluster' command from bin/hadoop. + (Sanjay Radia via shv) + + HADOOP-1742. Improve JavaDoc documentation for ClientProtocol, DFSClient, + and FSNamesystem. (Konstantin Shvachko) + + HADOOP-2298. Add Ant target for a binary-only distribution. + (Hrishikesh via nigel) + + HADOOP-2509. Add Ant target for Rat report (Apache license header + reports). (Hrishikesh via nigel) + + HADOOP-2469. WritableUtils.clone should take a Configuration + instead of a JobConf. (stack via omalley) + + HADOOP-2659. Introduce superuser permissions for admin operations. + (Tsz Wo (Nicholas), SZE via shv) + + HADOOP-2596. Added a SequenceFile.createWriter api which allows the user + to specify the blocksize, replication factor and the buffersize to be + used for the underlying HDFS file. (Alejandro Abdelnur via acmurthy) + + HADOOP-2431. Test HDFS File Permissions. (Hairong Kuang via shv) + + HADOOP-2232. Add an option to disable Nagle's algorithm in the IPC stack. + (Clint Morgan via cdouglas) + + HADOOP-2342. Created a micro-benchmark for measuring + local-file versus hdfs reads. (Owen O'Malley via nigel) + + HADOOP-2529. First version of HDFS User Guide. (Raghu Angadi) + + HADOOP-2690. Add jar-test target to build.xml, separating compilation + and packaging of the test classes. (Enis Soztutar via cdouglas) + + OPTIMIZATIONS + + HADOOP-1898. Release the lock protecting the last time of the last stack + dump while the dump is happening. (Amareshwari Sri Ramadasu via omalley) + + HADOOP-1900. Makes the heartbeat and task event queries interval + dependent on the cluster size. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2208. Counter update frequency (from TaskTracker to JobTracker) is + capped at 1 minute. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2284. Reduce the number of progress updates during the sorting in + the map task. (Amar Kamat via ddas) + + BUG FIXES + + HADOOP-2583. Fixes a bug in the Eclipse plug-in UI to edit locations. + Plug-in version is now synchronized with Hadoop version. + + HADOOP-2100. Remove faulty check for existence of $HADOOP_PID_DIR and let + 'mkdir -p' check & create it. (Michael Bieniosek via acmurthy) + + HADOOP-1642. Ensure jobids generated by LocalJobRunner are unique to + avoid collissions and hence job-failures. (Doug Cutting via acmurthy) + + HADOOP-2096. Close open file-descriptors held by streams while localizing + job.xml in the JobTracker and while displaying it on the webui in + jobconf.jsp. (Amar Kamat via acmurthy) + + HADOOP-2098. Log start & completion of empty jobs to JobHistory, which + also ensures that we close the file-descriptor of the job's history log + opened during job-submission. (Amar Kamat via acmurthy) + + HADOOP-2112. Adding back changes to build.xml lost while reverting + HADOOP-1622 i.e. http://svn.apache.org/viewvc?view=rev&revision=588771. + (acmurthy) + + HADOOP-2089. Fixes the command line argument handling to handle multiple + -cacheArchive in Hadoop streaming. (Lohit Vijayarenu via ddas) + + HADOOP-2071. Fix StreamXmlRecordReader to use a BufferedInputStream + wrapped over the DFSInputStream since mark/reset aren't supported by + DFSInputStream anymore. (Lohit Vijayarenu via acmurthy) + + HADOOP-1348. Allow XML comments inside configuration files. + (Rajagopal Natarajan and Enis Soztutar via enis) + + HADOOP-1952. Improve handling of invalid, user-specified classes while + configuring streaming jobs such as combiner, input/output formats etc. + Now invalid options are caught, logged and jobs are failed early. (Lohit + Vijayarenu via acmurthy) + + HADOOP-2151. FileSystem.globPaths validates the list of Paths that + it returns. (Lohit Vijayarenu via dhruba) + + HADOOP-2121. Cleanup DFSOutputStream when the stream encountered errors + when Datanodes became full. (Raghu Angadi via dhruba) + + HADOOP-1130. The FileSystem.closeAll() method closes all existing + DFSClients. (Chris Douglas via dhruba) + + HADOOP-2204. DFSTestUtil.waitReplication was not waiting for all replicas + to get created, thus causing unit test failure. + (Raghu Angadi via dhruba) + + HADOOP-2078. An zero size file may have no blocks associated with it. + (Konstantin Shvachko via dhruba) + + HADOOP-2212. ChecksumFileSystem.getSumBufferSize might throw + java.lang.ArithmeticException. The fix is to initialize bytesPerChecksum + to 0. (Michael Bieniosek via ddas) + + HADOOP-2216. Fix jobtasks.jsp to ensure that it first collects the + taskids which satisfy the filtering criteria and then use that list to + print out only the required task-reports, previously it was oblivious to + the filtering and hence used the wrong index into the array of task-reports. + (Amar Kamat via acmurthy) + + HADOOP-2272. Fix findbugs target to reflect changes made to the location + of the streaming jar file by HADOOP-2207. (Adrian Woodhead via nigel) + + HADOOP-2244. Fixes the MapWritable.readFields to clear the instance + field variable every time readFields is called. (Michael Stack via ddas). + + HADOOP-2245. Fixes LocalJobRunner to include a jobId in the mapId. Also, + adds a testcase for JobControl. (Adrian Woodhead via ddas). + + HADOOP-2275. Fix erroneous detection of corrupted file when namenode + fails to allocate any datanodes for newly allocated block. + (Dhruba Borthakur via dhruba) + + HADOOP-2256. Fix a buf in the namenode that could cause it to encounter + an infinite loop while deleting excess replicas that were created by + block rebalancing. (Hairong Kuang via dhruba) + + HADOOP-2209. SecondaryNamenode process exits if it encounters exceptions + that it cannot handle. (Dhruba Borthakur via dhruba) + + HADOOP-2314. Prevent TestBlockReplacement from occasionally getting + into an infinite loop. (Hairong Kuang via dhruba) + + HADOOP-2300. This fixes a bug where mapred.tasktracker.tasks.maximum + would be ignored even if it was set in hadoop-site.xml. + (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2349. Improve code layout in file system transaction logging code. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2368. Fix unit tests on Windows. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2363. This fix allows running multiple instances of the unit test + in parallel. The bug was introduced in HADOOP-2185 that changed + port-rolling behaviour. (Konstantin Shvachko via dhruba) + + HADOOP-2271. Fix chmod task to be non-parallel. (Adrian Woodhead via + omalley) + + HADOOP-2313. Fail the build if building libhdfs fails. (nigel via omalley) + + HADOOP-2359. Remove warning for interruptted exception when closing down + minidfs. (dhruba via omalley) + + HADOOP-1841. Prevent slow clients from consuming threads in the NameNode. + (dhruba) + + HADOOP-2323. JobTracker.close() should not print stack traces for + normal exit. (jimk via cutting) + + HADOOP-2376. Prevents sort example from overriding the number of maps. + (Owen O'Malley via ddas) + + HADOOP-2434. FSDatasetInterface read interface causes HDFS reads to occur + in 1 byte chunks, causing performance degradation. + (Raghu Angadi via dhruba) + + HADOOP-2459. Fix package target so that src/docs/build files are not + included in the release. (nigel) + + HADOOP-2215. Fix documentation in cluster_setup.html & + mapred_tutorial.html reflect that mapred.tasktracker.tasks.maximum has + been superceeded by mapred.tasktracker.{map|reduce}.tasks.maximum. + (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-2459. Fix package target so that src/docs/build files are not + included in the release. (nigel) + + HADOOP-2352. Remove AC_CHECK_LIB for libz and liblzo to ensure that + libhadoop.so doesn't have a dependency on them. (acmurthy) + + HADOOP-2453. Fix the configuration for wordcount-simple example in Hadoop + Pipes which currently produces an XML parsing error. (Amareshwari Sri + Ramadasu via acmurthy) + + HADOOP-2476. Unit test failure while reading permission bits of local + file system (on Windows) fixed. (Raghu Angadi via dhruba) + + HADOOP-2247. Fine-tune the strategies for killing mappers and reducers + due to failures while fetching map-outputs. Now the map-completion times + and number of currently running reduces are taken into account by the + JobTracker before killing the mappers, while the progress made by the + reducer and the number of fetch-failures vis-a-vis total number of + fetch-attempts are taken into account before teh reducer kills itself. + (Amar Kamat via acmurthy) + + HADOOP-2452. Fix eclipse plug-in build.xml to refers to the right + location where hadoop-*-core.jar is generated. (taton) + + HADOOP-2492. Additional debugging in the rpc server to better + diagnose ConcurrentModificationException. (dhruba) + + HADOOP-2344. Enhance the utility for executing shell commands to read the + stdout/stderr streams while waiting for the command to finish (to free up + the buffers). Also, this patch throws away stderr of the DF utility. + @deprecated + org.apache.hadoop.fs.ShellCommand for org.apache.hadoop.util.Shell + org.apache.hadoop.util.ShellUtil for + org.apache.hadoop.util.Shell.ShellCommandExecutor + (Amar Kamat via acmurthy) + + HADOOP-2511. Fix a javadoc warning in org.apache.hadoop.util.Shell + introduced by HADOOP-2344. (acmurthy) + + HADOOP-2442. Fix TestLocalFileSystemPermission.testLocalFSsetOwner + to work on more platforms. (Raghu Angadi via nigel) + + HADOOP-2488. Fix a regression in random read performance. + (Michael Stack via rangadi) + + HADOOP-2523. Fix TestDFSShell.testFilePermissions on Windows. + (Raghu Angadi via nigel) + + HADOOP-2535. Removed support for deprecated mapred.child.heap.size and + fixed some indentation issues in TaskRunner. (acmurthy) + Configuration changes to hadoop-default.xml: + remove mapred.child.heap.size + + HADOOP-2512. Fix error stream handling in Shell. Use exit code to + detect shell command errors in RawLocalFileSystem. (Raghu Angadi) + + HADOOP-2446. Fixes TestHDFSServerPorts and TestMRServerPorts so they + do not rely on statically configured ports and cleanup better. (nigel) + + HADOOP-2537. Make build process compatible with Ant 1.7.0. + (Hrishikesh via nigel) + + HADOOP-1281. Ensure running tasks of completed map TIPs (e.g. speculative + tasks) are killed as soon as the TIP completed. (acmurthy) + + HADOOP-2571. Suppress a suprious warning in test code. (cdouglas) + + HADOOP-2481. NNBench report its progress periodically. + (Hairong Kuang via dhruba) + + HADOOP-2601. Start name-node on a free port for TestNNThroughputBenchmark. + (Konstantin Shvachko) + + HADOOP-2494. Set +x on contrib/*/bin/* in packaged tar bundle. + (stack via tomwhite) + + HADOOP-2605. Remove bogus leading slash in task-tracker report bindAddress. + (Konstantin Shvachko) + + HADOOP-2620. Trivial. 'bin/hadoop fs -help' did not list chmod, chown, and + chgrp. (Raghu Angadi) + + HADOOP-2614. The DFS WebUI accesses are configured to be from the user + specified by dfs.web.ugi. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2543. Implement a "no-permission-checking" mode for smooth + upgrade from a pre-0.16 install of HDFS. + (Hairong Kuang via dhruba) + + HADOOP-290. A DataNode log message now prints the target of a replication + request correctly. (dhruba) + + HADOOP-2538. Redirect to a warning, if plaintext parameter is true but + the filter parameter is not given in TaskLogServlet. + (Michael Bieniosek via enis) + + HADOOP-2582. Prevent 'bin/hadoop fs -copyToLocal' from creating + zero-length files when the src does not exist. + (Lohit Vijayarenu via cdouglas) + + HADOOP-2189. Incrementing user counters should count as progress. (ddas) + + HADOOP-2649. The NameNode periodically computes replication work for + the datanodes. The periodicity of this computation is now configurable. + (dhruba) + + HADOOP-2549. Correct disk size computation so that data-nodes could switch + to other local drives if current is full. (Hairong Kuang via shv) + + HADOOP-2633. Fsck should call name-node methods directly rather than + through rpc. (Tsz Wo (Nicholas), SZE via shv) + + HADOOP-2687. Modify a few log message generated by dfs client to be + logged only at INFO level. (stack via dhruba) + + HADOOP-2402. Fix BlockCompressorStream to ensure it buffers data before + sending it down to the compressor so that each write call doesn't + compress. (Chris Douglas via acmurthy) + + HADOOP-2645. The Metrics initialization code does not throw + exceptions when servers are restarted by MiniDFSCluster. + (Sanjay Radia via dhruba) + + HADOOP-2691. Fix a race condition that was causing the DFSClient + to erroneously remove a good datanode from a pipeline that actually + had another datanode that was bad. (dhruba) + + HADOOP-1195. All code in FSNamesystem checks the return value + of getDataNode for null before using it. (dhruba) + + HADOOP-2640. Fix a bug in MultiFileSplitInputFormat that was always + returning 1 split in some circumstances. (Enis Soztutar via nigel) + + HADOOP-2626. Fix paths with special characters to work correctly + with the local filesystem. (Thomas Friol via cutting) + + HADOOP-2646. Fix SortValidator to work with fully-qualified + working directories. (Arun C Murthy via nigel) + + HADOOP-2092. Added a ping mechanism to the pipes' task to periodically + check if the parent Java task is running, and exit if the parent isn't + alive and responding. (Amareshwari Sri Ramadasu via acmurthy) + + HADOOP-2714. TestDecommission failed on windows because the replication + request was timing out. (dhruba) + + HADOOP-2576. Namenode performance degradation over time triggered by + large heartbeat interval. (Raghu Angadi) + + HADOOP-2713. TestDatanodeDeath failed on windows because the replication + request was timing out. (dhruba) + + HADOOP-2639. Fixes a problem to do with incorrect maintenance of values + for runningMapTasks/runningReduceTasks. (Amar Kamat and Arun Murthy + via ddas) + + HADOOP-2723. Fixed the check for checking whether to do user task + profiling. (Amareshwari Sri Ramadasu via omalley) + + HADOOP-2734. Link forrest docs to new http://hadoop.apache.org + (Doug Cutting via nigel) + + HADOOP-2641. Added Apache license headers to 95 files. (nigel) + + HADOOP-2732. Fix bug in path globbing. (Hairong Kuang via nigel) + + HADOOP-2404. Fix backwards compatability with hadoop-0.15 configuration + files that was broken by HADOOP-2185. (omalley) + + HADOOP-2755. Fix fsck performance degradation because of permissions + issue. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-2768. Fix performance regression caused by HADOOP-1707. + (dhruba borthakur via nigel) + + HADOOP-3108. Fix NPE in setPermission and setOwner. (shv) + +Release 0.15.3 - 2008-01-18 + + BUG FIXES + + HADOOP-2562. globPaths supports {ab,cd}. (Hairong Kuang via dhruba) + + HADOOP-2540. fsck reports missing blocks incorrectly. (dhruba) + + HADOOP-2570. "work" directory created unconditionally, and symlinks + created from the task cwds. + + HADOOP-2574. Fixed mapred_tutorial.xml to correct minor errors with the + WordCount examples. (acmurthy) + +Release 0.15.2 - 2008-01-02 + + BUG FIXES + + HADOOP-2246. Moved the changelog for HADOOP-1851 from the NEW FEATURES + section to the INCOMPATIBLE CHANGES section. (acmurthy) + + HADOOP-2238. Fix TaskGraphServlet so that it sets the content type of + the response appropriately. (Paul Saab via enis) + + HADOOP-2129. Fix so that distcp works correctly when source is + HDFS but not the default filesystem. HDFS paths returned by the + listStatus() method are now fully-qualified. (cutting) + + HADOOP-2378. Fixes a problem where the last task completion event would + get created after the job completes. (Alejandro Abdelnur via ddas) + + HADOOP-2228. Checks whether a job with a certain jobId is already running + and then tries to create the JobInProgress object. + (Johan Oskarsson via ddas) + + HADOOP-2422. dfs -cat multiple files fail with 'Unable to write to + output stream'. (Raghu Angadi via dhruba) + + HADOOP-2460. When the namenode encounters ioerrors on writing a + transaction log, it stops writing new transactions to that one. + (Raghu Angadi via dhruba) + + HADOOP-2227. Use the LocalDirAllocator uniformly for handling all of the + temporary storage required for a given task. It also implies that + mapred.local.dir.minspacestart is handled by checking if there is enough + free-space on any one of the available disks. (Amareshwari Sri Ramadasu + via acmurthy) + + HADOOP-2437. Fix the LocalDirAllocator to choose the seed for the + round-robin disk selections randomly. This helps in spreading data across + multiple partitions much better. (acmurhty) + + HADOOP-2486. When the list of files from the InMemoryFileSystem is obtained + for merging, this patch will ensure that only those files whose checksums + have also got created (renamed) are returned. (ddas) + + HADOOP-2456. Hardcode English locale to prevent NumberFormatException + from occurring when starting the NameNode with certain locales. + (Matthias Friedrich via nigel) + + IMPROVEMENTS + + HADOOP-2160. Remove project-level, non-user documentation from + releases, since it's now maintained in a separate tree. (cutting) + + HADOOP-1327. Add user documentation for streaming. (cutting) + + HADOOP-2382. Add hadoop-default.html to subversion. (cutting) + + HADOOP-2158. hdfsListDirectory calls FileSystem.listStatus instead + of FileSystem.listPaths. This reduces the number of RPC calls on the + namenode, thereby improving scalability. (Christian Kunz via dhruba) + +Release 0.15.1 - 2007-11-27 + + INCOMPATIBLE CHANGES + + HADOOP-713. Reduce CPU usage on namenode while listing directories. + FileSystem.listPaths does not return the size of the entire subtree. + Introduced a new API ClientProtocol.getContentLength that returns the + size of the subtree. (Dhruba Borthakur via dhruba) + + IMPROVEMENTS + + HADOOP-1917. Addition of guides/tutorial for better overall + documentation for Hadoop. Specifically: + * quickstart.html is targetted towards first-time users and helps them + setup a single-node cluster and play with Hadoop. + * cluster_setup.html helps admins to configure and setup non-trivial + hadoop clusters. + * mapred_tutorial.html is a comprehensive Map-Reduce tutorial. + (acmurthy) + + BUG FIXES + + HADOOP-2174. Removed the unnecessary Reporter.setStatus call from + FSCopyFilesMapper.close which led to a NPE since the reporter isn't valid + in the close method. (Chris Douglas via acmurthy) + + HADOOP-2172. Restore performance of random access to local files + by caching positions of local input streams, avoiding a system + call. (cutting) + + HADOOP-2205. Regenerate the Hadoop website since some of the changes made + by HADOOP-1917 weren't correctly copied over to the trunk/docs directory. + Also fixed a couple of minor typos and broken links. (acmurthy) + +Release 0.15.0 - 2007-11-2 + + INCOMPATIBLE CHANGES + + HADOOP-1708. Make files appear in namespace as soon as they are + created. (Dhruba Borthakur via dhruba) + + HADOOP-999. A HDFS Client immediately informs the NameNode of a new + file creation. ClientProtocol version changed from 14 to 15. + (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-932. File locking interfaces and implementations (that were + earlier deprecated) are removed. Client Protocol version changed + from 15 to 16. (Raghu Angadi via dhruba) + + HADOOP-1621. FileStatus is now a concrete class and FileSystem.listPaths + is deprecated and replaced with listStatus. (Chris Douglas via omalley) + + HADOOP-1656. The blockSize of a file is stored persistently in the file + inode. (Dhruba Borthakur via dhruba) + + HADOOP-1838. The blocksize of files created with an earlier release is + set to the default block size. (Dhruba Borthakur via dhruba) + + HADOOP-785. Add support for 'final' Configuration parameters, + removing support for 'mapred-default.xml', and changing + 'hadoop-site.xml' to not override other files. Now folks should + generally use 'hadoop-site.xml' for all configurations. Values + with a 'final' tag