Hadoop Change Log Release 1.0.3 - 2012.05.07 NEW FEATURES IMPROVEMENTS MAPREDUCE-4017. Add jobname to jobsummary log (tgraves and Koji Noguchi via bobby) BUG FIXES 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-6941. Adds support for building Hadoop with IBM's JDK (Stephen Watt, Eli and ddas) HADOOP-8188. Fixes the build process to do with jsvc, with IBM's JDK as the underlying jdk. (ddas) HDFS-3127. Do not throw exceptions when FSImage.restoreStorageDirs() fails. (Brandon Li via szetszwo) MAPREDUCE-3377. Ensure OutputCommitter.checkOutputSpecs is called prior to copying job.xml. (Jane Chen via acmurthy) HADOOP-5528. Ensure BinaryPartitioner is present in mapred libs. (Klaas Bosteels via acmurthy) HADOOP-6963. In FileUtil.getDU(..), neither include the size of directories nor follow symbolic links. (Ravi Prakash via szetszwo) HADOOP-8251. Fix SecurityUtil.fetchServiceTicket after HADOOP-6941. (todd) HADOOP-8293. Fix the Makefile.am for the native library to include the JNI path. (omalley) MAPREDUCE-4154. streaming MR job succeeds even if the streaming command fails. (Devaraj Das via tgraves) HDFS-119. Fix a bug in logSync(), which causes NameNode block forever. (shv) HADOOP-8294. IPC Connection becomes unusable even if server address was temporarilly unresolvable. Backport of HADOOP-7428. (Kihwal Lee via mattf) HDFS-3310. Make sure that we abort when no edit log directories are left. (Colin Patrick McCabe via eli) MAPREDUCE-4207. Remove System.out.println() in FileInputFormat (Kihwal Lee via harsh) HDFS-3265. PowerPc Build error. (Kumar Ravi via mattf) HDFS-1041. DFSClient.getFileChecksum(..) should retry if connection to

the first datanode fails. (szetszwo) HADOOP-8338. Fix renew and cancel of RPC HDFS delegation tokens. (omalley) HADOOP-8346. Makes oid changes to make SPNEGO work. Was broken due to fixes introduced by the IBM JDK compatibility patch. (ddas) HADOOP-8352. Regenerate configure scripts for the c++ compilation. (omalley) HDFS-3061. Cached directory size in INodeDirectory can get permanently out of sync with computed size, causing quota issues; port of HDFS-1487. (Kihwal Lee via mattf) HADOOP-7381. FindBugs OutOfMemoryError. (Joep Rottinghuis via mattf) HADOOP-8151. Error handling in snappy decompressor throws invalid exceptions. (Matt Foley) HDFS-3374. hdfs' TestDelegationToken fails intermittently with a race condition. (Owen O'Malley via mattf) MAPREDUCE-3857. Grep example ignores mapred.job.queue.name. (Jonathan Eagles via mattf) MAPREDUCE-1238. mapred metrics shows negative count of waiting maps and reduces (tgraves via bobby) MAPREDUCE-4003. log.index (No such file or directory) AND Task process exit with nonzero status of 126. (Koji Noguchi via tgraves) MAPREDUCE-4012. Hadoop Job setup error leaves no useful info to users (when LinuxTaskController is used) (tgraves) HADOOP-8027. Visiting /jmx on the daemon web interfaces may print unnecessar y error in logs (Aaron Myers and Hitesh Shah) Release 1.0.2 - 2012.03.24 NEW FEATURES HADOOP-7206. Support Snappy compression. (Issei Yoshida and Alejandro Abdelnur via vinodkv). HDFS-2701. Cleanup FS* processIOError methods. (eli) HDFS-2978. The NameNode should expose name dir statuses via JMX. (atm) IMPROVEMENTS MAPREDUCE-3773. Add queue metrics with buckets for job run times. (omalley via acmurthy) HADOOP-1722. Allow hadoop streaming to handle non-utf8 byte array. (Klaas Bosteels and Matthias Lehmann via acmurthy) HADOOP-5450. Add support for application-specific typecodes to typed bytes. (Klaas Bosteels via acmurthy)