may not be overridden by subsequently loaded + configuration files, e.g., by jobs. (Arun C. Murthy via cutting) + + HADOOP-1846. DatanodeReport in ClientProtocol can report live + datanodes, dead datanodes or all datanodes. Client Protocol version + changed from 17 to 18. (Hairong Kuang via dhruba) + + HADOOP-1851. Permit specification of map output compression type + and codec, independent of the final output's compression + parameters. (Arun C Murthy via cutting) + + HADOOP-1819. Jobtracker cleanups, including binding ports before + clearing state directories, so that inadvertently starting a + second jobtracker doesn't trash one that's already running. Removed + method JobTracker.getTracker() because the static variable, which + stored the value caused initialization problems. + (omalley via cutting) + + NEW FEATURES + + HADOOP-89. A client can access file data even before the creator + has closed the file. Introduce a new command "tail" from dfs shell. + (Dhruba Borthakur via dhruba) + + HADOOP-1636. Allow configuration of the number of jobs kept in + memory by the JobTracker. (Michael Bieniosek via omalley) + + HADOOP-1667. Reorganize CHANGES.txt into sections to make it + easier to read. Also remove numbering, to make merging easier. + (cutting) + + HADOOP-1610. Add metrics for failed tasks. + (Devaraj Das via tomwhite) + + HADOOP-1767. Add "bin/hadoop job -list" sub-command. (taton via cutting) + + HADOOP-1351. Add "bin/hadoop job [-fail-task|-kill-task]" sub-commands + to terminate a particular task-attempt. (Enis Soztutar via acmurthy) + + HADOOP-1880. SleepJob : An example job that sleeps at each map and + reduce task. (enis) + + HADOOP-1809. Add a link in web site to #hadoop IRC channel. (enis) + + HADOOP-1894. Add percentage graphs and mapred task completion graphs + to Web User Interface. Users not using Firefox may install a plugin to + their browsers to see svg graphics. (enis) + + HADOOP-1914. Introduce a new NamenodeProtocol to allow secondary + namenodes and rebalancing processes to communicate with a primary + namenode. (Hairong Kuang via dhruba) + + HADOOP-1963. Add a FileSystem implementation for the Kosmos + Filesystem (KFS). (Sriram Rao via cutting) + + HADOOP-1822. Allow the specialization and configuration of socket + factories. Provide a StandardSocketFactory, and a SocksSocketFactory to + allow the use of SOCKS proxies. (taton). + + HADOOP-1968. FileSystem supports wildcard input syntax "{ }". + (Hairong Kuang via dhruba) + + HADOOP-2566. Add globStatus method to the FileSystem interface + and deprecate globPath and listPath. (Hairong Kuang via hairong) + + OPTIMIZATIONS + + HADOOP-1910. Reduce the number of RPCs that DistributedFileSystem.create() + makes to the namenode. (Raghu Angadi via dhruba) + + HADOOP-1565. Reduce memory usage of NameNode by replacing + TreeMap in HDFS Namespace with ArrayList. + (Dhruba Borthakur via dhruba) + + HADOOP-1743. Change DFS INode from a nested class to standalone + class, with specialized subclasses for directories and files, to + save memory on the namenode. (Konstantin Shvachko via cutting) + + HADOOP-1759. Change file name in INode from String to byte[], + saving memory on the namenode. (Konstantin Shvachko via cutting) + + HADOOP-1766. Save memory in namenode by having BlockInfo extend + Block, and replace many uses of Block with BlockInfo. + (Konstantin Shvachko via cutting) + + HADOOP-1687. Save memory in namenode by optimizing BlockMap + representation. (Konstantin Shvachko via cutting) + + HADOOP-1774. Remove use of INode.parent in Block CRC upgrade. + (Raghu Angadi via dhruba) + + HADOOP-1788. Increase the buffer size on the Pipes command socket. + (Amareshwari Sri Ramadasu and Christian Kunz via omalley) + + BUG FIXES + + HADOOP-1946. The Datanode code does not need to invoke du on + every heartbeat. (Hairong Kuang via dhruba) + + HADOOP-1935. Fix a NullPointerException in internalReleaseCreate. + (Dhruba Borthakur) + + HADOOP-1933. The nodes listed in include and exclude files + are always listed in the datanode report. + (Raghu Angadi via dhruba) + + HADOOP-1953. The job tracker should wait beteween calls to try and delete + the system directory (Owen O'Malley via devaraj) + + HADOOP-1932. TestFileCreation fails with message saying filestatus.dat + is of incorrect size. (Dhruba Borthakur via dhruba) + + HADOOP-1573. Support for 0 reducers in PIPES. + (Owen O'Malley via devaraj) + + HADOOP-1500. Fix typographical errors in the DFS WebUI. + (Nigel Daley via dhruba) + + HADOOP-1076. Periodic checkpoint can continue even if an earlier + checkpoint encountered an error. (Dhruba Borthakur via dhruba) + + HADOOP-1887. The Namenode encounters an ArrayIndexOutOfBoundsException + while listing a directory that had a file that was + being actively written to. (Dhruba Borthakur via dhruba) + + HADOOP-1904. The Namenode encounters an exception because the + list of blocks per datanode-descriptor was corrupted. + (Konstantin Shvachko via dhruba) + + HADOOP-1762. The Namenode fsimage does not contain a list of + Datanodes. (Raghu Angadi via dhruba) + + HADOOP-1890. Removed debugging prints introduced by HADOOP-1774. + (Raghu Angadi via dhruba) + + HADOOP-1763. Too many lost task trackers on large clusters due to + insufficient number of RPC handler threads on the JobTracker. + (Devaraj Das) + + HADOOP-1463. HDFS report correct usage statistics for disk space + used by HDFS. (Hairong Kuang via dhruba) + + HADOOP-1692. In DFS ant task, don't cache the Configuration. + (Chris Douglas via cutting) + + HADOOP-1726. Remove lib/jetty-ext/ant.jar. (omalley) + + HADOOP-1772. Fix hadoop-daemon.sh script to get correct hostname + under Cygwin. (Tsz Wo (Nicholas), SZE via cutting) + + HADOOP-1749. Change TestDFSUpgrade to sort files, fixing sporadic + test failures. (Enis Soztutar via cutting) + + HADOOP-1748. Fix tasktracker to be able to launch tasks when log + directory is relative. (omalley via cutting) + + HADOOP-1775. Fix a NullPointerException and an + IllegalArgumentException in MapWritable. + (Jim Kellerman via cutting) + + HADOOP-1795. Fix so that jobs can generate output file names with + special characters. (Fr??d??ric Bertin via cutting) + + HADOOP-1810. Fix incorrect value type in MRBench (SmallJobs) + (Devaraj Das via tomwhite) + + HADOOP-1806. Fix ant task to compile again, also fix default + builds to compile ant tasks. (Chris Douglas via cutting) + + HADOOP-1758. Fix escape processing in librecordio to not be + quadratic. (Vivek Ratan via cutting) + + HADOOP-1817. Fix MultiFileSplit to read and write the split + length, so that it is not always zero in map tasks. + (Thomas Friol via cutting) + + HADOOP-1853. Fix contrib/streaming to accept multiple -cacheFile + options. (Prachi Gupta via cutting) + + HADOOP-1818. Fix MultiFileInputFormat so that it does not return + empty splits when numPaths < numSplits. (Thomas Friol via enis) + + HADOOP-1840. Fix race condition which leads to task's diagnostic + messages getting lost. (acmurthy) + + HADOOP-1885. Fix race condition in MiniDFSCluster shutdown. + (Chris Douglas via nigel) + + HADOOP-1889. Fix path in EC2 scripts for building your own AMI. + (tomwhite) + + HADOOP-1892. Fix a NullPointerException in the JobTracker when + trying to fetch a task's diagnostic messages from the JobClient. + (Amar Kamat via acmurthy) + + HADOOP-1897. Completely remove about.html page from the web site. + (enis) + + HADOOP-1907. Fix null pointer exception when getting task diagnostics + in JobClient. (Christian Kunz via omalley) + + HADOOP-1882. Remove spurious asterisks from decimal number displays. + (Raghu Angadi via cutting) + + HADOOP-1783. Make S3 FileSystem return Paths fully-qualified with + scheme and host. (tomwhite) + + HADOOP-1925. Make pipes' autoconf script look for libsocket and libnsl, so + that it can compile under Solaris. (omalley) + + HADOOP-1940. TestDFSUpgradeFromImage must shut down its MiniDFSCluster. + (Chris Douglas via nigel) + + HADOOP-1930. Fix the blame for failed fetchs on the right host. (Arun C. + Murthy via omalley) + + HADOOP-1934. Fix the platform name on Mac to use underscores rather than + spaces. (omalley) + + HADOOP-1959. Use "/" instead of File.separator in the StatusHttpServer. + (jimk via omalley) + + HADOOP-1626. Improve dfsadmin help messages. + (Lohit Vijayarenu via dhruba) + + HADOOP-1695. The SecondaryNamenode waits for the Primary NameNode to + start up. (Dhruba Borthakur) + + HADOOP-1983. Have Pipes flush the command socket when progress is sent + to prevent timeouts during long computations. (omalley) + + HADOOP-1875. Non-existant directories or read-only directories are + filtered from dfs.client.buffer.dir. (Hairong Kuang via dhruba) + + HADOOP-1992. Fix the performance degradation in the sort validator. + (acmurthy via omalley) + + HADOOP-1874. Move task-outputs' promotion/discard to a separate thread + distinct from the main heartbeat-processing thread. The main upside being + that we do not lock-up the JobTracker during HDFS operations, which + otherwise may lead to lost tasktrackers if the NameNode is unresponsive. + (Devaraj Das via acmurthy) + + HADOOP-2026. Namenode prints out one log line for "Number of transactions" + at most once every minute. (Dhruba Borthakur) + + HADOOP-2022. Ensure that status information for successful tasks is correctly + recorded at the JobTracker, so that, for example, one may view correct + information via taskdetails.jsp. This bug was introduced by HADOOP-1874. + (Amar Kamat via acmurthy) + + HADOOP-2031. Correctly maintain the taskid which takes the TIP to + completion, failing which the case of lost tasktrackers isn't handled + properly i.e. the map TIP is incorrectly left marked as 'complete' and it + is never rescheduled elsewhere, leading to hung reduces. + (Devaraj Das via acmurthy) + + HADOOP-2018. The source datanode of a data transfer waits for + a response from the target datanode before closing the data stream. + (Hairong Kuang via dhruba) + + HADOOP-2023. Disable TestLocalDirAllocator on Windows. + (Hairong Kuang via nigel) + + HADOOP-2016. Ignore status-updates from FAILED/KILLED tasks at the + TaskTracker. This fixes a race-condition which caused the tasks to wrongly + remain in the RUNNING state even after being killed by the JobTracker and + thus handicap the cleanup of the task's output sub-directory. (acmurthy) + + HADOOP-1771. Fix a NullPointerException in streaming caused by an + IOException in MROutputThread. (lohit vijayarenu via nigel) + + HADOOP-2028. Fix distcp so that the log dir does not need to be + specified and the destination does not need to exist. + (Chris Douglas via nigel) + + HADOOP-2044. The namenode protects all lease manipulations using a + sortedLease lock. (Dhruba Borthakur) + + HADOOP-2051. The TaskCommit thread should not die for exceptions other + than the InterruptedException. This behavior is there for the other long + running threads in the JobTracker. (Arun C Murthy via ddas) + + HADOOP-1973. The FileSystem object would be accessed on the JobTracker + through a RPC in the InterTrackerProtocol. The check for the object being + null was missing and hence NPE would be thrown sometimes. This issue fixes + that problem. (Amareshwari Sri Ramadasu via ddas) + + HADOOP-2033. The SequenceFile.Writer.sync method was a no-op, which caused + very uneven splits for applications like distcp that count on them. + (omalley) + + HADOOP-2070. Added a flush method to pipes' DownwardProtocol and call + that before waiting for the application to finish to ensure all buffered + data is flushed. (Owen O'Malley via acmurthy) + + HADOOP-2080. Fixed calculation of the checksum file size when the values + are large. (omalley) + + HADOOP-2048. Change error handling in distcp so that each map copies + as much as possible before reporting the error. Also report progress on + every copy. (Chris Douglas via omalley) + + HADOOP-2073. Change size of VERSION file after writing contents to it. + (Konstantin Shvachko via dhruba) + + HADOOP-2102. Fix the deprecated ToolBase to pass its Configuration object + to the superceding ToolRunner to ensure it picks up the appropriate + configuration resources. (Dennis Kubes and Enis Soztutar via acmurthy) + + HADOOP-2103. Fix minor javadoc bugs introduce by HADOOP-2046. (Nigel + Daley via acmurthy) + + IMPROVEMENTS + + HADOOP-1908. Restructure data node code so that block sending and + receiving are seperated from data transfer header handling. + (Hairong Kuang via dhruba) + + HADOOP-1921. Save the configuration of completed/failed jobs and make them + available via the web-ui. (Amar Kamat via devaraj) + + HADOOP-1266. Remove dependency of package org.apache.hadoop.net on + org.apache.hadoop.dfs. (Hairong Kuang via dhruba) + + HADOOP-1779. Replace INodeDirectory.getINode() by a getExistingPathINodes() + to allow the retrieval of all existing INodes along a given path in a + single lookup. This facilitates removal of the 'parent' field in the + inode. (Christophe Taton via dhruba) + + HADOOP-1756. Add toString() to some Writable-s. (ab) + + HADOOP-1727. New classes: MapWritable and SortedMapWritable. + (Jim Kellerman via ab) + + HADOOP-1651. Improve progress reporting. + (Devaraj Das via tomwhite) + + HADOOP-1595. dfsshell can wait for a file to achieve its intended + replication target. (Tsz Wo (Nicholas), SZE via dhruba) + + HADOOP-1693. Remove un-needed log fields in DFS replication classes, + since the log may be accessed statically. (Konstantin Shvachko via cutting) + + HADOOP-1231. Add generics to Mapper and Reducer interfaces. + (tomwhite via cutting) + + HADOOP-1436. Improved command-line APIs, so that all tools need + not subclass ToolBase, and generic parameter parser is public. + (Enis Soztutar via cutting) + + HADOOP-1703. DFS-internal code cleanups, removing several uses of + the obsolete UTF8. (Christophe Taton via cutting) + + HADOOP-1731. Add Hadoop's version to contrib jar file names. + (cutting) + + HADOOP-1689. Make shell scripts more portable. All shell scripts + now explicitly depend on bash, but do not require that bash be + installed in a particular location, as long as it is on $PATH. + (cutting) + + HADOOP-1744. Remove many uses of the deprecated UTF8 class from + the HDFS namenode. (Christophe Taton via cutting) + + HADOOP-1654. Add IOUtils class, containing generic io-related + utility methods. (Enis Soztutar via cutting) + + HADOOP-1158. Change JobTracker to record map-output transmission + errors and use them to trigger speculative re-execution of tasks. + (Arun C Murthy via cutting) + + HADOOP-1601. Change GenericWritable to use ReflectionUtils for + instance creation, avoiding classloader issues, and to implement + Configurable. (Enis Soztutar via cutting) + + HADOOP-1750. Log standard output and standard error when forking + task processes. (omalley via cutting) + + HADOOP-1803. Generalize build.xml to make files in all + src/contrib/*/bin directories executable. (stack via cutting) + + HADOOP-1739. Let OS always choose the tasktracker's umbilical + port. Also switch default address for umbilical connections to + loopback. (cutting) + + HADOOP-1812. Let OS choose ports for IPC and RPC unit tests. (cutting) + + HADOOP-1825. Create $HADOOP_PID_DIR when it does not exist. + (Michael Bieniosek via cutting) + + HADOOP-1425. Replace uses of ToolBase with the Tool interface. + (Enis Soztutar via cutting) + + HADOOP-1569. Reimplement DistCP to use the standard FileSystem/URI + code in Hadoop so that you can copy from and to all of the supported file + systems.(Chris Douglas via omalley) + + HADOOP-1018. Improve documentation w.r.t handling of lost hearbeats between + TaskTrackers and JobTracker. (acmurthy) + + HADOOP-1718. Add ant targets for measuring code coverage with clover. + (simonwillnauer via nigel) + + HADOOP-1592. Log error messages to the client console when tasks + fail. (Amar Kamat via cutting) + + HADOOP-1879. Remove some unneeded casts. (Nilay Vaish via cutting) + + HADOOP-1878. Add space between priority links on job details + page. (Thomas Friol via cutting) + + HADOOP-120. In ArrayWritable, prevent creation with null value + class, and improve documentation. (Cameron Pope via cutting) + + HADOOP-1926. Add a random text writer example/benchmark so that we can + benchmark compression codecs on random data. (acmurthy via omalley) + + HADOOP-1906. Warn the user if they have an obsolete madred-default.xml + file in their configuration directory. (acmurthy via omalley) + + HADOOP-1971. Warn when job does not specify a jar. (enis via cutting) + + HADOOP-1942. Increase the concurrency of transaction logging to + edits log. Reduce the number of syncs by double-buffering the changes + to the transaction log. (Dhruba Borthakur) + + HADOOP-2046. Improve mapred javadoc. (Arun C. Murthy via cutting) + + HADOOP-2105. Improve overview.html to clarify supported platforms, + software pre-requisites for hadoop, how to install them on various + platforms and a better general description of hadoop and it's utility. + (Jim Kellerman via acmurthy) + + +Release 0.14.4 - 2007-11-26 + + BUG FIXES + + HADOOP-2140. Add missing Apache Licensing text at the front of several + C and C++ files. + + HADOOP-2169. Fix the DT_SONAME field of libhdfs.so to set it to the + correct value of 'libhdfs.so', currently it is set to the absolute path of + libhdfs.so. (acmurthy) + + HADOOP-2001. Make the job priority updates and job kills synchronized on + the JobTracker. Deadlock was seen in the JobTracker because of the lack of + this synchronization. (Arun C Murthy via ddas) + + +Release 0.14.3 - 2007-10-19 + + BUG FIXES + + HADOOP-2053. Fixed a dangling reference to a memory buffer in the map + output sorter. (acmurthy via omalley) + + HADOOP-2036. Fix a NullPointerException in JvmMetrics class. (nigel) + + HADOOP-2043. Release 0.14.2 was compiled with Java 1.6 rather than + Java 1.5. (cutting) + + +Release 0.14.2 - 2007-10-09 + + BUG FIXES + + HADOOP-1948. Removed spurious error message during block crc upgrade. + (Raghu Angadi via dhruba) + + HADOOP-1862. reduces are getting stuck trying to find map outputs. + (Arun C. Murthy via ddas) + + HADOOP-1977. Fixed handling of ToolBase cli options in JobClient. + (enis via omalley) + + HADOOP-1972. Fix LzoCompressor to ensure the user has actually asked + to finish compression. (arun via omalley) + + HADOOP-1970. Fix deadlock in progress reporting in the task. (Vivek + Ratan via omalley) + + HADOOP-1978. Name-node removes edits.new after a successful startup. + (Konstantin Shvachko via dhruba) + + HADOOP-1955. The Namenode tries to not pick the same source Datanode for + a replication request if the earlier replication request for the same + block and that source Datanode had failed. + (Raghu Angadi via dhruba) + + HADOOP-1961. The -get option to dfs-shell works when a single filename + is specified. (Raghu Angadi via dhruba) + + HADOOP-1997. TestCheckpoint closes the edits file after writing to it, + otherwise the rename of this file on Windows fails. + (Konstantin Shvachko via dhruba) + +Release 0.14.1 - 2007-09-04 + + BUG FIXES + + HADOOP-1740. Fix null pointer exception in sorting map outputs. (Devaraj + Das via omalley) + + HADOOP-1790. Fix tasktracker to work correctly on multi-homed + boxes. (Torsten Curdt via cutting) + + HADOOP-1798. Fix jobtracker to correctly account for failed + tasks. (omalley via cutting) + + +Release 0.14.0 - 2007-08-17 + + INCOMPATIBLE CHANGES + + 1. HADOOP-1134. + CONFIG/API - dfs.block.size must now be a multiple of + io.byte.per.checksum, otherwise new files can not be written. + LAYOUT - DFS layout version changed from -6 to -7, which will require an + upgrade from previous versions. + PROTOCOL - Datanode RPC protocol version changed from 7 to 8. + + 2. HADOOP-1283 + API - deprecated file locking API. + + 3. HADOOP-894 + PROTOCOL - changed ClientProtocol to fetch parts of block locations. + + 4. HADOOP-1336 + CONFIG - Enable speculative execution by default. + + 5. HADOOP-1197 + API - deprecated method for Configuration.getObject, because + Configurations should only contain strings. + + 6. HADOOP-1343 + API - deprecate Configuration.set(String,Object) so that only strings are + put in Configrations. + + 7. HADOOP-1207 + CLI - Fix FsShell 'rm' command to continue when a non-existent file is + encountered. + + 8. HADOOP-1473 + CLI/API - Job, TIP, and Task id formats have changed and are now unique + across job tracker restarts. + + 9. HADOOP-1400 + API - JobClient constructor now takes a JobConf object instead of a + Configuration object. + + NEW FEATURES and BUG FIXES + + 1. HADOOP-1197. In Configuration, deprecate getObject() and add + getRaw(), which skips variable expansion. (omalley via cutting) + + 2. HADOOP-1343. In Configuration, deprecate set(String,Object) and + implement Iterable. (omalley via cutting) + + 3. HADOOP-1344. Add RunningJob#getJobName(). (Michael Bieniosek via cutting) + + 4. HADOOP-1342. In aggregators, permit one to limit the number of + unique values per key. (Runping Qi via cutting) + + 5. HADOOP-1340. Set the replication factor of the MD5 file in the filecache + to be the same as the replication factor of the original file. + (Dhruba Borthakur via tomwhite.) + + 6. HADOOP-1355. Fix null pointer dereference in + TaskLogAppender.append(LoggingEvent). (Arun C Murthy via tomwhite.) + + 7. HADOOP-1357. Fix CopyFiles to correctly avoid removing "/". + (Arun C Murthy via cutting) + + 8. HADOOP-234. Add pipes facility, which permits writing MapReduce + programs in C++. + + 9. HADOOP-1359. Fix a potential NullPointerException in HDFS. + (Hairong Kuang via cutting) + + 10. HADOOP-1364. Fix inconsistent synchronization in SequenceFile. + (omalley via cutting) + + 11. HADOOP-1379. Add findbugs target to build.xml. + (Nigel Daley via cutting) + + 12. HADOOP-1364. Fix various inconsistent synchronization issues. + (Devaraj Das via cutting) + + 13. HADOOP-1393. Remove a potential unexpected negative number from + uses of random number generator. (omalley via cutting) + + 14. HADOOP-1387. A number of "performance" code-cleanups suggested + by findbugs. (Arun C Murthy via cutting) + + 15. HADOOP-1401. Add contrib/hbase javadoc to tree. (stack via cutting) + + 16. HADOOP-894. Change HDFS so that the client only retrieves a limited + number of block locations per request from the namenode. + (Konstantin Shvachko via cutting) + + 17. HADOOP-1406. Plug a leak in MapReduce's use of metrics. + (David Bowen via cutting) + + 18. HADOOP-1394. Implement "performance" code-cleanups in HDFS + suggested by findbugs. (Raghu Angadi via cutting) + + 19. HADOOP-1413. Add example program that uses Knuth's dancing links + algorithm to solve pentomino problems. (omalley via cutting) + + 20. HADOOP-1226. Change HDFS so that paths it returns are always + fully qualified. (Dhruba Borthakur via cutting) + + 21. HADOOP-800. Improvements to HDFS web-based file browser. + (Enis Soztutar via cutting) + + 22. HADOOP-1408. Fix a compiler warning by adding a class to replace + a generic. (omalley via cutting) + + 23. HADOOP-1376. Modify RandomWriter example so that it can generate + data for the Terasort benchmark. (Devaraj Das via cutting) + + 24. HADOOP-1429. Stop logging exceptions during normal IPC server + shutdown. (stack via cutting) + + 25. HADOOP-1461. Fix the synchronization of the task tracker to + avoid lockups in job cleanup. (Arun C Murthy via omalley) + + 26. HADOOP-1446. Update the TaskTracker metrics while the task is + running. (Devaraj via omalley) + + 27. HADOOP-1414. Fix a number of issues identified by FindBugs as + "Bad Practice". (Dhruba Borthakur via cutting) + + 28. HADOOP-1392. Fix "correctness" bugs identified by FindBugs in + fs and dfs packages. (Raghu Angadi via cutting) + + 29. HADOOP-1412. Fix "dodgy" bugs identified by FindBugs in fs and + io packages. (Hairong Kuang via cutting) + + 30. HADOOP-1261. Remove redundant events from HDFS namenode's edit + log when a datanode restarts. (Raghu Angadi via cutting) + + 31. HADOOP-1336. Re-enable speculative execution by + default. (omalley via cutting) + + 32. HADOOP-1311. Fix a bug in BytesWritable#set() where start offset + was ignored. (Dhruba Borthakur via cutting) + + 33. HADOOP-1450. Move checksumming closer to user code, so that + checksums are created before data is stored in large buffers and + verified after data is read from large buffers, to better catch + memory errors. (cutting) + + 34. HADOOP-1447. Add support in contrib/data_join for text inputs. + (Senthil Subramanian via cutting) + + 35. HADOOP-1456. Fix TestDecommission assertion failure by setting + the namenode to ignore the load on datanodes while allocating + replicas. (Dhruba Borthakur via tomwhite) + + 36. HADOOP-1396. Fix FileNotFoundException on DFS block. + (Dhruba Borthakur via tomwhite) + + 37. HADOOP-1467. Remove redundant counters from WordCount example. + (Owen O'Malley via tomwhite) + + 38. HADOOP-1139. Log HDFS block transitions at INFO level, to better + enable diagnosis of problems. (Dhruba Borthakur via cutting) + + 39. HADOOP-1269. Finer grained locking in HDFS namenode. + (Dhruba Borthakur via cutting) + + 40. HADOOP-1438. Improve HDFS documentation, correcting typos and + making images appear in PDF. Also update copyright date for all + docs. (Luke Nezda via cutting) + + 41. HADOOP-1457. Add counters for monitoring task assignments. + (Arun C Murthy via tomwhite) + + 42. HADOOP-1472. Fix so that timed-out tasks are counted as failures + rather than as killed. (Arun C Murthy via cutting) + + 43. HADOOP-1234. Fix a race condition in file cache that caused + tasktracker to not be able to find cached files. + (Arun C Murthy via cutting) + + 44. HADOOP-1482. Fix secondary namenode to roll info port. + (Dhruba Borthakur via cutting) + + 45. HADOOP-1300. Improve removal of excess block replicas to be + rack-aware. Attempts are now made to keep replicas on more + racks. (Hairong Kuang via cutting) + + 46. HADOOP-1417. Disable a few FindBugs checks that generate a lot + of spurious warnings. (Nigel Daley via cutting) + + 47. HADOOP-1320. Rewrite RandomWriter example to bypass reduce. + (Arun C Murthy via cutting) + + 48. HADOOP-1449. Add some examples to contrib/data_join. + (Senthil Subramanian via cutting) + + 49. HADOOP-1459. Fix so that, in HDFS, getFileCacheHints() returns + hostnames instead of IP addresses. (Dhruba Borthakur via cutting) + + 50. HADOOP-1493. Permit specification of "java.library.path" system + property in "mapred.child.java.opts" configuration property. + (Enis Soztutar via cutting) + + 51. HADOOP-1372. Use LocalDirAllocator for HDFS temporary block + files, so that disk space, writability, etc. is considered. + (Dhruba Borthakur via cutting) + + 52. HADOOP-1193. Pool allocation of compression codecs. This + eliminates a memory leak that could cause OutOfMemoryException, + and also substantially improves performance. + (Arun C Murthy via cutting) + + 53. HADOOP-1492. Fix a NullPointerException handling version + mismatch during datanode registration. + (Konstantin Shvachko via cutting) + + 54. HADOOP-1442. Fix handling of zero-length input splits. + (Senthil Subramanian via cutting) + + 55. HADOOP-1444. Fix HDFS block id generation to check pending + blocks for duplicates. (Dhruba Borthakur via cutting) + + 56. HADOOP-1207. Fix FsShell's 'rm' command to not stop when one of + the named files does not exist. (Tsz Wo Sze via cutting) + + 57. HADOOP-1475. Clear tasktracker's file cache before it + re-initializes, to avoid confusion. (omalley via cutting) + + 58. HADOOP-1505. Remove spurious stacktrace in ZlibFactory + introduced in HADOOP-1093. (Michael Stack via tomwhite) + + 59. HADOOP-1484. Permit one to kill jobs from the web ui. Note that + this is disabled by default. One must set + "webinterface.private.actions" to enable this. + (Enis Soztutar via cutting) + + 60. HADOOP-1003. Remove flushing of namenode edit log from primary + namenode lock, increasing namenode throughput. + (Dhruba Borthakur via cutting) + + 61. HADOOP-1023. Add links to searchable mail archives. + (tomwhite via cutting) + + 62. HADOOP-1504. Fix terminate-hadoop-cluster script in contrib/ec2 + to only terminate Hadoop instances, and not other instances + started by the same user. (tomwhite via cutting) + + 63. HADOOP-1462. Improve task progress reporting. Progress reports + are no longer blocking since i/o is performed in a separate + thread. Reporting during sorting and more is also more + consistent. (Vivek Ratan via cutting) + + 64. [ intentionally blank ] + + 65. HADOOP-1453. Remove some unneeded calls to FileSystem#exists() + when opening files, reducing the namenode load somewhat. + (Raghu Angadi via cutting) + + 66. HADOOP-1489. Fix text input truncation bug due to mark/reset. + Add a unittest. (Bwolen Yang via cutting) + + 67. HADOOP-1455. Permit specification of arbitrary job options on + pipes command line. (Devaraj Das via cutting) + + 68. HADOOP-1501. Better randomize sending of block reports to + namenode, so reduce load spikes. (Dhruba Borthakur via cutting) + + 69. HADOOP-1147. Remove @author tags from Java source files. + + 70. HADOOP-1283. Convert most uses of UTF8 in the namenode to be + String. (Konstantin Shvachko via cutting) + + 71. HADOOP-1511. Speedup hbase unit tests. (stack via cutting) + + 72. HADOOP-1517. Remove some synchronization in namenode to permit + finer grained locking previously added. (Konstantin Shvachko via cutting) + + 73. HADOOP-1512. Fix failing TestTextInputFormat on Windows. + (Senthil Subramanian via nigel) + + 74. HADOOP-1518. Add a session id to job metrics, for use by HOD. + (David Bowen via cutting) + + 75. HADOOP-1292. Change 'bin/hadoop fs -get' to first copy files to + a temporary name, then rename them to their final name, so that + failures don't leave partial files. (Tsz Wo Sze via cutting) + + 76. HADOOP-1377. Add support for modification time to FileSystem and + implement in HDFS and local implementations. Also, alter access + to file properties to be through a new FileStatus interface. + (Dhruba Borthakur via cutting) + + 77. HADOOP-1515. Add MultiFileInputFormat, which can pack multiple, + typically small, input files into each split. (Enis Soztutar via cutting) + + 78. HADOOP-1514. Make reducers report progress while waiting for map + outputs, so they're not killed. (Vivek Ratan via cutting) + + 79. HADOOP-1508. Add an Ant task for FsShell operations. Also add + new FsShell commands "touchz", "test" and "stat". + (Chris Douglas via cutting) + + 80. HADOOP-1028. Add log messages for server startup and shutdown. + (Tsz Wo Sze via cutting) + + 81. HADOOP-1485. Add metrics for monitoring shuffle. + (Devaraj Das via cutting) + + 82. HADOOP-1536. Remove file locks from libhdfs tests. + (Dhruba Borthakur via nigel) + + 83. HADOOP-1520. Add appropriate synchronization to FSEditsLog. + (Dhruba Borthakur via nigel) + + 84. HADOOP-1513. Fix a race condition in directory creation. + (Devaraj via omalley) + + 85. HADOOP-1546. Remove spurious column from HDFS web UI. + (Dhruba Borthakur via cutting) + + 86. HADOOP-1556. Make LocalJobRunner delete working files at end of + job run. (Devaraj Das via tomwhite) + + 87. HADOOP-1571. Add contrib lib directories to root build.xml + javadoc classpath. (Michael Stack via tomwhite) + + 88. HADOOP-1554. Log killed tasks to the job history and display them on the + web/ui. (Devaraj Das via omalley) + + 89. HADOOP-1533. Add persistent error logging for distcp. The logs are stored + into a specified hdfs directory. (Senthil Subramanian via omalley) + + 90. HADOOP-1286. Add support to HDFS for distributed upgrades, which + permits coordinated upgrade of datanode data. + (Konstantin Shvachko via cutting) + + 91. HADOOP-1580. Improve contrib/streaming so that subprocess exit + status is displayed for errors. (John Heidemann via cutting) + + 92. HADOOP-1448. In HDFS, randomize lists of non-local block + locations returned to client, so that load is better balanced. + (Hairong Kuang via cutting) + + 93. HADOOP-1578. Fix datanode to send its storage id to namenode + during registration. (Konstantin Shvachko via cutting) + + 94. HADOOP-1584. Fix a bug in GenericWritable which limited it to + 128 types instead of 256. (Espen Amble Kolstad via cutting) + + 95. HADOOP-1473. Make job ids unique across jobtracker restarts. + (omalley via cutting) + + 96. HADOOP-1582. Fix hdfslib to return 0 instead of -1 at + end-of-file, per C conventions. (Christian Kunz via cutting) + + 97. HADOOP-911. Fix a multithreading bug in libhdfs. + (Christian Kunz) + + 98. HADOOP-1486. Fix so that fatal exceptions in namenode cause it + to exit. (Dhruba Borthakur via cutting) + + 99. HADOOP-1470. Factor checksum generation and validation out of + ChecksumFileSystem so that it can be reused by FileSystem's with + built-in checksumming. (Hairong Kuang via cutting) + +100. HADOOP-1590. Use relative urls in jobtracker jsp pages, so that + webapp can be used in non-root contexts. (Thomas Friol via cutting) + +101. HADOOP-1596. Fix the parsing of taskids by streaming and improve the + error reporting. (omalley) + +102. HADOOP-1535. Fix the user-controlled grouping to the reduce function. + (Vivek Ratan via omalley) + +103. HADOOP-1585. Modify GenericWritable to declare the classes as subtypes + of Writable (Espen Amble Kolstad via omalley) + +104. HADOOP-1576. Fix errors in count of completed tasks when + speculative execution is enabled. (Arun C Murthy via cutting) + +105. HADOOP-1598. Fix license headers: adding missing; updating old. + (Enis Soztutar via cutting) + +106. HADOOP-1547. Provide examples for aggregate library. + (Runping Qi via tomwhite) + +107. HADOOP-1570. Permit jobs to enable and disable the use of + hadoop's native library. (Arun C Murthy via cutting) + +108. HADOOP-1433. Add job priority. (Johan Oskarsson via tomwhite) + +109. HADOOP-1597. Add status reports and post-upgrade options to HDFS + distributed upgrade. (Konstantin Shvachko via cutting) + +110. HADOOP-1524. Permit user task logs to appear as they're + created. (Michael Bieniosek via cutting) + +111. HADOOP-1599. Fix distcp bug on Windows. (Senthil Subramanian via cutting) + +112. HADOOP-1562. Add JVM metrics, including GC and logging stats. + (David Bowen via cutting) + +113. HADOOP-1613. Fix "DFS Health" page to display correct time of + last contact. (Dhruba Borthakur via cutting) + +114. HADOOP-1134. Add optimized checksum support to HDFS. Checksums + are now stored with each block, rather than as parallel files. + This reduces the namenode's memory requirements and increases + data integrity. (Raghu Angadi via cutting) + +115. HADOOP-1400. Make JobClient retry requests, so that clients can + survive jobtracker problems. (omalley via cutting) + +116. HADOOP-1564. Add unit tests for HDFS block-level checksums. + (Dhruba Borthakur via cutting) + +117. HADOOP-1620. Reduce the number of abstract FileSystem methods, + simplifying implementations. (cutting) + +118. HADOOP-1625. Fix a "could not move files" exception in datanode. + (Raghu Angadi via cutting) + +119. HADOOP-1624. Fix an infinite loop in datanode. (Raghu Angadi via cutting) + +120. HADOOP-1084. Switch mapred file cache to use file modification + time instead of checksum to detect file changes, as checksums are + no longer easily accessed. (Arun C Murthy via cutting) + +130. HADOOP-1623. Fix an infinite loop when copying directories. + (Dhruba Borthakur via cutting) + +131. HADOOP-1603. Fix a bug in namenode initialization where + default replication is sometimes reset to one on restart. + (Raghu Angadi via cutting) + +132. HADOOP-1635. Remove hardcoded keypair name and fix launch-hadoop-cluster + to support later versions of ec2-api-tools. (Stu Hood via tomwhite) + +133. HADOOP-1638. Fix contrib EC2 scripts to support NAT addressing. + (Stu Hood via tomwhite) + +134. HADOOP-1632. Fix an IllegalArgumentException in fsck. + (Hairong Kuang via cutting) + +135. HADOOP-1619. Fix FSInputChecker to not attempt to read past EOF. + (Hairong Kuang via cutting) + +136. HADOOP-1640. Fix TestDecommission on Windows. + (Dhruba Borthakur via cutting) + +137. HADOOP-1587. Fix TestSymLink to get required system properties. + (Devaraj Das via omalley) + +138. HADOOP-1628. Add block CRC protocol unit tests. (Raghu Angadi via omalley) + +139. HADOOP-1653. FSDirectory code-cleanups. FSDirectory.INode + becomes a static class. (Christophe Taton via dhruba) + +140. HADOOP-1066. Restructure documentation to make more user + friendly. (Connie Kleinjans and Jeff Hammerbacher via cutting) + +141. HADOOP-1551. libhdfs supports setting replication factor and + retrieving modification time of files. (Sameer Paranjpye via dhruba) + +141. HADOOP-1647. FileSystem.getFileStatus returns valid values for "/". + (Dhruba Borthakur via dhruba) + +142. HADOOP-1657. Fix NNBench to ensure that the block size is a + multiple of bytes.per.checksum. (Raghu Angadi via dhruba) + +143. HADOOP-1553. Replace user task output and log capture code to use shell + redirection instead of copier threads in the TaskTracker. Capping the + size of the output is now done via tail in memory and thus should not be + large. The output of the tasklog servlet is not forced into UTF8 and is + not buffered entirely in memory. (omalley) + Configuration changes to hadoop-default.xml: + remove mapred.userlog.num.splits + remove mapred.userlog.purge.splits + change default mapred.userlog.limit.kb to 0 (no limit) + change default mapred.userlog.retain.hours to 24 + Configuration changes to log4j.properties: + remove log4j.appender.TLA.noKeepSplits + remove log4j.appender.TLA.purgeLogSplits + remove log4j.appender.TLA.logsRetainHours + URL changes: + http://<tasktracker>/tasklog.jsp -> http://<tasktracker>tasklog with + parameters limited to start and end, which may be positive (from + start) or negative (from end). + Environment: + require bash (v2 or later) and tail + +144. HADOOP-1659. Fix a job id/job name mixup. (Arun C. Murthy via omalley) + +145. HADOOP-1665. With HDFS Trash enabled and the same file was created + and deleted more than once, the suceeding deletions creates Trash item + names suffixed with a integer. (Dhruba Borthakur via dhruba) + +146. HADOOP-1666. FsShell object can be used for multiple fs commands. + (Dhruba Borthakur via dhruba) + +147. HADOOP-1654. Remove performance regression introduced by Block CRC. + (Raghu Angadi via dhruba) + +148. HADOOP-1680. Improvements to Block CRC upgrade messages. + (Raghu Angadi via dhruba) + +149. HADOOP-71. Allow Text and SequenceFile Map/Reduce inputs from non-default + filesystems. (omalley) + +150. HADOOP-1568. Expose HDFS as xml/http filesystem to provide cross-version + compatability. (Chris Douglas via omalley) + +151. HADOOP-1668. Added an INCOMPATIBILITY section to CHANGES.txt. (nigel) + +152. HADOOP-1629. Added a upgrade test for HADOOP-1134. + (Raghu Angadi via nigel) + +153. HADOOP-1698. Fix performance problems on map output sorting for jobs + with large numbers of reduces. (Devaraj Das via omalley) + +154. HADOOP-1716. Fix a Pipes wordcount example to remove the 'file:' + schema from its output path. (omalley via cutting) + +155. HADOOP-1714. Fix TestDFSUpgradeFromImage to work on Windows. + (Raghu Angadi via nigel) + +156. HADOOP-1663. Return a non-zero exit code if streaming fails. (Lohit Renu + via omalley) + +157. HADOOP-1712. Fix an unhandled exception on datanode during block + CRC upgrade. (Raghu Angadi via cutting) + +158. HADOOP-1717. Fix TestDFSUpgradeFromImage to work on Solaris. + (nigel via cutting) + +159. HADOOP-1437. Add Eclipse plugin in contrib. + (Eugene Hung and Christophe Taton via cutting) + + +Release 0.13.0 - 2007-06-08 + + 1. HADOOP-1047. Fix TestReplication to succeed more reliably. + (Hairong Kuang via cutting) + + 2. HADOOP-1063. Fix a race condition in