HADOOP-8090. rename hadoop 64 bit rpm/deb package name. (Giridharan Kesavan via mattf) BUG FIXES HADOOP-8050. Deadlock in metrics. (Kihwal Lee via mattf) MAPREDUCE-3824. Distributed caches are not removed properly. (Thomas Graves via mattf) MAPREDUCE-3583. Change pid to String and stime to BigInteger in order to avoid NumberFormatException caused by overflow. (Zhihong Yu via szetszwo) HDFS-3006. In WebHDFS, when the return body is empty, set the Content-Type to application/octet-stream instead of application/json. (szetszwo) MAPREDUCE-764. Fix TypedBytesInput.readRaw to preserve custom type codes. (Klaas Bosteels via acmurthy) HDFS-2703. removedStorageDirs is not updated everywhere we remove a storage dir. (eli) HDFS-2702. A single failed name dir can cause the NN to exit. (eli) HDFS-3075. Backport HADOOP-4885: Try to restore failed name-node storage directories at checkpoint time. (Brandon Li via szetszwo) HDFS-3101. Cannot read empty file using WebHDFS. (szetszwo) MAPREDUCE-3851. Allow more aggressive action on detection of the jetty issue (tgraves via bobby) HADOOP-8088. User-group mapping cache incorrectly does negative caching on transient failures (Kihwal Lee via bobby) HADOOP-8132. 64bit secure datanodes do not start as the jsvc path is wrong (Arpit Gupta via mattf) HADOOP-8201. create the configure script for native compilation as part of the build (Giri Kesavan via mattf) Release 1.0.1 - 2012.02.14 NEW FEATURES IMPROVEMENTS MAPREDUCE-3607. Port missing new API mapreduce lib classes to 1.x. (tomwhite) HADOOP-7987. Support setting the run-as user in unsecure mode. (jitendra) HADOOP-7988. Upper case in hostname part of the principals doesn't work with kerberos. (jitendra) HDFS-2814. NamenodeMXBean does not account for svn revision in the version information. (Hitesh Shah via jitendra) HADOOP-7470. Move up to Jackson 1.8.8. (Enis Soztutar via szetszwo)

HDFS-2379. Allow block reports to proceed without holding FSDataset lock. (todd via suresh) HADOOP-8009. Create hadoop-client and hadoop-minicluster artifacts for downstream projects. (Alejandro Abdelnur via mattf) MAPREDUCE-3184. Add a thread to the TaskTracker which monitors for spinning Jetty selector threads, and shuts down the daemon when one is detected. (todd) BUG FIXES HADOOP-7960. Port HADOOP-5203 to branch-1, build version comparison is too restrictive. (mattf) HADOOP-7964. Deadlock in NetUtils and SecurityUtil class initialization. (Daryn Sharp via suresh) HADOOP-8010. hadoop-config.sh errors when HADOOP_HOME_WARN_SUPPRESS is set to true and HADOOP_HOME is present. (Roman Shaposhnik via mattf) 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) MAPREDUCE-3343. TaskTracker Out of Memory because of distributed cache. (Zhao Yunjiong). HADOOP-8037. Binary tarball does not preserve platform info for native builds, and RPMs fail to provide needed symlinks for libhadoop.so. (Matt Foley) Release 1.0.0 - 2011.12.15 NEW FEATURES HDFS-2316. [umbrella] WebHDFS: a complete FileSystem implementation for accessing HDFS over HTTP (szetszwo) HDFS-2539. Support doAs and GETHOMEDIRECTORY in WebHDFS. (szetszwo) IMPROVEMENTS HDFS-2427. Change the default permission in WebHDFS to 755 and add range check/validation for all parameters. (szetszwo) HDFS-2501. Add version prefix and root methods to WebHDFS. (szetszwo) HADOOP-7728. Enable task memory management to be configurable in hadoop config setup script. (ramya) HDFS-2450. Filesystem supports path with both short names and FQDN. (Daryn Sharp via suresh) HDFS-617. Support for non-recursive create() in HDFS. (Kan Zhang via jitendra) HADOOP-6840. Support non-recursive create() in FileSystem & SequenceFile.Writer. (Nicolas Spiegelberg via jitendra)