MiniDFSCluster test code. + (Hairong Kuang via cutting) + + 3. HADOOP-1101. In web ui, split shuffle statistics from reduce + statistics, and add some task averages. (Devaraj Das via cutting) + + 4. HADOOP-1071. Improve handling of protocol version mismatch in + JobTracker. (Tahir Hashmi via cutting) + + 5. HADOOP-1116. Increase heap size used for contrib unit tests. + (Philippe Gassmann via cutting) + + 6. HADOOP-1120. Add contrib/data_join, tools to simplify joining + data from multiple sources using MapReduce. (Runping Qi via cutting) + + 7. HADOOP-1064. Reduce log level of some DFSClient messages. + (Dhruba Borthakur via cutting) + + 8. HADOOP-1137. Fix StatusHttpServer to work correctly when + resources are in a jar file. (Benjamin Reed via cutting) + + 9. HADOOP-1094. Optimize generated Writable implementations for + records to not allocate a new BinaryOutputArchive or + BinaryInputArchive per call. (Milind Bhandarkar via cutting) + +10. HADOOP-1068. Improve error message for clusters with 0 datanodes. + (Dhruba Borthakur via tomwhite) + +11. HADOOP-1122. Fix divide-by-zero exception in FSNamesystem + chooseTarget method. (Dhruba Borthakur via tomwhite) + +12. HADOOP-1131. Add a closeAll() static method to FileSystem. + (Philippe Gassmann via tomwhite) + +13. HADOOP-1085. Improve port selection in HDFS and MapReduce test + code. Ports are now selected by the OS during testing rather than + by probing for free ports, improving test reliability. + (Arun C Murthy via cutting) + +14. HADOOP-1153. Fix HDFS daemons to correctly stop their threads. + (Konstantin Shvachko via cutting) + +15. HADOOP-1146. Add a counter for reduce input keys and rename the + "reduce input records" counter to be "reduce input groups". + (David Bowen via cutting) + +16. HADOOP-1165. In records, replace idential generated toString + methods with a method on the base class. (Milind Bhandarkar via cutting) + +17. HADOOP-1164. Fix TestReplicationPolicy to specify port zero, so + that a free port is automatically selected. (omalley via cutting) + +18. HADOOP-1166. Add a NullOutputFormat and use it in the + RandomWriter example. (omalley via cutting) + +19. HADOOP-1169. Fix a cut/paste error in CopyFiles utility so that + S3-based source files are correctly copied. (Michael Stack via cutting) + +20. HADOOP-1167. Remove extra synchronization in InMemoryFileSystem. + (omalley via cutting) + +21. HADOOP-1110. Fix an off-by-one error counting map inputs. + (David Bowen via cutting) + +22. HADOOP-1178. Fix a NullPointerException during namenode startup. + (Dhruba Borthakur via cutting) + +23. HADOOP-1011. Fix a ConcurrentModificationException when viewing + job history. (Tahir Hashmi via cutting) + +24. HADOOP-672. Improve help for fs shell commands. + (Dhruba Borthakur via cutting) + +25. HADOOP-1170. Improve datanode performance by removing device + checks from common operations. (Igor Bolotin via cutting) + +26. HADOOP-1090. Fix SortValidator's detection of whether the input + file belongs to the sort-input or sort-output directory. + (Arun C Murthy via tomwhite) + +27. HADOOP-1081. Fix bin/hadoop on Darwin. (Michael Bieniosek via cutting) + +28. HADOOP-1045. Add contrib/hbase, a BigTable-like online database. + (Jim Kellerman via cutting) + +29. HADOOP-1156. Fix a NullPointerException in MiniDFSCluster. + (Hairong Kuang via cutting) + +30. HADOOP-702. Add tools to help automate HDFS upgrades. + (Konstantin Shvachko via cutting) + +31. HADOOP-1163. Fix ganglia metrics to aggregate metrics from different + hosts properly. (Michael Bieniosek via tomwhite) + +32. HADOOP-1194. Make compression style record level for map output + compression. (Arun C Murthy via tomwhite) + +33. HADOOP-1187. Improve DFS Scalability: avoid scanning entire list of + datanodes in getAdditionalBlocks. (Dhruba Borthakur via tomwhite) + +34. HADOOP-1133. Add tool to analyze and debug namenode on a production + cluster. (Dhruba Borthakur via tomwhite) + +35. HADOOP-1151. Remove spurious printing to stderr in streaming + PipeMapRed. (Koji Noguchi via tomwhite) + +36. HADOOP-988. Change namenode to use a single map of blocks to metadata. + (Raghu Angadi via tomwhite) + +37. HADOOP-1203. Change UpgradeUtilities used by DFS tests to use + MiniDFSCluster to start and stop NameNode/DataNodes. + (Nigel Daley via tomwhite) + +38. HADOOP-1217. Add test.timeout property to build.xml, so that + long-running unit tests may be automatically terminated. + (Nigel Daley via cutting) + +39. HADOOP-1149. Improve DFS Scalability: make + processOverReplicatedBlock() a no-op if blocks are not + over-replicated. (Raghu Angadi via tomwhite) + +40. HADOOP-1149. Improve DFS Scalability: optimize getDistance(), + contains(), and isOnSameRack() in NetworkTopology. + (Hairong Kuang via tomwhite) + +41. HADOOP-1218. Make synchronization on TaskTracker's RunningJob + object consistent. (Devaraj Das via tomwhite) + +42. HADOOP-1219. Ignore progress report once a task has reported as + 'done'. (Devaraj Das via tomwhite) + +43. HADOOP-1114. Permit user to specify additional CLASSPATH elements + with a HADOOP_CLASSPATH environment variable. (cutting) + +44. HADOOP-1198. Remove ipc.client.timeout parameter override from + unit test configuration. Using the default is more robust and + has almost the same run time. (Arun C Murthy via tomwhite) + +45. HADOOP-1211. Remove deprecated constructor and unused static + members in DataNode class. (Konstantin Shvachko via tomwhite) + +46. HADOOP-1136. Fix ArrayIndexOutOfBoundsException in + FSNamesystem$UnderReplicatedBlocks add() method. + (Hairong Kuang via tomwhite) + +47. HADOOP-978. Add the client name and the address of the node that + previously started to create the file to the description of + AlreadyBeingCreatedException. (Konstantin Shvachko via tomwhite) + +48. HADOOP-1001. Check the type of keys and values generated by the + mapper against the types specified in JobConf. + (Tahir Hashmi via tomwhite) + +49. HADOOP-971. Improve DFS Scalability: Improve name node performance + by adding a hostname to datanodes map. (Hairong Kuang via tomwhite) + +50. HADOOP-1189. Fix 'No space left on device' exceptions on datanodes. + (Raghu Angadi via tomwhite) + +51. HADOOP-819. Change LineRecordWriter to not insert a tab between + key and value when either is null, and to print nothing when both + are null. (Runping Qi via cutting) + +52. HADOOP-1204. Rename InputFormatBase to be FileInputFormat, and + deprecate InputFormatBase. Also make LineRecordReader easier to + extend. (Runping Qi via cutting) + +53. HADOOP-1213. Improve logging of errors by IPC server, to + consistently include the service name and the call. (cutting) + +54. HADOOP-1238. Fix metrics reporting by TaskTracker to correctly + track maps_running and reduces_running. + (Michael Bieniosek via cutting) + +55. HADOOP-1093. Fix a race condition in HDFS where blocks were + sometimes erased before they were reported written. + (Dhruba Borthakur via cutting) + +56. HADOOP-1239. Add a package name to some testjar test classes. + (Jim Kellerman via cutting) + +57. HADOOP-1241. Fix NullPointerException in processReport when + namenode is restarted. (Dhruba Borthakur via tomwhite) + +58. HADOOP-1244. Fix stop-dfs.sh to no longer incorrectly specify + slaves file for stopping datanode. + (Michael Bieniosek via tomwhite) + +59. HADOOP-1253. Fix ConcurrentModificationException and + NullPointerException in JobControl. + (Johan Oskarson via tomwhite) + +60. HADOOP-1256. Fix NameNode so that multiple DataNodeDescriptors + can no longer be created on startup. (Hairong Kuang via cutting) + +61. HADOOP-1214. Replace streaming classes with new counterparts + from Hadoop core. (Runping Qi via tomwhite) + +62. HADOOP-1250. Move a chmod utility from streaming to FileUtil. + (omalley via cutting) + +63. HADOOP-1258. Fix TestCheckpoint test case to wait for + MiniDFSCluster to be active. (Nigel Daley via tomwhite) + +64. HADOOP-1148. Re-indent all Java source code to consistently use + two spaces per indent level. (cutting) + +65. HADOOP-1251. Add a method to Reporter to get the map InputSplit. + (omalley via cutting) + +66. HADOOP-1224. Fix "Browse the filesystem" link to no longer point + to dead datanodes. (Enis Soztutar via tomwhite) + +67. HADOOP-1154. Fail a streaming task if the threads reading from or + writing to the streaming process fail. (Koji Noguchi via tomwhite) + +68. HADOOP-968. Move shuffle and sort to run in reduce's child JVM, + rather than in TaskTracker. (Devaraj Das via cutting) + +69. HADOOP-1111. Add support for client notification of job + completion. If the job configuration has a job.end.notification.url + property it will make a HTTP GET request to the specified URL. + The number of retries and the interval between retries is also + configurable. (Alejandro Abdelnur via tomwhite) + +70. HADOOP-1275. Fix misspelled job notification property in + hadoop-default.xml. (Alejandro Abdelnur via tomwhite) + +71. HADOOP-1152. Fix race condition in MapOutputCopier.copyOutput file + rename causing possible reduce task hang. + (Tahir Hashmi via tomwhite) + +72. HADOOP-1050. Distinguish between failed and killed tasks so as to + not count a lost tasktracker against the job. + (Arun C Murthy via tomwhite) + +73. HADOOP-1271. Fix StreamBaseRecordReader to be able to log record + data that's not UTF-8. (Arun C Murthy via tomwhite) + +74. HADOOP-1190. Fix unchecked warnings in main Hadoop code. + (tomwhite) + +75. HADOOP-1127. Fix AlreadyBeingCreatedException in namenode for + jobs run with speculative execution. + (Arun C Murthy via tomwhite) + +76. HADOOP-1282. Omnibus HBase patch. Improved tests & configuration. + (Jim Kellerman via cutting) + +77. HADOOP-1262. Make dfs client try to read from a different replica + of the checksum file when a checksum error is detected. + (Hairong Kuang via tomwhite) + +78. HADOOP-1279. Fix JobTracker to maintain list of recently + completed jobs by order of completion, not submission. + (Arun C Murthy via cutting) + +79. HADOOP-1284. In contrib/streaming, permit flexible specification + of field delimiter and fields for partitioning and sorting. + (Runping Qi via cutting) + +80. HADOOP-1176. Fix a bug where reduce would hang when a map had + more than 2GB of output for it. (Arun C Murthy via cutting) + +81. HADOOP-1293. Fix contrib/streaming to print more than the first + twenty lines of standard error. (Koji Noguchi via cutting) + +82. HADOOP-1297. Fix datanode so that requests to remove blocks that + do not exist no longer causes block reports to be re-sent every + second. (Dhruba Borthakur via cutting) + +83. HADOOP-1216. Change MapReduce so that, when numReduceTasks is + zero, map outputs are written directly as final output, skipping + shuffle, sort and reduce. Use this to implement reduce=NONE + option in contrib/streaming. (Runping Qi via cutting) + +84. HADOOP-1294. Fix unchecked warnings in main Hadoop code under + Java 6. (tomwhite) + +85. HADOOP-1299. Fix so that RPC will restart after RPC.stopClient() + has been called. (Michael Stack via cutting) + +86. HADOOP-1278. Improve blacklisting of TaskTrackers by JobTracker, + to reduce false positives. (Arun C Murthy via cutting) + +87. HADOOP-1290. Move contrib/abacus into mapred/lib/aggregate. + (Runping Qi via cutting) + +88. HADOOP-1272. Extract inner classes from FSNamesystem into separate + classes. (Dhruba Borthakur via tomwhite) + +89. HADOOP-1247. Add support to contrib/streaming for aggregate + package, formerly called Abacus. (Runping Qi via cutting) + +90. HADOOP-1061. Fix bug in listing files in the S3 filesystem. + NOTE: this change is not backwards compatible! You should use the + MigrationTool supplied to migrate existing S3 filesystem data to + the new format. Please backup your data first before upgrading + (using 'hadoop distcp' for example). (tomwhite) + +91. HADOOP-1304. Make configurable the maximum number of task + attempts before a job fails. (Devaraj Das via cutting) + +92. HADOOP-1308. Use generics to restrict types when classes are + passed as parameters to JobConf methods. (Michael Bieniosek via cutting) + +93. HADOOP-1312. Fix a ConcurrentModificationException in NameNode + that killed the heartbeat monitoring thread. + (Dhruba Borthakur via cutting) + +94. HADOOP-1315. Clean up contrib/streaming, switching it to use core + classes more and removing unused code. (Runping Qi via cutting) + +95. HADOOP-485. Allow a different comparator for grouping keys in + calls to reduce. (Tahir Hashmi via cutting) + +96. HADOOP-1322. Fix TaskTracker blacklisting to work correctly in + one- and two-node clusters. (Arun C Murthy via cutting) + +97. HADOOP-1144. Permit one to specify a maximum percentage of tasks + that can fail before a job is aborted. The default is zero. + (Arun C Murthy via cutting) + +98. HADOOP-1184. Fix HDFS decomissioning to complete when the only + copy of a block is on a decommissioned node. (Dhruba Borthakur via cutting) + +99. HADOOP-1263. Change DFSClient to retry certain namenode calls + with a random, exponentially increasing backoff time, to avoid + overloading the namenode on, e.g., job start. (Hairong Kuang via cutting) + +100. HADOOP-1325. First complete, functioning version of HBase. + (Jim Kellerman via cutting) + +101. HADOOP-1276. Make tasktracker expiry interval configurable. + (Arun C Murthy via cutting) + +102. HADOOP-1326. Change JobClient#RunJob() to return the job. + (omalley via cutting) + +103. HADOOP-1270. Randomize the fetch of map outputs, speeding the + shuffle. (Arun C Murthy via cutting) + +104. HADOOP-1200. Restore disk checking lost in HADOOP-1170. + (Hairong Kuang via cutting) + +105. HADOOP-1252. Changed MapReduce's allocation of local files to + use round-robin among available devices, rather than a hashcode. + More care is also taken to not allocate files on full or offline + drives. (Devaraj Das via cutting) + +106. HADOOP-1324. Change so that an FSError kills only the task that + generates it rather than the entire task tracker. + (Arun C Murthy via cutting) + +107. HADOOP-1310. Fix unchecked warnings in aggregate code. (tomwhite) + +108. HADOOP-1255. Fix a bug where the namenode falls into an infinite + loop trying to remove a dead node. (Hairong Kuang via cutting) + +109. HADOOP-1160. Fix DistributedFileSystem.close() to close the + underlying FileSystem, correctly aborting files being written. + (Hairong Kuang via cutting) + +110. HADOOP-1341. Fix intermittent failures in HBase unit tests + caused by deadlock. (Jim Kellerman via cutting) + +111. HADOOP-1350. Fix shuffle performance problem caused by forcing + chunked encoding of map outputs. (Devaraj Das via cutting) + +112. HADOOP-1345. Fix HDFS to correctly retry another replica when a + checksum error is encountered. (Hairong Kuang via cutting) + +113. HADOOP-1205. Improve synchronization around HDFS block map. + (Hairong Kuang via cutting) + +114. HADOOP-1353. Fix a potential NullPointerException in namenode. + (Dhruba Borthakur via cutting) + +115. HADOOP-1354. Fix a potential NullPointerException in FsShell. + (Hairong Kuang via cutting) + +116. HADOOP-1358. Fix a potential bug when DFSClient calls skipBytes. + (Hairong Kuang via cutting) + +117. HADOOP-1356. Fix a bug in ValueHistogram. (Runping Qi via cutting) + +118. HADOOP-1363. Fix locking bug in JobClient#waitForCompletion(). + (omalley via cutting) + +119. HADOOP-1368. Fix inconsistent synchronization in JobInProgress. + (omalley via cutting) + +120. HADOOP-1369. Fix inconsistent synchronization in TaskTracker. + (omalley via cutting) + +121. HADOOP-1361. Fix various calls to skipBytes() to check return + value. (Hairong Kuang via cutting) + +122. HADOOP-1388. Fix a potential NullPointerException in web ui. + (Devaraj Das via cutting) + +123. HADOOP-1385. Fix MD5Hash#hashCode() to generally hash to more + than 256 values. (omalley via cutting) + +124. HADOOP-1386. Fix Path to not permit the empty string as a + path, as this has lead to accidental file deletion. Instead + force applications to use "." to name the default directory. + (Hairong Kuang via cutting) + +125. HADOOP-1407. Fix integer division bug in JobInProgress which + meant failed tasks didn't cause the job to fail. + (Arun C Murthy via tomwhite) + +126. HADOOP-1427. Fix a typo that caused GzipCodec to incorrectly use + a very small input buffer. (Espen Amble Kolstad via cutting) + +127. HADOOP-1435. Fix globbing code to no longer use the empty string + to indicate the default directory, per HADOOP-1386. + (Hairong Kuang via cutting) + +128. HADOOP-1411. Make task retry framework handle + AlreadyBeingCreatedException when wrapped as a RemoteException. + (Hairong Kuang via tomwhite) + +129. HADOOP-1242. Improve handling of DFS upgrades. + (Konstantin Shvachko via cutting) + +130. HADOOP-1332. Fix so that TaskTracker exits reliably during unit + tests on Windows. (omalley via cutting) + +131. HADOOP-1431. Fix so that sort progress reporting during map runs + only while sorting, so that stuck maps are correctly terminated. + (Devaraj Das and Arun C Murthy via cutting) + +132. HADOOP-1452. Change TaskTracker.MapOutputServlet.doGet.totalRead + to a long, permitting map outputs to exceed 2^31 bytes. + (omalley via cutting) + +133. HADOOP-1443. Fix a bug opening zero-length files in HDFS. + (Konstantin Shvachko via cutting) + + +Release 0.12.3 - 2007-04-06 + + 1. HADOOP-1162. Fix bug in record CSV and XML serialization of + binary values. (Milind Bhandarkar via cutting) + + 2. HADOOP-1123. Fix NullPointerException in LocalFileSystem when + trying to recover from a checksum error. + (Hairong Kuang & Nigel Daley via tomwhite) + + 3. HADOOP-1177. Fix bug where IOException in MapOutputLocation.getFile + was not being logged. (Devaraj Das via tomwhite) + + 4. HADOOP-1175. Fix bugs in JSP for displaying a task's log messages. + (Arun C Murthy via cutting) + + 5. HADOOP-1191. Fix map tasks to wait until sort progress thread has + stopped before reporting the task done. (Devaraj Das via cutting) + + 6. HADOOP-1192. Fix an integer overflow bug in FSShell's 'dus' + command and a performance problem in HDFS's implementation of it. + (Hairong Kuang via cutting) + + 7. HADOOP-1105. Fix reducers to make "progress" while iterating + through values. (Devaraj Das & Owen O'Malley via tomwhite) + + 8. HADOOP-1179. Make Task Tracker close index file as soon as the read + is done when serving get-map-output requests. + (Devaraj Das via tomwhite) + + +Release 0.12.2 - 2007-23-17 + + 1. HADOOP-1135. Fix bug in block report processing which may cause + the namenode to delete blocks. (Dhruba Borthakur via tomwhite) + + 2. HADOOP-1145. Make XML serializer and deserializer classes public + in record package. (Milind Bhandarkar via cutting) + + 3. HADOOP-1140. Fix a deadlock in metrics. (David Bowen via cutting) + + 4. HADOOP-1150. Fix streaming -reducer and -mapper to give them + defaults. (Owen O'Malley via tomwhite) + + +Release 0.12.1 - 2007-03-17 + + 1. HADOOP-1035. Fix a StackOverflowError in FSDataSet. + (Raghu Angadi via cutting) + + 2. HADOOP-1053. Fix VInt representation of negative values. Also + remove references in generated record code to methods outside of + the record package and improve some record documentation. + (Milind Bhandarkar via cutting) + + 3. HADOOP-1067. Compile fails if Checkstyle jar is present in lib + directory. Also remove dependency on a particular Checkstyle + version number. (tomwhite) + + 4. HADOOP-1060. Fix an IndexOutOfBoundsException in the JobTracker + that could cause jobs to hang. (Arun C Murthy via cutting) + + 5. HADOOP-1077. Fix a race condition fetching map outputs that could + hang reduces. (Devaraj Das via cutting) + + 6. HADOOP-1083. Fix so that when a cluster restarts with a missing + datanode, its blocks are replicated. (Hairong Kuang via cutting) + + 7. HADOOP-1082. Fix a NullPointerException in ChecksumFileSystem. + (Hairong Kuang via cutting) + + 8. HADOOP-1088. Fix record serialization of negative values. + (Milind Bhandarkar via cutting) + + 9. HADOOP-1080. Fix bug in bin/hadoop on Windows when native + libraries are present. (ab via cutting) + +10. HADOOP-1091. Fix a NullPointerException in MetricsRecord. + (David Bowen via tomwhite) + +11. HADOOP-1092. Fix a NullPointerException in HeartbeatMonitor + thread. (Hairong Kuang via tomwhite) + +12. HADOOP-1112. Fix a race condition in Hadoop metrics. + (David Bowen via tomwhite) + +13. HADOOP-1108. Checksummed file system should retry reading if a + different replica is found when handling ChecksumException. + (Hairong Kuang via tomwhite) + +14. HADOOP-1070. Fix a problem with number of racks and datanodes + temporarily doubling. (Konstantin Shvachko via tomwhite) + +15. HADOOP-1099. Fix NullPointerException in JobInProgress. + (Gautam Kowshik via tomwhite) + +16. HADOOP-1115. Fix bug where FsShell copyToLocal doesn't + copy directories. (Hairong Kuang via tomwhite) + +17. HADOOP-1109. Fix NullPointerException in StreamInputFormat. + (Koji Noguchi via tomwhite) + +18. HADOOP-1117. Fix DFS scalability: when the namenode is + restarted it consumes 80% CPU. (Dhruba Borthakur via + tomwhite) + +19. HADOOP-1089. Make the C++ version of write and read v-int + agree with the Java versions. (Milind Bhandarkar via + tomwhite) + +20. HADOOP-1096. Rename InputArchive and OutputArchive and + make them public. (Milind Bhandarkar via tomwhite) + +21. HADOOP-1128. Fix missing progress information in map tasks. + (Espen Amble Kolstad, Andrzej Bialecki, and Owen O'Malley + via tomwhite) + +22. HADOOP-1129. Fix DFSClient to not hide IOExceptions in + flush method. (Hairong Kuang via tomwhite) + +23. HADOOP-1126. Optimize CPU usage for under replicated blocks + when cluster restarts. (Hairong Kuang via tomwhite) + + +Release 0.12.0 - 2007-03-02 + + 1. HADOOP-975. Separate stdout and stderr from tasks. + (Arun C Murthy via cutting) + + 2. HADOOP-982. Add some setters and a toString() method to + BytesWritable. (omalley via cutting) + + 3. HADOOP-858. Move contrib/smallJobsBenchmark to src/test, removing + obsolete bits. (Nigel Daley via cutting) + + 4. HADOOP-992. Fix MiniMR unit tests to use MiniDFS when specified, + rather than the local FS. (omalley via cutting) + + 5. HADOOP-954. Change use of metrics to use callback mechanism. + Also rename utility class Metrics to MetricsUtil. + (David Bowen & Nigel Daley via cutting) + + 6. HADOOP-893. Improve HDFS client's handling of dead datanodes. + The set is no longer reset with each block, but rather is now + maintained for the life of an open file. (Raghu Angadi via cutting) + + 7. HADOOP-882. Upgrade to jets3t version 0.5, used by the S3 + FileSystem. This version supports retries. (Michael Stack via cutting) + + 8. HADOOP-977. Send task's stdout and stderr to JobClient's stdout + and stderr respectively, with each line tagged by the task's name. + (Arun C Murthy via cutting) + + 9. HADOOP-761. Change unit tests to not use /tmp. (Nigel Daley via cutting) + +10. HADOOP-1007. Make names of metrics used in Hadoop unique. + (Nigel Daley via cutting) + +11. HADOOP-491. Change mapred.task.timeout to be per-job, and make a + value of zero mean no timeout. Also change contrib/streaming to + disable task timeouts. (Arun C Murthy via cutting) + +12. HADOOP-1010. Add Reporter.NULL, a Reporter implementation that + does nothing. (Runping Qi via cutting) + +13. HADOOP-923. In HDFS NameNode, move replication computation to a + separate thread, to improve heartbeat processing time. + (Dhruba Borthakur via cutting) + +14. HADOOP-476. Rewrite contrib/streaming command-line processing, + improving parameter validation. (Sanjay Dahiya via cutting) + +15. HADOOP-973. Improve error messages in Namenode. This should help + to track down a problem that was appearing as a + NullPointerException. (Dhruba Borthakur via cutting) + +16. HADOOP-649. Fix so that jobs with no tasks are not lost. + (Thomas Friol via cutting) + +17. HADOOP-803. Reduce memory use by HDFS namenode, phase I. + (Raghu Angadi via cutting) + +18. HADOOP-1021. Fix MRCaching-based unit tests on Windows. + (Nigel Daley via cutting) + +19. HADOOP-889. Remove duplicate code from HDFS unit tests. + (Milind Bhandarkar via cutting) + +20. HADOOP-943. Improve HDFS's fsck command to display the filename + for under-replicated blocks. (Dhruba Borthakur via cutting) + +21. HADOOP-333. Add validator for sort benchmark output. + (Arun C Murthy via cutting) + +22. HADOOP-947. Improve performance of datanode decomissioning. + (Dhruba Borthakur via cutting) + +23. HADOOP-442. Permit one to specify hosts allowed to connect to + namenode and jobtracker with include and exclude files. (Wendy + Chien via cutting) + +24. HADOOP-1017. Cache constructors, for improved performance. + (Ron Bodkin via cutting) + +25. HADOOP-867. Move split creation out of JobTracker to client. + Splits are now saved in a separate file, read by task processes + directly, so that user code is no longer required in the + JobTracker. (omalley via cutting) + +26. HADOOP-1006. Remove obsolete '-local' option from test code. + (Gautam Kowshik via cutting) + +27. HADOOP-952. Create a public (shared) Hadoop EC2 AMI. + The EC2 scripts now support launch of public AMIs. + (tomwhite) + +28. HADOOP-1025. Remove some obsolete code in ipc.Server. (cutting) + +29. HADOOP-997. Implement S3 retry mechanism for failed block + transfers. This includes a generic retry mechanism for use + elsewhere in Hadoop. (tomwhite) + +30. HADOOP-990. Improve HDFS support for full datanode volumes. + (Raghu Angadi via cutting) + +31. HADOOP-564. Replace uses of "dfs://" URIs with the more standard + "hdfs://". (Wendy Chien via cutting) + +32. HADOOP-1030. In unit tests, unify setting of ipc.client.timeout. + Also increase the value used from one to two seconds, in hopes of + making tests complete more reliably. (cutting) + +33. HADOOP-654. Stop assigning tasks to a tasktracker if it has + failed more than a specified number in the job. + (Arun C Murthy via cutting) + +34. HADOOP-985. Change HDFS to identify nodes by IP address rather + than by DNS hostname. (Raghu Angadi via cutting) + +35. HADOOP-248. Optimize location of map outputs to not use random + probes. (Devaraj Das via cutting) + +36. HADOOP-1029. Fix streaming's input format to correctly seek to + the start of splits. (Arun C Murthy via cutting) + +37. HADOOP-492. Add per-job and per-task counters. These are + incremented via the Reporter interface and available through the + web ui and the JobClient API. The mapreduce framework maintains a + few basic counters, and applications may add their own. Counters + are also passed to the metrics system. + (David Bowen via cutting) + +38. HADOOP-1034. Fix datanode to better log exceptions. + (Philippe Gassmann via cutting) + +39. HADOOP-878. In contrib/streaming, fix reducer=NONE to work with + multiple maps. (Arun C Murthy via cutting) + +40. HADOOP-1039. In HDFS's TestCheckpoint, avoid restarting + MiniDFSCluster so often, speeding this test. (Dhruba Borthakur via cutting) + +41. HADOOP-1040. Update RandomWriter example to use counters and + user-defined input and output formats. (omalley via cutting) + +42. HADOOP-1027. Fix problems with in-memory merging during shuffle + and re-enable this optimization. (Devaraj Das via cutting) + +43. HADOOP-1036. Fix exception handling in TaskTracker to keep tasks + from being lost. (Arun C Murthy via cutting) + +44. HADOOP-1042. Improve the handling of failed map output fetches. + (Devaraj Das via cutting) + +45. HADOOP-928. Make checksums optional per FileSystem. + (Hairong Kuang via cutting) + +46. HADOOP-1044. Fix HDFS's TestDecommission to not spuriously fail. + (Wendy Chien via cutting) + +47. HADOOP-972. Optimize HDFS's rack-aware block placement algorithm. + (Hairong Kuang via cutting) + +48. HADOOP-1043. Optimize shuffle, increasing parallelism. + (Devaraj Das via cutting) + +49. HADOOP-940. Improve HDFS's replication scheduling. + (Dhruba Borthakur via cutting) + +50. HADOOP-1020. Fix a bug in Path resolution, and a with unit tests + on Windows. (cutting) + +51. HADOOP-941. Enhance record facility. + (Milind Bhandarkar via cutting) + +52. HADOOP-1000. Fix so that log messages in task subprocesses are + not written to a task's standard error. (Arun C Murthy via cutting) + +53. HADOOP-1037. Fix bin/slaves.sh, which currently only works with + /bin/bash, to specify /bin/bash rather than /bin/sh. (cutting) + +54. HADOOP-1046. Clean up tmp from partially received stale block files. (ab) + +55. HADOOP-1041. Optimize mapred counter implementation. Also group + counters by their declaring Enum. (David Bowen via cutting) + +56. HADOOP-1032. Permit one to specify jars that will be cached + across multiple jobs. (Gautam Kowshik via cutting) + +57. HADOOP-1051. Add optional checkstyle task to build.xml. To use + this developers must download the (LGPL'd) checkstyle jar + themselves. (tomwhite via cutting) + +58. HADOOP-1049. Fix a race condition in IPC client. + (Devaraj Das via cutting) + +60. HADOOP-1056. Check HDFS include/exclude node lists with both IP + address and hostname. (Wendy Chien via cutting) + +61. HADOOP-994. In HDFS, limit the number of blocks invalidated at + once. Large lists were causing datenodes to timeout. + (Dhruba Borthakur via cutting) + +62. HADOOP-432. Add a trash feature, disabled by default. When + enabled, the FSShell 'rm' command will move things to a trash + directory in the filesystem. In HDFS, a thread periodically + checkpoints the trash and removes old checkpoints. (cutting) + + +Release 0.11.2 - 2007-02-16 + + 1. HADOOP-1009. Fix an infinite loop in the HDFS namenode. + (Dhruba Borthakur via cutting) + + 2. HADOOP-1014. Disable in-memory merging during shuffle, as this is + causing data corruption. (Devaraj Das via cutting) + + +Release 0.11.1 - 2007-02-09 + + 1. HADOOP-976. Make SequenceFile.Metadata public. (Runping Qi via cutting) + + 2. HADOOP-917. Fix a NullPointerException in SequenceFile's merger + with large map outputs. (omalley via cutting) + + 3. HADOOP-984. Fix a bug in shuffle error handling introduced by + HADOOP-331. If a map output is unavailable, the job tracker is + once more informed. (Arun C Murthy via cutting) + + 4. HADOOP-987. Fix a problem in HDFS where blocks were not removed + from neededReplications after a replication target was selected. + (Hairong Kuang via cutting) + +Release 0.11.0 - 2007-02-02 + + 1. HADOOP-781. Remove methods deprecated in 0.10 that are no longer + widely used. (cutting) + + 2. HADOOP-842. Change HDFS protocol so that the open() method is + passed the client hostname, to permit the namenode to order block + locations on the basis of network topology. + (Hairong Kuang via cutting) + + 3. HADOOP-852. Add an ant task to compile record definitions, and + use it to compile record unit tests. (Milind Bhandarkar via cutting) + + 4. HADOOP-757. Fix "Bad File Descriptor" exception in HDFS client + when an output file is closed twice. (Raghu Angadi via cutting) + + 5. [ intentionally blank ] + + 6. HADOOP-890. Replace dashes in metric names with underscores, + for better compatibility with some monitoring systems. + (Nigel Daley via cutting) + + 7. HADOOP-801. Add to jobtracker a log of task completion events. + (Sanjay Dahiya via cutting) + + 8. HADOOP-855. In HDFS, try to repair files with checksum errors. + An exception is still thrown, but corrupt blocks are now removed + when they have replicas. (Wendy Chien via cutting) + + 9. HADOOP-886. Reduce number of timer threads created by metrics API + by pooling contexts. (Nigel Daley via cutting) + +10. HADOOP-897. Add a "javac.args" property to build.xml that permits + one to pass arbitrary options to javac. (Milind Bhandarkar via cutting) + +11. HADOOP-899. Update libhdfs for changes in HADOOP-871. + (Sameer Paranjpye via cutting) + +12. HADOOP-905. Remove some dead code from JobClient. (cutting) + +13. HADOOP-902. Fix a NullPointerException in HDFS client when + closing output streams. (Raghu Angadi via cutting) + +14. HADOOP-735. Switch generated record code to use BytesWritable to + represent fields of type 'buffer'. (Milind Bhandarkar via cutting) + +15. HADOOP-830. Improve mapreduce merge performance by buffering and + merging multiple map outputs as they arrive at reduce nodes before + they're written to disk. (Devaraj Das via cutting) + +16. HADOOP-908. Add a new contrib package, Abacus, that simplifies + counting and aggregation, built on MapReduce. (Runping Qi via cutting) + +17. HADOOP-901. Add support for recursive renaming to the S3 filesystem. + (Tom White via cutting) + +18. HADOOP-912. Fix a bug in TaskTracker.isIdle() that was + sporadically causing unit test failures. (Arun C Murthy via cutting) + +19. HADOOP-909. Fix the 'du' command to correctly compute the size of + FileSystem directory trees. (Hairong Kuang via cutting) + +20. HADOOP-731. When a checksum error is encountered on a file stored + in HDFS, try another replica of the data, if any. + (Wendy Chien via cutting) + +21. HADOOP-732. Add support to SequenceFile for arbitrary metadata, + as a set of attribute value pairs. (Runping Qi via cutting) + +22. HADOOP-929. Fix PhasedFileSystem to pass configuration to + underlying FileSystem. (Sanjay Dahiya via cutting) + +23. HADOOP-935. Fix contrib/abacus to not delete pre-existing output + files, but rather to fail in this case. (Runping Qi via cutting) + +24. HADOOP-936. More metric renamings, as in HADOOP-890. + (Nigel Daley via cutting) + +25. HADOOP-856. Fix HDFS's fsck command to not report that + non-existent filesystems are healthy. (Milind Bhandarkar via cutting) + +26. HADOOP-602. Remove the dependency on Lucene's PriorityQueue + utility, by copying it into Hadoop. This facilitates using Hadoop + with different versions of Lucene without worrying about CLASSPATH + order. (Milind Bhandarkar via cutting) + +27. [ intentionally blank ] + +28. HADOOP-227. Add support for backup namenodes, which periodically + get snapshots of the namenode state. (Dhruba Borthakur via cutting) + +29. HADOOP-884. Add scripts in contrib/ec2 to facilitate running + Hadoop on an Amazon's EC2 cluster. (Tom White via cutting) + +30. HADOOP-937. Change the namenode to request re-registration of + datanodes in more circumstances. (Hairong Kuang via cutting) + +31. HADOOP-922. Optimize small forward seeks in HDFS. If data is has + likely already in flight, skip ahead rather than re-opening the + block. (Dhruba Borthakur via cutting) + +32. HADOOP-961. Add a 'job -events' sub-command that prints job + events, including task completions and failures. (omalley via cutting) + +33. HADOOP-959. Fix namenode snapshot code added in HADOOP-227 to + work on Windows. (Dhruba Borthakur via cutting) + +34. HADOOP-934. Fix TaskTracker to catch metrics exceptions that were + causing heartbeats to fail. (Arun Murthy via cutting) + +35. HADOOP-881. Fix JobTracker web interface to display the correct + number of task failures. (Sanjay Dahiya via cutting) + +36. HADOOP-788. Change contrib/streaming to subclass TextInputFormat, + permitting it to take advantage of native compression facilities. + (Sanjay Dahiya via cutting) + +37. HADOOP-962. In contrib/ec2: make scripts executable in tar file; + add a README; make the environment file use a template. + (Tom White via cutting) + +38. HADOOP-549. Fix a NullPointerException in TaskReport's + serialization. (omalley via cutting) + +39. HADOOP-963. Fix remote exceptions to have the stack trace of the + caller thread, not the IPC listener thread. (omalley via cutting) + +40. HADOOP-967. Change RPC clients to start sending a version header. + (omalley via cutting) + +41. HADOOP-964. Fix a bug introduced by HADOOP-830 where jobs failed + whose comparators and/or i/o types were in the job's jar. + (Dennis Kubes via cutting) + +42. HADOOP-969. Fix a deadlock in JobTracker. (omalley via cutting) + +43. HADOOP-862. Add support for the S3 FileSystem to the CopyFiles + tool. (Michael Stack via cutting) + +44. HADOOP-965. Fix IsolationRunner so that job's jar can be found. + (Dennis Kubes via cutting) + +45. HADOOP-309. Fix two NullPointerExceptions in StatusHttpServer. + (navychen via cutting) + +46. HADOOP-692. Add rack awareness to HDFS's placement of blocks. + (Hairong Kuang via cutting) + + +Release 0.10.1 - 2007-01-10 + + 1. HADOOP-857. Fix S3 FileSystem implementation to permit its use + for MapReduce input and output. (Tom White via cutting) + + 2. HADOOP-863. Reduce logging verbosity introduced by HADOOP-813. + (Devaraj Das via cutting) + + 3. HADOOP-815. Fix memory leaks in JobTracker. (Arun C Murthy via cutting) + + 4. HADOOP-600. Fix a race condition in JobTracker. + (Arun C Murthy via cutting) + + 5. HADOOP-864. Fix 'bin/hadoop -jar' to operate correctly when + hadoop.tmp.dir does not yet exist. (omalley via cutting) + + 6. HADOOP-866. Fix 'dfs -get' command to remove existing crc files, + if any. (Milind Bhandarkar via cutting) + + 7. HADOOP-871. Fix a bug in bin/hadoop setting JAVA_LIBRARY_PATH. + (Arun C Murthy via cutting) + + 8. HADOOP-868. Decrease the number of open files during map, + respecting io.sort.fa ctor. (Devaraj Das via cutting) + + 9. HADOOP-865. Fix S3 FileSystem so that partially created files can + be deleted. (Tom White via cutting) + +10. HADOOP-873. Pass java.library.path correctly to child processes. + (omalley via cutting) + +11. HADOOP-851. Add support for the LZO codec. This is much faster + than the default, zlib-based compression, but it is only available + when the native library is built. (Arun C Murthy via cutting) + +12. HADOOP-880. Fix S3 FileSystem to remove directories. + (Tom White via cutting) + +13. HADOOP-879. Fix InputFormatBase to handle output generated by + MapFileOutputFormat. (cutting) + +14. HADOOP-659. In HDFS, prioritize replication of blocks based on + current replication level. Blocks which are severely + under-replicated should be further replicated before blocks which + are less under-replicated. (Hairong Kuang via cutting) + +15. HADOOP-726. Deprecate FileSystem locking methods. They are not + currently usable. Locking should eventually provided as an + independent service. (Raghu Angadi via cutting) + +16. HADOOP-758. Fix exception handling during reduce so that root + exceptions are not masked by exceptions in cleanups. + (Raghu Angadi via cutting) + + +Release 0.10.0 - 2007-01-05 + + 1. HADOOP-763. Change DFS namenode benchmark to not use MapReduce. + (Nigel Daley via cutting) + + 2. HADOOP-777. Use fully-qualified hostnames for tasktrackers and + datanodes. (Mahadev Konar via cutting) + + 3. HADOOP-621. Change 'dfs -cat' to exit sooner when output has been + closed. (Dhruba Borthakur via cutting) + + 4. HADOOP-752. Rationalize some synchronization in DFS namenode. + (Dhruba Borthakur via cutting) + + 5. HADOOP-629. Fix RPC services to better check the protocol name and + version. (omalley via cutting) + + 6. HADOOP-774. Limit the number of invalid blocks returned with + heartbeats by the namenode to datanodes. Transmitting and + processing very large invalid block lists can tie up both the + namenode and datanode for too long. (Dhruba Borthakur via cutting) + + 7. HADOOP-738. Change 'dfs -get' command to not create CRC files by + default, adding a -crc option to force their creation. + (Milind Bhandarkar via cutting) + + 8. HADOOP-676. Improved exceptions and error messages for common job + input specification errors. (Sanjay Dahiya via cutting) + + 9. [Included in 0.9.2 release] + +10. HADOOP-756. Add new dfsadmin option to wait for filesystem to be + operational. (Dhruba Borthakur via cutting) + +11. HADOOP-770. Fix jobtracker web interface to display, on restart, + jobs that were running when it was last stopped. + (Sanjay Dahiya via cutting) + +12. HADOOP-331. Write all map outputs to a single file with an index, + rather than to a separate file per reduce task. This should both + speed the shuffle and make things more scalable. + (Devaraj Das via cutting) + +13. HADOOP-818. Fix contrib unit tests to not depend on core unit + tests. (omalley via cutting) + +14. HADOOP-786. Log common exception at debug level. + (Sanjay Dahiya via cutting) + +15. HADOOP-796. Provide more convenient access to failed task + information in the web interface. (Sanjay Dahiya via cutting) + +16. HADOOP-764. Reduce memory allocations in namenode some. + (Dhruba Borthakur via cutting) + +17. HADOOP-802. Update description of mapred.speculative.execution to + mention reduces. (Nigel Daley via cutting) + +18. HADOOP-806. Include link to datanodes on front page of namenode + web interface. (Raghu Angadi via cutting) + +19. HADOOP-618. Make JobSubmissionProtocol public. + (Arun C Murthy via cutting) + +20. HADOOP-782. Fully remove killed tasks. (Arun C Murthy via cutting) + +21. HADOOP-792. Fix 'dfs -mv' to return correct status. + (Dhruba Borthakur via cutting) + +22. HADOOP-673. Give each task its own working directory again. + (Mahadev Konar via cutting) + +23. HADOOP-571. Extend the syntax of Path to be a URI; to be + optionally qualified with a scheme and authority. The scheme + determines the FileSystem implementation, while the authority + determines the FileSystem instance. New FileSystem + implementations may be provided by defining an fs.<scheme>.impl + property, naming the FileSystem implementation class. This + permits easy integration of new FileSystem implementations. + (cutting) + +24. HADOOP-720. Add an HDFS white paper to website. + (Dhruba Borthakur via cutting) + +25. HADOOP-794. Fix a divide-by-zero exception when a job specifies + zero map tasks. (omalley via cutting) + +26. HADOOP-454. Add a 'dfs -dus' command that provides summary disk + usage. (Hairong Kuang via cutting) + +27. HADOOP-574. Add an Amazon S3 implementation of FileSystem. To + use this, one need only specify paths of the form + s3://id:secret@bucket/. Alternately, the AWS access key id and + secret can be specified in your config, with the properties + fs.s3.awsAccessKeyId and fs.s3.awsSecretAccessKey. + (Tom White via cutting) + +28. HADOOP-824. Rename DFSShell to be FsShell, since it applies + generically to all FileSystem implementations. (cutting) + +29. HADOOP-813. Fix map output sorting to report progress, so that + sorts which take longer than the task timeout do not fail. + (Devaraj Das via cutting) + +30. HADOOP-825. Fix HDFS daemons when configured with new URI syntax. + (omalley via cutting) + +31. HADOOP-596. Fix a bug in phase reporting during reduce. + (Sanjay Dahiya via cutting) + +32. HADOOP-811. Add a utility, MultithreadedMapRunner. + (Alejandro Abdelnur via cutting) + +33. HADOOP-829. Within HDFS, clearly separate three different + representations for datanodes: one for RPCs, one for + namenode-internal use, and one for namespace persistence. + (Dhruba Borthakur via cutting) + +34. HADOOP-823. Fix problem starting datanode when not all configured + data directories exist. (Bryan Pendleton via cutting) + +35. HADOOP-451. Add a Split interface. CAUTION: This incompatibly + changes the InputFormat and RecordReader interfaces. Not only is + FileSplit replaced with Split, but a FileSystem parameter is no + longer passed in several methods, input validation has changed, + etc. (omalley via cutting) + +36. HADOOP-814. Optimize locking in namenode. (Dhruba Borthakur via cutting) + +37. HADOOP-738. Change 'fs -put' and 'fs -get' commands to accept + standard input and output, respectively. Standard i/o is + specified by a file named '-'. (Wendy Chien via cutting) + +38. HADOOP-835. Fix a NullPointerException reading record-compressed + SequenceFiles. (Hairong Kuang via cutting) + +39. HADOOP-836. Fix a MapReduce bug on Windows, where the wrong + FileSystem was used. Also add a static FileSystem.getLocal() + method and better Path checking in HDFS, to help avoid such issues + in the future. (omalley via cutting) + +40. HADOOP-837. Improve RunJar utility to unpack jar file + hadoop.tmp.dir, rather than the system temporary directory. + (Hairong Kuang via cutting) + +41. HADOOP-841. Fix native library to build 32-bit version even when + on a 64-bit host, if a 32-bit JVM is used. (Arun C Murthy via cutting) + +42. HADOOP-838. Fix tasktracker to pass java.library.path to + sub-processes, so that libhadoop.a is found. + (Arun C Murthy via cutting) + +43. HADOOP-844. Send metrics messages on a fixed-delay schedule + instead of a fixed-rate schedule. (David Bowen via cutting) + +44. HADOOP-849. Fix OutOfMemory exceptions in TaskTracker due to a + file handle leak in SequenceFile. (Devaraj Das via cutting) + +45. HADOOP-745. Fix a synchronization bug in the HDFS namenode. + (Dhruba Borthakur via cutting) + +46. HADOOP-850. Add Writable implementations for variable-length + integers. (ab via cutting) + +47. HADOOP-525. Add raw comparators to record types. This greatly + improves record sort performance. (Milind Bhandarkar via cutting) + +48. HADOOP-628. Fix a problem with 'fs -cat' command, where some + characters were replaced with question marks. (Wendy Chien via cutting) + +49. HADOOP-804. Reduce verbosity of MapReduce logging. + (Sanjay Dahiya via cutting) + +50. HADOOP-853. Rename 'site' to 'docs', in preparation for inclusion + in releases. (cutting) + +51. HADOOP-371. Include contrib jars and site documentation in + distributions. Also add contrib and example documentation to + distributed javadoc, in separate sections. (Nigel Daley via cutting) + +52. HADOOP-846. Report progress during entire map, as sorting of + intermediate outputs may happen at any time, potentially causing + task timeouts. (Devaraj Das via cutting) + +53. HADOOP-840. In task tracker, queue task cleanups and perform them + in a separate thread. (omalley & Mahadev Konar via cutting) + +54. HADOOP-681. Add to HDFS the ability to decommission nodes. This + causes their blocks to be re-replicated on other nodes, so that + they may be removed from a cluster. (Dhruba Borthakur via cutting) + +55. HADOOP-470. In HDFS web ui, list the datanodes containing each + copy of a block. (Hairong Kuang via cutting) + +56. HADOOP-700. Change bin/hadoop to only include core jar file on + classpath, not example, test, etc. Also rename core jar to + hadoop-${version}-core.jar so that it can be more easily + identified. (Nigel Daley via cutting) + +57. HADOOP-619. Extend InputFormatBase to accept individual files and + glob patterns as MapReduce inputs, not just directories. Also + change contrib/streaming to use this. (Sanjay Dahia via cutting) + + +Release 0.9.2 - 2006-12-15 + + 1. HADOOP-639. Restructure InterTrackerProtocol to make task + accounting more reliable. (Arun C Murthy via cutting) + + 2. HADOOP-827. Turn off speculative execution by default, since it's + currently broken. (omalley via cutting) + + 3. HADOOP-791. Fix a deadlock in the task tracker. + (Mahadev Konar via cutting) + + +Release 0.9.1 - 2006-12-06 + + 1. HADOOP-780. Use ReflectionUtils to instantiate key and value + objects. (ab) + + 2. HADOOP-779. Fix contrib/streaming to work correctly with gzipped + input files. (Hairong Kuang via cutting) + + +Release 0.9.0 - 2006-12-01 + + 1. HADOOP-655. Remove most deprecated code. A few deprecated things + remain, notably UTF8 and some methods that are still required. + Also cleaned up constructors for SequenceFile, MapFile, SetFile, + and ArrayFile a bit. (cutting) + + 2. HADOOP-565. Upgrade to Jetty version 6. (Sanjay Dahiya via cutting) + + 3. HADOOP-682. Fix DFS format command to work correctly when + configured with a non-existent directory. (Sanjay Dahiya via cutting) + + 4. HADOOP-645. Fix a bug in contrib/streaming when -reducer is NONE. + (Dhruba Borthakur via cutting) + + 5. HADOOP-687. Fix a classpath bug in bin/hadoop that blocked the + servers from starting. (Sameer Paranjpye via omalley) + + 6. HADOOP-683. Remove a script dependency on bash, so it works with + dash, the new default for /bin/sh on Ubuntu. (James Todd via cutting) + + 7. HADOOP-382. Extend unit tests to run multiple datanodes. + (Milind Bhandarkar via cutting) + + 8. HADOOP-604. Fix some synchronization issues and a + NullPointerException in DFS datanode. (Raghu Angadi via cutting) + + 9. HADOOP-459. Fix memory leaks and a host of other issues with + libhdfs. (Sameer Paranjpye via cutting) + +10. HADOOP-694. Fix a NullPointerException in jobtracker. + (Mahadev Konar via cutting) + +11. HADOOP-637. Fix a memory leak in the IPC server. Direct buffers + are not collected like normal buffers, and provided little + advantage. (Raghu Angadi via cutting) + +12. HADOOP-696. Fix TestTextInputFormat unit test to not rely on the + order of directory listings. (Sameer Paranjpye via cutting) + +13. HADOOP-611. Add support for iterator-based merging to + SequenceFile. (Devaraj Das via cutting) + +14. HADOOP-688. Move DFS administrative commands to a separate + command named 'dfsadmin'. (Dhruba Borthakur via cutting) + +15. HADOOP-708. Fix test-libhdfs to return the correct status, so + that failures will break the build. (Nigel Daley via cutting) + +16. HADOOP-646. Fix namenode to handle edits files larger than 2GB. + (Milind Bhandarkar via cutting) + +17. HADOOP-705. Fix a bug in the JobTracker when failed jobs were + not completely cleaned up. (Mahadev Konar via cutting) + +18. HADOOP-613. Perform final merge while reducing. This removes one + sort pass over the data and should consequently significantly + decrease overall processing time. (Devaraj Das via cutting) + +19. HADOOP-661. Make each job's configuration visible through the web + ui. (Arun C Murthy via cutting) + +20. HADOOP-489. In MapReduce, separate user logs from system logs. + Each task's log output is now available through the web ui. (Arun + C Murthy via cutting) + +21. HADOOP-712. Fix record io's xml serialization to correctly handle + control-characters. (Milind Bhandarkar via cutting) + +22. HADOOP-668. Improvements to the web-based DFS browser. + (Hairong Kuang via cutting) + +23. HADOOP-715. Fix build.xml so that test logs are written in build + directory, rather than in CWD. (Arun C Murthy via cutting) + +24. HADOOP-538. Add support for building an optional native library, + libhadoop.so, that improves the performance of zlib-based + compression. To build this, specify -Dcompile.native to Ant. + (Arun C Murthy via cutting) + +25. HADOOP-610. Fix an problem when the DFS block size is configured + to be smaller than the buffer size, typically only when debugging. + (Milind Bhandarkar via cutting) + +26. HADOOP-695. Fix a NullPointerException in contrib/streaming. + (Hairong Kuang via cutting) + +27. HADOOP-652. In DFS, when a file is deleted, the block count is + now decremented. (Vladimir Krokhmalyov via cutting) + +28. HADOOP-725. In DFS, optimize block placement algorithm, + previously a performance bottleneck. (Milind Bhandarkar via cutting) + +29. HADOOP-723. In MapReduce, fix a race condition during the + shuffle, which resulted in FileNotFoundExceptions. (omalley via cutting) + +30. HADOOP-447. In DFS, fix getBlockSize(Path) to work with relative + paths. (Raghu Angadi via cutting) + +31. HADOOP-733. Make exit codes in DFShell consistent and add a unit + test. (Dhruba Borthakur via cutting) + +32. HADOOP-709. Fix contrib/streaming to work with commands that + contain control characters. (Dhruba Borthakur via cutting) + +33. HADOOP-677. In IPC, permit a version header to be transmitted + when connections are established. This will permit us to change + the format of IPC requests back-compatibly in subsequent releases. + (omalley via cutting) + +34. HADOOP-699. Fix DFS web interface so that filesystem browsing + works correctly, using the right port number. Also add support + for sorting datanode list by various columns. + (Raghu Angadi via cutting) + +35. HADOOP-76. Implement speculative reduce. Now when a job is + configured for speculative execution, both maps and reduces will + execute speculatively. Reduce outputs are written to temporary + location and moved to the final location when reduce is complete. + (Sanjay Dahiya via cutting) + +36. HADOOP-736. Roll back to Jetty 5.1.4, due to performance problems + with Jetty 6.0.1. + +37. HADOOP-739. Fix TestIPC to use different port number, making it + more reliable. (Nigel Daley via cutting) + +38. HADOOP-749. Fix a NullPointerException in jobfailures.jsp. + (omalley via cutting) + +39. HADOOP-747. Fix record serialization to work correctly when + records are embedded in Maps. (Milind Bhandarkar via cutting) + +40. HADOOP-698. Fix HDFS client not to retry the same datanode on + read failures. (Milind Bhandarkar via cutting) + +41. HADOOP-689. Add GenericWritable, to facilitate polymorphism in + MapReduce, SequenceFile, etc. (Feng Jiang via cutting) + +42. HADOOP-430. Stop datanode's HTTP server when registration with + namenode fails. (Wendy Chien via cutting) + +43. HADOOP-750. Fix a potential race condition during mapreduce + shuffle. (omalley via cutting) + +44. HADOOP-728. Fix contrib/streaming-related issues, including + '-reducer NONE'. (Sanjay Dahiya via cutting) + + +Release 0.8.0 - 2006-11-03 + + 1. HADOOP-477. Extend contrib/streaming to scan the PATH environment + variables when resolving executable program names. + (Dhruba Borthakur via cutting) + + 2. HADOOP-583. In DFSClient, reduce the log level of re-connect + attempts from 'info' to 'debug', so they are not normally shown. + (Konstantin Shvachko via cutting) + + 3. HADOOP-498. Re-implement DFS integrity checker to run server-side, + for much improved performance. (Milind Bhandarkar via cutting) + + 4. HADOOP-586. Use the jar name for otherwise un-named jobs. + (Sanjay Dahiya via cutting) + + 5. HADOOP-514. Make DFS heartbeat interval configurable. + (Milind Bhandarkar via cutting) + + 6. HADOOP-588. Fix logging and accounting of failed tasks. + (Sanjay Dahiya via cutting) + + 7. HADOOP-462. Improve command line parsing in DFSShell, so that + incorrect numbers of arguments result in informative errors rather + than ArrayOutOfBoundsException. (Dhruba Borthakur via cutting) + + 8. HADOOP-561. Fix DFS so that one replica of each block is written + locally, if possible. This was the intent, but there as a bug. + (Dhruba Borthakur via cutting) + + 9. HADOOP-610. Fix TaskTracker to survive more exceptions, keeping + tasks from becoming lost. (omalley via cutting) + +10. HADOOP-625. Add a servlet to all http daemons that displays a + stack dump, useful for debugging. (omalley via cutting) + +11. HADOOP-554. Fix DFSShell to return -1 for errors. + (Dhruba Borthakur via cutting) + +12. HADOOP-626. Correct the documentation in the NNBench example + code, and also remove a mistaken call there. + (Nigel Daley via cutting) + +13. HADOOP-634. Add missing license to many files. + (Nigel Daley via cutting) + +14. HADOOP-627. Fix some synchronization problems in MiniMRCluster + that sometimes caused unit tests to fail. (Nigel Daley via cutting) + +15. HADOOP-563. Improve the NameNode's lease policy so that leases + are held for one hour without renewal (instead of one minute). + However another attempt to create the same file will still succeed + if the lease has not been renewed within a minute. This prevents + communication or scheduling problems from causing a write to fail + for up to an hour, barring some other process trying to create the + same file. (Dhruba Borthakur via cutting) + +16. HADOOP-635. In DFSShell, permit specification of multiple files + as the source for file copy and move commands. + (Dhruba Borthakur via cutting) + +17. HADOOP-641. Change NameNode to request a fresh block report from + a re-discovered DataNode, so that no-longer-needed replications + are stopped promptly. (Konstantin Shvachko via cutting) + +18. HADOOP-642. Change IPC client to specify an explicit connect + timeout. (Konstantin Shvachko via cutting) + +19. HADOOP-638. Fix an unsynchronized access to TaskTracker's + internal state. (Nigel Daley via cutting) + +20. HADOOP-624. Fix servlet path to stop a Jetty warning on startup. + (omalley via cutting) + +21. HADOOP-578. Failed tasks are no longer placed at the end of the + task queue. This was originally done to work around other + problems that have now been fixed. Re-executing failed tasks + sooner causes buggy jobs to fail faster. (Sanjay Dahiya via cutting) + +22. HADOOP-658. Update source file headers per Apache policy. (cutting) + +23. HADOOP-636. Add MapFile & ArrayFile constructors which accept a + Progressable, and pass it down to SequenceFile. This permits + reduce tasks which use MapFile to still report progress while + writing blocks to the filesystem. (cutting) + +24. HADOOP-576. Enable contrib/streaming to use the file cache. Also + extend the cache to permit symbolic links to cached items, rather + than local file copies. (Mahadev Konar via cutting) + +25. HADOOP-482. Fix unit tests to work when a cluster is running on + the same machine, removing port conflicts. (Wendy Chien via cutting) + +26. HADOOP-90. Permit dfs.name.dir to list multiple directories, + where namenode data is to be replicated. (Milind Bhandarkar via cutting) + +27. HADOOP-651. Fix DFSCk to correctly pass parameters to the servlet + on the namenode. (Milind Bhandarkar via cutting) + +28. HADOOP-553. Change main() routines of DataNode and NameNode to + log exceptions rather than letting the JVM print them to standard + error. Also, change the hadoop-daemon.sh script to rotate + standard i/o log files. (Raghu Angadi via cutting) + +29. HADOOP-399. Fix javadoc warnings. (Nigel Daley via cutting) + +30. HADOOP-599. Fix web ui and command line to correctly report DFS + filesystem size statistics. Also improve web layout. + (Raghu Angadi via cutting) + +31. HADOOP-660. Permit specification of junit test output format. + (Nigel Daley via cutting) + +32. HADOOP-663. Fix a few unit test issues. (Mahadev Konar via cutting) + +33. HADOOP-664. Cause entire build to fail if libhdfs tests fail. + (Nigel Daley via cutting) + +34. HADOOP-633. Keep jobtracker from dying when job initialization + throws exceptions. Also improve exception handling in a few other + places and add more informative thread names. + (omalley via cutting) + +35. HADOOP-669. Fix a problem introduced by HADOOP-90 that can cause + DFS to lose files. (Milind Bhandarkar via cutting) + +36. HADOOP-373. Consistently check the value returned by + FileSystem.mkdirs(). (Wendy Chien via cutting) + +37. HADOOP-670. Code cleanups in some DFS internals: use generic + types, replace Vector with ArrayList, etc. + (Konstantin Shvachko via cutting) + +38. HADOOP-647. Permit map outputs to use a different compression + type than the job output. (omalley via cutting) + +39. HADOOP-671. Fix file cache to check for pre-existence before + creating . (Mahadev Konar via cutting) + +40. HADOOP-665. Extend many DFSShell commands to accept multiple + arguments. Now commands like "ls", "rm", etc. will operate on + multiple files. (Dhruba Borthakur via cutting) + + +Release 0.7.2 - 2006-10-18 + + 1. HADOOP-607. Fix a bug where classes included in job jars were not + found by tasks. (Mahadev Konar via cutting) + + 2. HADOOP-609. Add a unit test that checks that classes in job jars + can be found by tasks. Also modify unit tests to specify multiple + local directories. (Mahadev Konar via cutting) + + +Release 0.7.1 - 2006-10-11 + + 1. HADOOP-593. Fix a NullPointerException in the JobTracker. + (omalley via cutting) + + 2. HADOOP-592. Fix a NullPointerException in the IPC Server. Also + consistently log when stale calls are discarded. (omalley via cutting) + + 3. HADOOP-594. Increase the DFS safe-mode threshold from .95 to + .999, so that nearly all blocks must be reported before filesystem + modifications are permitted. (Konstantin Shvachko via cutting) + + 4. HADOOP-598. Fix tasks to retry when reporting completion, so that + a single RPC timeout won't fail a task. (omalley via cutting) + + 5. HADOOP-597. Fix TaskTracker to not discard map outputs for errors + in transmitting them to reduce nodes. (omalley via cutting) + + +Release 0.7.0 - 2006-10-06 + + 1. HADOOP-243. Fix rounding in the display of task and job progress + so that things are not shown to be 100% complete until they are in + fact finished. (omalley via cutting) + + 2. HADOOP-438. Limit the length of absolute paths in DFS, since the + file format used to store pathnames has some limitations. + (Wendy Chien via cutting) + + 3. HADOOP-530. Improve error messages in SequenceFile when keys or + values are of the wrong type. (Hairong Kuang via cutting) + + 4. HADOOP-288. Add a file caching system and use it in MapReduce to + cache job jar files on slave nodes. (Mahadev Konar via cutting) + + 5. HADOOP-533. Fix unit test to not modify conf directory. + (Hairong Kuang via cutting) + + 6. HADOOP-527. Permit specification of the local address that various + Hadoop daemons should bind to. (Philippe Gassmann via cutting) + + 7. HADOOP-542. Updates to contrib/streaming: reformatted source code, + on-the-fly merge sort, a fix for HADOOP-540, etc. + (Michel Tourn via cutting) + + 8. HADOOP-545. Remove an unused config file parameter. + (Philippe Gassmann via cutting) + + 9. HADOOP-548. Add an Ant property "test.output" to build.xml that + causes test output to be logged to the console. (omalley via cutting) + +10. HADOOP-261. Record an error message when map output is lost. + (omalley via cutting) + +11. HADOOP-293. Report the full list of task error messages in the + web ui, not just the most recent. (omalley via cutting) + +12. HADOOP-551. Restore JobClient's console printouts to only include + a maximum of one update per one percent of progress. + (omalley via cutting) + +13. HADOOP-306. Add a "safe" mode to DFS. The name node enters this + when less than a specified percentage of file data is complete. + Currently safe mode is only used on startup, but eventually it + will also be entered when datanodes disconnect and file data + becomes incomplete. While in safe mode no filesystem + modifications are permitted and block replication is inhibited. + (Konstantin Shvachko via cutting) + +14. HADOOP-431. Change 'dfs -rm' to not operate recursively and add a + new command, 'dfs -rmr' which operates recursively. + (Sameer Paranjpye via cutting) + +15. HADOOP-263. Include timestamps for job transitions. The web + interface now displays the start and end times of tasks and the + start times of sorting and reducing for reduce tasks. Also, + extend ObjectWritable to handle enums, so that they can be passed + as RPC parameters. (Sanjay Dahiya via cutting) + +16. HADOOP-556. Contrib/streaming: send keep-alive reports to task + tracker every 10 seconds rather than every 100 records, to avoid + task timeouts. (Michel Tourn via cutting) + +17. HADOOP-547. Fix reduce tasks to ping tasktracker while copying + data, rather than only between copies, avoiding task timeouts. + (Sanjay Dahiya via cutting) + +18. HADOOP-537. Fix src/c++/libhdfs build process to create files in + build/, no longer modifying the source tree. + (Arun C Murthy via cutting) + +19. HADOOP-487. Throw a more informative exception for unknown RPC + hosts. (Sameer Paranjpye via cutting) + +20. HADOOP-559. Add file name globbing (pattern matching) support to + the FileSystem API, and use it in DFSShell ('bin/hadoop dfs') + commands. (Hairong Kuang via cutting) + +21. HADOOP-508. Fix a bug in FSDataInputStream. Incorrect data was + returned after seeking to a random location. + (Milind Bhandarkar via cutting) + +22. HADOOP-560. Add a "killed" task state. This can be used to + distinguish kills from other failures. Task state has also been + converted to use an enum type instead of an int, uncovering a bug + elsewhere. The web interface is also updated to display killed + tasks. (omalley via cutting) + +23. HADOOP-423. Normalize Paths containing directories named "." and + "..", using the standard, unix interpretation. Also add checks in + DFS, prohibiting the use of "." or ".." as directory or file + names. (Wendy Chien via cutting) + +24. HADOOP-513. Replace map output handling with a servlet, rather + than a JSP page. This fixes an issue where + IllegalStateException's were logged, sets content-length + correctly, and better handles some errors. (omalley via cutting) + +25. HADOOP-552. Improved error checking when copying map output files + to reduce nodes. (omalley via cutting) + +26. HADOOP-566. Fix scripts to work correctly when accessed through + relative symbolic links. (Lee Faris via cutting) + +27. HADOOP-519. Add positioned read methods to FSInputStream. These + permit one to read from a stream without moving its position, and + can hence be performed by multiple threads at once on a single + stream. Implement an optimized version for DFS and local FS. + (Milind Bhandarkar via cutting) + +28. HADOOP-522. Permit block compression with MapFile and SetFile. + Since these formats are always sorted, block compression can + provide a big advantage. (cutting) + +29. HADOOP-567. Record version and revision information in builds. A + package manifest is added to the generated jar file containing + version information, and a VersionInfo utility is added that + includes further information, including the build date and user, + and the subversion revision and repository. A 'bin/hadoop + version' comand is added to show this information, and it is also + added to various web interfaces. (omalley via cutting) + +30. HADOOP-568. Fix so that errors while initializing tasks on a + tasktracker correctly report the task as failed to the jobtracker, + so that it will be rescheduled. (omalley via cutting) + +31. HADOOP-550. Disable automatic UTF-8 validation in Text. This + permits, e.g., TextInputFormat to again operate on non-UTF-8 data. + (Hairong and Mahadev via cutting) + +32. HADOOP-343. Fix mapred copying so that a failed tasktracker + doesn't cause other copies to slow. (Sameer Paranjpye via cutting) + +33. HADOOP-239. Add a persistent job history mechanism, so that basic + job statistics are not lost after 24 hours and/or when the + jobtracker is restarted. (Sanjay Dahiya via cutting) + +34. HADOOP-506. Ignore heartbeats from stale task trackers. + (Sanjay Dahiya via cutting) + +35. HADOOP-255. Discard stale, queued IPC calls. Do not process + calls whose clients will likely time out before they receive a + response. When the queue is full, new calls are now received and + queued, and the oldest calls are discarded, so that, when servers + get bogged down, they no longer develop a backlog on the socket. + This should improve some DFS namenode failure modes. + (omalley via cutting) + +36. HADOOP-581. Fix datanode to not reset itself on communications + errors with the namenode. If a request to the namenode fails, the + datanode should retry, not restart. This reduces the load on the + namenode, since restarts cause a resend of the block report. + (omalley via cutting) + + +Release 0.6.2 - 2006-09-18 + +1. HADOOP-532. Fix a bug reading value-compressed sequence files, + where an exception was thrown reporting that the full value had not + been read. (omalley via cutting) + +2. HADOOP-534. Change the default value class in JobConf to be Text + instead of the now-deprecated UTF8. This fixes the Grep example + program, which was updated to use Text, but relies on this + default. (Hairong Kuang via cutting) + + +Release 0.6.1 - 2006-09-13 + + 1. HADOOP-520. Fix a bug in libhdfs, where write failures were not + correctly returning error codes. (Arun C Murthy via cutting) + + 2. HADOOP-523. Fix a NullPointerException when TextInputFormat is + explicitly specified. Also add a test case for this. + (omalley via cutting) + + 3. HADOOP-521. Fix another NullPointerException finding the + ClassLoader when using libhdfs. (omalley via cutting) + + 4. HADOOP-526. Fix a NullPointerException when attempting to start + two datanodes in the same directory. (Milind Bhandarkar via cutting) + + 5. HADOOP-529. Fix a NullPointerException when opening + value-compressed sequence files generated by pre-0.6.0 Hadoop. + (omalley via cutting) + + +Release 0.6.0 - 2006-09-08 + + 1. HADOOP-427. Replace some uses of DatanodeDescriptor in the DFS + web UI code with DatanodeInfo, the preferred public class. + (Devaraj Das via cutting) + + 2. HADOOP-426. Fix streaming contrib module to work correctly on + Solaris. This was causing nightly builds to fail. + (Michel Tourn via cutting) + + 3. HADOOP-400. Improvements to task assignment. Tasks are no longer + re-run on nodes where they have failed (unless no other node is + available). Also, tasks are better load-balanced among nodes. + (omalley via cutting) + + 4. HADOOP-324. Fix datanode to not exit when a disk is full, but + rather simply to fail writes. (Wendy Chien via cutting) + + 5. HADOOP-434. Change smallJobsBenchmark to use standard Hadoop + scripts. (Sanjay Dahiya via cutting) + + 6. HADOOP-453. Fix a bug in Text.setCapacity(). (siren via cutting) + + + 7. HADOOP-450. Change so that input types are determined by the + RecordReader rather than specified directly in the JobConf. This + facilitates jobs with a variety of input types. + + WARNING: This contains incompatible API changes! The RecordReader + interface has two new methods that all user-defined InputFormats + must now define. Also, the values returned by TextInputFormat are + no longer of class UTF8, but now of class Text. + + 8. HADOOP-436. Fix an error-handling bug in the web ui. + (Devaraj Das via cutting) + + 9. HADOOP-455. Fix a bug in Text, where DEL was not permitted. + (Hairong Kuang via cutting) + +10. HADOOP-456. Change the DFS namenode to keep a persistent record + of the set of known datanodes. This will be used to implement a + "safe mode" where filesystem changes are prohibited when a + critical percentage of the datanodes are unavailable. + (Konstantin Shvachko via cutting) + +11. HADOOP-322. Add a job control utility. This permits one to + specify job interdependencies. Each job is submitted only after + the jobs it depends on have successfully completed. + (Runping Qi via cutting) + +12. HADOOP-176. Fix a bug in IntWritable.Comparator. + (Dick King via cutting) + +13. HADOOP-421. Replace uses of String in recordio package with Text + class, for improved handling of UTF-8 data. + (Milind Bhandarkar via cutting) + +14. HADOOP-464. Improved error message when job jar not found. + (Michel Tourn via cutting) + +15. HADOOP-469. Fix /bin/bash specifics that have crept into our + /bin/sh scripts since HADOOP-352. + (Jean-Baptiste Quenot via cutting) + +16. HADOOP-468. Add HADOOP_NICENESS environment variable to set + scheduling priority for daemons. (Vetle Roeim via cutting) + +17. HADOOP-473. Fix TextInputFormat to correctly handle more EOL + formats. Things now work correctly with CR, LF or CRLF. + (Dennis Kubes & James White via cutting) + +18. HADOOP-461. Make Java 1.5 an explicit requirement. (cutting) + +19. HADOOP-54. Add block compression to SequenceFile. One may now + specify that blocks of keys and values are compressed together, + improving compression for small keys and values. + SequenceFile.Writer's constructor is now deprecated and replaced + with a factory method. (Arun C Murthy via cutting) + +20. HADOOP-281. Prohibit DFS files that are also directories. + (Wendy Chien via cutting) + +21. HADOOP-486. Add the job username to JobStatus instances returned + by JobClient. (Mahadev Konar via cutting) + +22. HADOOP-437. contrib/streaming: Add support for gzipped inputs. + (Michel Tourn via cutting) + +23. HADOOP-463. Add variable expansion to config files. + Configuration property values may now contain variable + expressions. A variable is referenced with the syntax + '${variable}'. Variables values are found first in the + configuration, and then in Java system properties. The default + configuration is modified so that temporary directories are now + under ${hadoop.tmp.dir}, which is, by default, + /tmp/hadoop-${user.name}. (Michel Tourn via cutting) + +24. HADOOP-419. Fix a NullPointerException finding the ClassLoader + when using libhdfs. (omalley via cutting) + +25. HADOOP-460. Fix contrib/smallJobsBenchmark to use Text instead of + UTF8. (Sanjay Dahiya via cutting) + +26. HADOOP-196. Fix Configuration(Configuration) constructor to work + correctly. (Sami Siren via cutting) + +27. HADOOP-501. Fix Configuration.toString() to handle URL resources. + (Thomas Friol via cutting) + +28. HADOOP-499. Reduce the use of Strings in contrib/streaming, + replacing them with Text for better performance. + (Hairong Kuang via cutting) + +29. HADOOP-64. Manage multiple volumes with a single DataNode. + Previously DataNode would create a separate daemon per configured + volume, each with its own connection to the NameNode. Now all + volumes are handled by a single DataNode daemon, reducing the load + on the NameNode. (Milind Bhandarkar via cutting) + +30. HADOOP-424. Fix MapReduce so that jobs which generate zero splits + do not fail. (Fr??d??ric Bertin via cutting) + +31. HADOOP-408. Adjust some timeouts and remove some others so that + unit tests run faster. (cutting) + +32. HADOOP-507. Fix an IllegalAccessException in DFS. + (omalley via cutting) + +33. HADOOP-320. Fix so that checksum files are correctly copied when + the destination of a file copy is a directory. + (Hairong Kuang via cutting) + +34. HADOOP-286. In DFSClient, avoid pinging the NameNode with + renewLease() calls when no files are being written. + (Konstantin Shvachko via cutting) + +35. HADOOP-312. Close idle IPC connections. All IPC connections were + cached forever. Now, after a connection has been idle for more + than a configurable amount of time (one second by default), the + connection is closed, conserving resources on both client and + server. (Devaraj Das via cutting) + +36. HADOOP-497. Permit the specification of the network interface and + nameserver to be used when determining the local hostname + advertised by datanodes and tasktrackers. + (Lorenzo Thione via cutting) + +37. HADOOP-441. Add a compression codec API and extend SequenceFile + to use it. This will permit the use of alternate compression + codecs in SequenceFile. (Arun C Murthy via cutting) + +38. HADOOP-483. Improvements to libhdfs build and documentation. + (Arun C Murthy via cutting) + +39. HADOOP-458. Fix a memory corruption bug in libhdfs. + (Arun C Murthy via cutting) + +40. HADOOP-517. Fix a contrib/streaming bug in end-of-line detection. + (Hairong Kuang via cutting) + +41. HADOOP-474. Add CompressionCodecFactory, and use it in + TextInputFormat and TextOutputFormat. Compressed input files are + automatically decompressed when they have the correct extension. + Output files will, when output compression is specified, be + generated with an approprate extension. Also add a gzip codec and + fix problems with UTF8 text inputs. (omalley via cutting) + + +Release 0.5.0 - 2006-08-04 + + 1. HADOOP-352. Fix shell scripts to use /bin/sh instead of + /bin/bash, for better portability. + (Jean-Baptiste Quenot via cutting) + + 2. HADOOP-313. Permit task state to be saved so that single tasks + may be manually re-executed when debugging. (omalley via cutting) + + 3. HADOOP-339. Add method to JobClient API listing jobs that are + not yet complete, i.e., that are queued or running. + (Mahadev Konar via cutting) + + 4. HADOOP-355. Updates to the streaming contrib module, including + API fixes, making reduce optional, and adding an input type for + StreamSequenceRecordReader. (Michel Tourn via cutting) + + 5. HADOOP-358. Fix a NPE bug in Path.equals(). + (Fr??d??ric Bertin via cutting) + + 6. HADOOP-327. Fix ToolBase to not call System.exit() when + exceptions are thrown. (Hairong Kuang via cutting) + + 7. HADOOP-359. Permit map output to be compressed. + (omalley via cutting) + + 8. HADOOP-341. Permit input URI to CopyFiles to use the HTTP + protocol. This lets one, e.g., more easily copy log files into + DFS. (Arun C Murthy via cutting) + + 9. HADOOP-361. Remove unix dependencies from streaming contrib + module tests, making them pure java. (Michel Tourn via cutting) + +10. HADOOP-354. Make public methods to stop DFS daemons. + (Barry Kaplan via cutting) + +11. HADOOP-252. Add versioning to RPC protocols. + (Milind Bhandarkar via cutting) + +12. HADOOP-356. Add contrib to "compile" and "test" build targets, so + that this code is better maintained. (Michel Tourn via cutting) + +13. HADOOP-307. Add smallJobsBenchmark contrib module. This runs + lots of small jobs, in order to determine per-task overheads. + (Sanjay Dahiya via cutting) + +14. HADOOP-342. Add a tool for log analysis: Logalyzer. + (Arun C Murthy via cutting) + +15. HADOOP-347. Add web-based browsing of DFS content. The namenode + redirects browsing requests to datanodes. Content requests are + redirected to datanodes where the data is local when possible. + (Devaraj Das via cutting) + +16. HADOOP-351. Make Hadoop IPC kernel independent of Jetty. + (Devaraj Das via cutting) + +17. HADOOP-237. Add metric reporting to DFS and MapReduce. With only + minor configuration changes, one can now monitor many Hadoop + system statistics using Ganglia or other monitoring systems. + (Milind Bhandarkar via cutting) + +18. HADOOP-376. Fix datanode's HTTP server to scan for a free port. + (omalley via cutting) + +19. HADOOP-260. Add --config option to shell scripts, specifying an + alternate configuration directory. (Milind Bhandarkar via cutting) + +20. HADOOP-381. Permit developers to save the temporary files for + tasks whose names match a regular expression, to facilliate + debugging. (omalley via cutting) + +21. HADOOP-344. Fix some Windows-related problems with DF. + (Konstantin Shvachko via cutting) + +22. HADOOP-380. Fix reduce tasks to poll less frequently for map + outputs. (Mahadev Konar via cutting) + +23. HADOOP-321. Refactor DatanodeInfo, in preparation for + HADOOP-306. (Konstantin Shvachko & omalley via cutting) + +24. HADOOP-385. Fix some bugs in record io code generation. + (Milind Bhandarkar via cutting) + +25. HADOOP-302. Add new Text class to replace UTF8, removing + limitations of that class. Also refactor utility methods for + writing zero-compressed integers (VInts and VLongs). + (Hairong Kuang via cutting) + +26. HADOOP-335. Refactor DFS namespace/transaction logging in + namenode. (Konstantin Shvachko via cutting) + +27. HADOOP-375. Fix handling of the datanode HTTP daemon's port so + that multiple datanode's can be run on a single host. + (Devaraj Das via cutting) + +28. HADOOP-386. When removing excess DFS block replicas, remove those + on nodes with the least free space first. + (Johan Oskarson via cutting) + +29. HADOOP-389. Fix intermittent failures of mapreduce unit tests. + Also fix some build dependencies. + (Mahadev & Konstantin via cutting) + +30. HADOOP-362. Fix a problem where jobs hang when status messages + are recieved out-of-order. (omalley via cutting) + +31. HADOOP-394. Change order of DFS shutdown in unit tests to + minimize errors logged. (Konstantin Shvachko via cutting) + +32. HADOOP-396. Make DatanodeID implement Writable. + (Konstantin Shvachko via cutting) + +33. HADOOP-377. Permit one to add URL resources to a Configuration. + (Jean-Baptiste Quenot via cutting) + +34. HADOOP-345. Permit iteration over Configuration key/value pairs. + (Michel Tourn via cutting) + +35. HADOOP-409. Streaming contrib module: make configuration + properties available to commands as environment variables. + (Michel Tourn via cutting) + +36. HADOOP-369. Add -getmerge option to dfs command that appends all + files in a directory into a single local file. + (Johan Oskarson via cutting) + +37. HADOOP-410. Replace some TreeMaps with HashMaps in DFS, for + a 17% performance improvement. (Milind Bhandarkar via cutting) + +38. HADOOP-411. Add unit tests for command line parser. + (Hairong Kuang via cutting) + +39. HADOOP-412. Add MapReduce input formats that support filtering + of SequenceFile data, including sampling and regex matching. + Also, move JobConf.newInstance() to a new utility class. + (Hairong Kuang via cutting) + +40. HADOOP-226. Fix fsck command to properly consider replication + counts, now that these can vary per file. (Bryan Pendleton via cutting) + +41. HADOOP-425. Add a Python MapReduce example, using Jython. + (omalley via cutting) + + +Release 0.4.0 - 2006-06-28 + + 1. HADOOP-298. Improved progress reports for CopyFiles utility, the + distributed file copier. (omalley via cutting) + + 2. HADOOP-299. Fix the task tracker, permitting multiple jobs to + more easily execute at the same time. (omalley via cutting) + + 3. HADOOP-250. Add an HTTP user interface to the namenode, running + on port 50070. (Devaraj Das via cutting) + + 4. HADOOP-123. Add MapReduce unit tests that run a jobtracker and + tasktracker, greatly increasing code coverage. + (Milind Bhandarkar via cutting) + + 5. HADOOP-271. Add links from jobtracker's web ui to tasktracker's + web ui. Also attempt to log a thread dump of child processes + before they're killed. (omalley via cutting) + + 6. HADOOP-210. Change RPC server to use a selector instead of a + thread per connection. This should make it easier to scale to + larger clusters. Note that this incompatibly changes the RPC + protocol: clients and servers must both be upgraded to the new + version to ensure correct operation. (Devaraj Das via cutting) + + 7. HADOOP-311. Change DFS client to retry failed reads, so that a + single read failure will not alone cause failure of a task. + (omalley via cutting) + + 8. HADOOP-314. Remove the "append" phase when reducing. Map output + files are now directly passed to the sorter, without first + appending them into a single file. Now, the first third of reduce + progress is "copy" (transferring map output to reduce nodes), the + middle third is "sort" (sorting map output) and the last third is + "reduce" (generating output). Long-term, the "sort" phase will + also be removed. (omalley via cutting) + + 9. HADOOP-316. Fix a potential deadlock in the jobtracker. + (omalley via cutting) + +10. HADOOP-319. Fix FileSystem.close() to remove the FileSystem + instance from the cache. (Hairong Kuang via cutting) + +11. HADOOP-135. Fix potential deadlock in JobTracker by acquiring + locks in a consistent order. (omalley via cutting) + +12. HADOOP-278. Check for existence of input directories before + starting MapReduce jobs, making it easier to debug this common + error. (omalley via cutting) + +13. HADOOP-304. Improve error message for + UnregisterdDatanodeException to include expected node name. + (Konstantin Shvachko via cutting) + +14. HADOOP-305. Fix TaskTracker to ask for new tasks as soon as a + task is finished, rather than waiting for the next heartbeat. + This improves performance when tasks are short. + (Mahadev Konar via cutting) + +15. HADOOP-59. Add support for generic command line options. One may + now specify the filesystem (-fs), the MapReduce jobtracker (-jt), + a config file (-conf) or any configuration property (-D). The + "dfs", "fsck", "job", and "distcp" commands currently support + this, with more to be added. (Hairong Kuang via cutting) + +16. HADOOP-296. Permit specification of the amount of reserved space + on a DFS datanode. One may specify both the percentage free and + the number of bytes. (Johan Oskarson via cutting) + +17. HADOOP-325. Fix a problem initializing RPC parameter classes, and + remove the workaround used to initialize classes. + (omalley via cutting) + +18. HADOOP-328. Add an option to the "distcp" command to ignore read + errors while copying. (omalley via cutting) + +19. HADOOP-27. Don't allocate tasks to trackers whose local free + space is too low. (Johan Oskarson via cutting) + +20. HADOOP-318. Keep slow DFS output from causing task timeouts. + This incompatibly changes some public interfaces, adding a + parameter to OutputFormat.getRecordWriter() and the new method + Reporter.progress(), but it makes lots of tasks succeed that were + previously failing. (Milind Bhandarkar via cutting) + + +Release 0.3.2 - 2006-06-09 + + 1. HADOOP-275. Update the streaming contrib module to use log4j for + its logging. (Michel Tourn via cutting) + + 2. HADOOP-279. Provide defaults for log4j logging parameters, so + that things still work reasonably when Hadoop-specific system + properties are not provided. (omalley via cutting) + + 3. HADOOP-280. Fix a typo in AllTestDriver which caused the wrong + test to be run when "DistributedFSCheck" was specified. + (Konstantin Shvachko via cutting) + + 4. HADOOP-240. DFS's mkdirs() implementation no longer logs a warning + when the directory already exists. (Hairong Kuang via cutting) + + 5. HADOOP-285. Fix DFS datanodes to be able to re-join the cluster + after the connection to the namenode is lost. (omalley via cutting) + + 6. HADOOP-277. Fix a race condition when creating directories. + (Sameer Paranjpye via cutting) + + 7. HADOOP-289. Improved exception handling in DFS datanode. + (Konstantin Shvachko via cutting) + + 8. HADOOP-292. Fix client-side logging to go to standard error + rather than standard output, so that it can be distinguished from + application output. (omalley via cutting) + + 9. HADOOP-294. Fixed bug where conditions for retrying after errors + in the DFS client were reversed. (omalley via cutting) + + +Release 0.3.1 - 2006-06-05 + + 1. HADOOP-272. Fix a bug in bin/hadoop setting log + parameters. (omalley & cutting) + + 2. HADOOP-274. Change applications to log to standard output rather + than to a rolling log file like daemons. (omalley via cutting) + + 3. HADOOP-262. Fix reduce tasks to report progress while they're + waiting for map outputs, so that they do not time out. + (Mahadev Konar via cutting) + + 4. HADOOP-245 and HADOOP-246. Improvements to record io package. + (Mahadev Konar via cutting) + + 5. HADOOP-276. Add logging config files to jar file so that they're + always found. (omalley via cutting) + + +Release 0.3.0 - 2006-06-02 + + 1. HADOOP-208. Enhance MapReduce web interface, adding new pages + for failed tasks, and tasktrackers. (omalley via cutting) + + 2. HADOOP-204. Tweaks to metrics package. (David Bowen via cutting) + + 3. HADOOP-209. Add a MapReduce-based file copier. This will + copy files within or between file systems in parallel. + (Milind Bhandarkar via cutting) + + 4. HADOOP-146. Fix DFS to check when randomly generating a new block + id that no existing blocks already have that id. + (Milind Bhandarkar via cutting) + + 5. HADOOP-180. Make a daemon thread that does the actual task clean ups, so + that the main offerService thread in the taskTracker doesn't get stuck + and miss his heartbeat window. This was killing many task trackers as + big jobs finished (300+ tasks / node). (omalley via cutting) + + 6. HADOOP-200. Avoid transmitting entire list of map task names to + reduce tasks. Instead just transmit the number of map tasks and + henceforth refer to them by number when collecting map output. + (omalley via cutting) + + 7. HADOOP-219. Fix a NullPointerException when handling a checksum + exception under SequenceFile.Sorter.sort(). (cutting & stack) + + 8. HADOOP-212. Permit alteration of the file block size in DFS. The + default block size for new files may now be specified in the + configuration with the dfs.block.size property. The block size + may also be specified when files are opened. + (omalley via cutting) + + 9. HADOOP-218. Avoid accessing configuration while looping through + tasks in JobTracker. (Mahadev Konar via cutting) + +10. HADOOP-161. Add hashCode() method to DFS's Block. + (Milind Bhandarkar via cutting) + +11. HADOOP-115. Map output types may now be specified. These are also + used as reduce input types, thus permitting reduce input types to + differ from reduce output types. (Runping Qi via cutting) + +12. HADOOP-216. Add task progress to task status page. + (Bryan Pendelton via cutting) + +13. HADOOP-233. Add web server to task tracker that shows running + tasks and logs. Also add log access to job tracker web interface. + (omalley via cutting) + +14. HADOOP-205. Incorporate pending tasks into tasktracker load + calculations. (Mahadev Konar via cutting) + +15. HADOOP-247. Fix sort progress to better handle exceptions. + (Mahadev Konar via cutting) + +16. HADOOP-195. Improve performance of the transfer of map outputs to + reduce nodes by performing multiple transfers in parallel, each on + a separate socket. (Sameer Paranjpye via cutting) + +17. HADOOP-251. Fix task processes to be tolerant of failed progress + reports to their parent process. (omalley via cutting) + +18. HADOOP-325. Improve the FileNotFound exceptions thrown by + LocalFileSystem to include the name of the file. + (Benjamin Reed via cutting) + +19. HADOOP-254. Use HTTP to transfer map output data to reduce + nodes. This, together with HADOOP-195, greatly improves the + performance of these transfers. (omalley via cutting) + +20. HADOOP-163. Cause datanodes that\ are unable to either read or + write data to exit, so that the namenode will no longer target + them for new blocks and will replicate their data on other nodes. + (Hairong Kuang via cutting) + +21. HADOOP-222. Add a -setrep option to the dfs commands that alters + file replication levels. (Johan Oskarson via cutting) + +22. HADOOP-75. In DFS, only check for a complete file when the file + is closed, rather than as each block is written. + (Milind Bhandarkar via cutting) + +23. HADOOP-124. Change DFS so that datanodes are identified by a + persistent ID rather than by host and port. This solves a number + of filesystem integrity problems, when, e.g., datanodes are + restarted. (Konstantin Shvachko via cutting) + +24. HADOOP-256. Add a C API for DFS. (Arun C Murthy via cutting) + +25. HADOOP-211. Switch to use the Jakarta Commons logging internally, + configured to use log4j by default. (Arun C Murthy and cutting) + +26. HADOOP-265. Tasktracker now fails to start if it does not have a + writable local directory for temporary files. In this case, it + logs a message to the JobTracker and exits. (Hairong Kuang via cutting) + +27. HADOOP-270. Fix potential deadlock in datanode shutdown. + (Hairong Kuang via cutting) + +Release 0.2.1 - 2006-05-12 + + 1. HADOOP-199. Fix reduce progress (broken by HADOOP-182). + (omalley via cutting) + + 2. HADOOP-201. Fix 'bin/hadoop dfs -report'. (cutting) + + 3. HADOOP-207. Fix JDK 1.4 incompatibility introduced by HADOOP-96. + System.getenv() does not work in JDK 1.4. (Hairong Kuang via cutting) + + +Release 0.2.0 - 2006-05-05 + + 1. Fix HADOOP-126. 'bin/hadoop dfs -cp' now correctly copies .crc + files. (Konstantin Shvachko via cutting) + + 2. Fix HADOOP-51. Change DFS to support per-file replication counts. + (Konstantin Shvachko via cutting) + + 3. Fix HADOOP-131. Add scripts to start/stop dfs and mapred daemons. + Use these in start/stop-all scripts. (Chris Mattmann via cutting) + + 4. Stop using ssh options by default that are not yet in widely used + versions of ssh. Folks can still enable their use by uncommenting + a line in conf/hadoop-env.sh. (cutting) + + 5. Fix HADOOP-92. Show information about all attempts to run each + task in the web ui. (Mahadev konar via cutting) + + 6. Fix HADOOP-128. Improved DFS error handling. (Owen O'Malley via cutting) + + 7. Fix HADOOP-129. Replace uses of java.io.File with new class named + Path. This fixes bugs where java.io.File methods were called + directly when FileSystem methods were desired, and reduces the + likelihood of such bugs in the future. It also makes the handling + of pathnames more consistent between local and dfs FileSystems and + between Windows and Unix. java.io.File-based methods are still + available for back-compatibility, but are deprecated and will be + removed once 0.2 is released. (cutting) + + 8. Change dfs.data.dir and mapred.local.dir to be comma-separated + lists of directories, no longer be space-separated. This fixes + several bugs on Windows. (cutting) + + 9. Fix HADOOP-144. Use mapred task id for dfs client id, to + facilitate debugging. (omalley via cutting) + +10. Fix HADOOP-143. Do not line-wrap stack-traces in web ui. + (omalley via cutting) + +11. Fix HADOOP-118. In DFS, improve clean up of abandoned file + creations. (omalley via cutting) + +12. Fix HADOOP-138. Stop multiple tasks in a single heartbeat, rather + than one per heartbeat. (Stefan via cutting) + +13. Fix HADOOP-139. Remove a potential deadlock in + LocalFileSystem.lock(). (Igor Bolotin via cutting) + +14. Fix HADOOP-134. Don't hang jobs when the tasktracker is + misconfigured to use an un-writable local directory. (omalley via cutting) + +15. Fix HADOOP-115. Correct an error message. (Stack via cutting) + +16. Fix HADOOP-133. Retry pings from child to parent, in case of + (local) communcation problems. Also log exit status, so that one + can distinguish patricide from other deaths. (omalley via cutting) + +17. Fix HADOOP-142. Avoid re-running a task on a host where it has + previously failed. (omalley via cutting) + +18. Fix HADOOP-148. Maintain a task failure count for each + tasktracker and display it in the web ui. (omalley via cutting) + +19. Fix HADOOP-151. Close a potential socket leak, where new IPC + connection pools were created per configuration instance that RPCs + use. Now a global RPC connection pool is used again, as + originally intended. (cutting) + +20. Fix HADOOP-69. Don't throw a NullPointerException when getting + hints for non-existing file split. (Bryan Pendelton via cutting) + +21. Fix HADOOP-157. When a task that writes dfs files (e.g., a reduce + task) failed and was retried, it would fail again and again, + eventually failing the job. The problem was that dfs did not yet + know that the failed task had abandoned the files, and would not + yet let another task create files with the same names. Dfs now + retries when creating a file long enough for locks on abandoned + files to expire. (omalley via cutting) + +22. Fix HADOOP-150. Improved task names that include job + names. (omalley via cutting) + +23. Fix HADOOP-162. Fix ConcurrentModificationException when + releasing file locks. (omalley via cutting) + +24. Fix HADOOP-132. Initial check-in of new Metrics API, including + implementations for writing metric data to a file and for sending + it to Ganglia. (David Bowen via cutting) + +25. Fix HADOOP-160. Remove some uneeded synchronization around + time-consuming operations in the TaskTracker. (omalley via cutting) + +26. Fix HADOOP-166. RPCs failed when passed subclasses of a declared + parameter type. This is fixed by changing ObjectWritable to store + both the declared type and the instance type for Writables. Note + that this incompatibly changes the format of ObjectWritable and + will render unreadable any ObjectWritables stored in files. + Nutch only uses ObjectWritable in intermediate files, so this + should not be a problem for Nutch. (Stefan & cutting) + +27. Fix HADOOP-168. MapReduce RPC protocol methods should all declare + IOException, so that timeouts are handled appropriately. + (omalley via cutting) + +28. Fix HADOOP-169. Don't fail a reduce task if a call to the + jobtracker to locate map outputs fails. (omalley via cutting) + +29. Fix HADOOP-170. Permit FileSystem clients to examine and modify + the replication count of individual files. Also fix a few + replication-related bugs. (Konstantin Shvachko via cutting) + +30. Permit specification of a higher replication levels for job + submission files (job.xml and job.jar). This helps with large + clusters, since these files are read by every node. (cutting) + +31. HADOOP-173. Optimize allocation of tasks with local data. (cutting) + +32. HADOOP-167. Reduce number of Configurations and JobConf's + created. (omalley via cutting) + +33. NUTCH-256. Change FileSystem#createNewFile() to create a .crc + file. The lack of a .crc file was causing warnings. (cutting) + +34. HADOOP-174. Change JobClient to not abort job until it has failed + to contact the job tracker for five attempts, not just one as + before. (omalley via cutting) + +35. HADOOP-177. Change MapReduce web interface to page through tasks. + Previously, when jobs had more than a few thousand tasks they + could crash web browsers. (Mahadev Konar via cutting) + +36. HADOOP-178. In DFS, piggyback blockwork requests from datanodes + on heartbeat responses from namenode. This reduces the volume of + RPC traffic. Also move startup delay in blockwork from datanode + to namenode. This fixes a problem where restarting the namenode + triggered a lot of uneeded replication. (Hairong Kuang via cutting) + +37. HADOOP-183. If the DFS namenode is restarted with different + minimum and/or maximum replication counts, existing files' + replication counts are now automatically adjusted to be within the + newly configured bounds. (Hairong Kuang via cutting) + +38. HADOOP-186. Better error handling in TaskTracker's top-level + loop. Also improve calculation of time to send next heartbeat. + (omalley via cutting) + +39. HADOOP-187. Add two MapReduce examples/benchmarks. One creates + files containing random data. The second sorts the output of the + first. (omalley via cutting) + +40. HADOOP-185. Fix so that, when a task tracker times out making the + RPC asking for a new task to run, the job tracker does not think + that it is actually running the task returned. (omalley via cutting) + +41. HADOOP-190. If a child process hangs after it has reported + completion, its output should not be lost. (Stack via cutting) + +42. HADOOP-184. Re-structure some test code to better support testing + on a cluster. (Mahadev Konar via cutting) + +43. HADOOP-191 Add streaming package, Hadoop's first contrib module. + This permits folks to easily submit MapReduce jobs whose map and + reduce functions are implemented by shell commands. Use + 'bin/hadoop jar build/hadoop-streaming.jar' to get details. + (Michel Tourn via cutting) + +44. HADOOP-189. Fix MapReduce in standalone configuration to + correctly handle job jar files that contain a lib directory with + nested jar files. (cutting) + +45. HADOOP-65. Initial version of record I/O framework that enables + the specification of record types and generates marshalling code + in both Java and C++. Generated Java code implements + WritableComparable, but is not yet otherwise used by + Hadoop. (Milind Bhandarkar via cutting) + +46. HADOOP-193. Add a MapReduce-based FileSystem benchmark. + (Konstantin Shvachko via cutting) + +47. HADOOP-194. Add a MapReduce-based FileSystem checker. This reads + every block in every file in the filesystem. (Konstantin Shvachko + via cutting) + +48. HADOOP-182. Fix so that lost task trackers to not change the + status of reduce tasks or completed jobs. Also fixes the progress + meter so that failed tasks are subtracted. (omalley via cutting) + +49. HADOOP-96. Logging improvements. Log files are now separate from + standard output and standard error files. Logs are now rolled. + Logging of all DFS state changes can be enabled, to facilitate + debugging. (Hairong Kuang via cutting) + + +Release 0.1.1 - 2006-04-08 + + 1. Added CHANGES.txt, logging all significant changes to Hadoop. (cutting) + + 2. Fix MapReduceBase.close() to throw IOException, as declared in the + Closeable interface. This permits subclasses which override this + method to throw that exception. (cutting) + + 3. Fix HADOOP-117. Pathnames were mistakenly transposed in + JobConf.getLocalFile() causing many mapred temporary files to not + be removed. (Raghavendra Prabhu via cutting) + + 4. Fix HADOOP-116. Clean up job submission files when jobs complete. + (cutting) + + 5. Fix HADOOP-125. Fix handling of absolute paths on Windows (cutting) + +Release 0.1.0 - 2006-04-01 + + 1. The first release of Hadoop. + |