HADOOP-6886. LocalFileSystem Needs createNonRecursive API. (Nicolas Spiegelberg via jitendra) HADOOP-5124. A few optimizations to FsNamesystem#RecentInvalidateSets. (Hairong Kuang via jitendra) HADOOP-7664. Remove warmings when overriding final parameter configuration if the override value is same as the final parameter value. (Ravi Prakash via szetszwo) HADOOP-7816. Allow HADOOP_HOME deprecated warning suppression based on config specified in hadoop-env.sh (Dave Thompson via suresh) MAPREDUCE-3169. Create a new MiniMRCluster equivalent which only provides client APIs cross MR1 and MR2. (Ahmed via tucu) HDFS-2552. Add Forrest doc for WebHDFS REST API. (szetszwo) HDFS-2246. Shortcut a local client reads to a Datanodes files directly. (Andrew Purtell, Suresh, Jitendra) HADOOP-7804. Enable hadoop config generator to set configurations to enable short circuit read. (Arpit Gupta via jitendra) HDFS-2604. Add a log message to show if WebHDFS is enabled and a configuration section in the forrest doc. (szetszwo) HADOOP-7923. Update doc versions from 0.20 to 1.0, and automate the updating of version numbers in the doc system. (szetszwo via mattf) BUG FIXES HDFS-2673. While Namenode processing the blocksBeingWrittenReport, it will log incorrect number blocks count. (Uma Maheswara via mattf) MAPREDUCE-3319. Hadoop example "multifilewc" broken in 0.20.205.0. (Subroto Sanyal via mattf) HDFS-2589. Remove unnecessary hftp token fetch and renewal thread. (Daryn Sharp via mattf) MAPREDUCE-3475. JT can't renew its own tokens. (Daryn Sharp via mattf) HADOOP-7869. HADOOP_HOME warning happens all of the time (Owen O'Malley via mattf) HADOOP-7815. Fixed configuring map memory mb in hadoop-setup-conf.sh. (Ramya Sunil) HDFS-2346. TestHost2NodesMap & TestReplicasMap will fail depending upon execution order of test methods. (Laxman and Uma Maheswara Rao via Matt Foley) MAPREDUCE-3374. src/c++/task-controller/configure is not set executable in the tarball and that prevents task-controller from rebuilding. (Roman Shaposhnik via Matt Foley) HDFS-1943. Fail to start datanode while start-dfs.sh is executed by root user. (Wei Yongjun's patch updated by Matt Foley)

HADOOP-7784. Fixed jsvc packaging. (Eric Yang) HADOOP-7740. Fixed security audit logger configuration. (Arpit Gupta via Eric Yang) HADOOP-7765. Clean packaging working directory for Debian packaging. (Eric Yang) HDFS-2441. Remove the Content-Type set by HttpServer.QuotingInputFilter in WebHDFS responses. (szetszwo) HDFS-2428. Convert com.sun.jersey.api.ParamException$QueryParamException to IllegalArgumentException and response it as http BAD_REQUEST in WebHDFS. (szetszwo) HDFS-2424. Added a root element "HdfsFileStatuses" for the response of WebHDFS listStatus. (szetszwo) HDFS-2439. Fix NullPointerException in WebHDFS when opening a non-existing file or creating a file without specifying the replication parameter. (szetszwo) HDFS-2453. Fix http response code for partial content in WebHDFS, added getDefaultBlockSize() and getDefaultReplication() in WebHdfsFileSystem and cleared content type in ExceptionHandler. (szetszwo) HDFS-2416. Distcp with a WebHDFS uri on a secure cluster fails. (jitendra) HDFS-2494. Close the streams and DFSClient in DatanodeWebHdfsMethods. (Uma Maheswara Rao G via szetszwo) HDFS-2432. WebHDFS: response FORBIDDEN when setReplication on non-files; clear umask before creating a flie; throw IllegalArgumentException if setOwner with both owner and group empty; throw FileNotFoundException if getFileStatus on non-existing files; fix bugs in getBlockLocations; and changed getFileChecksum json response root to "FileChecksum". (szetszwo) HDFS-2065. Add null checks in DFSClient.getFileChecksum(..). (Uma Maheswara Rao G via szetszwo) HDFS-2527. WebHDFS: remove the use of "Range" header in Open; use ugi username if renewer parameter is null in GetDelegationToken; response OK when setting replication for non-files; rename GETFILEBLOCKLOCATIONS to GET_BLOCK_LOCATIONS and state that it is a private unstable API; replace isDirectory and isSymlink with enum {FILE, DIRECTORY, SYMLINK} in HdfsFileStatus JSON object. (szetszwo) HDFS-2528. WebHDFS: set delegation kind to WEBHDFS and add a HDFS token when http requests are redirected to datanode. (szetszwo) HDFS-2540. WebHDFS: change "Expect: 100-continue" to two-step write; change "HdfsFileStatus" and "localName" respectively to "FileStatus" and "pathSuffix" in JSON response. (szetszwo) HDFS-1257. Race condition on FSNamesystem#recentInvalidateSets introduced by HADOOP-5124. (Eric Payne via jitendra) HDFS-611. Heartbeats times from Datanodes increase when there are plenty of blocks to delete. (Zheng Shao via jitendra)

HADOOP-7853. multiple javax security configurations cause conflicts. (Daryn via jitendra) HDFS-2590. Fix the missing links in the WebHDFS forrest doc. (szetszwo) HADOOP-7854. UGI getCurrentUser is not synchronized. (Daryn Sharp via jitendra) HADOOP-7865. Test Failures in 1.0 hdfs/common. (jitendra) MAPREDUCE-3480. Disable TestJvmReuse in branch-1. (jitendra) HADOOP-7855. fix to remove datanode dir creation and attribute setup from hadoop-conf-setup.sh (gkesavan) HADOOP-7461. Fix to add jackson dependency to hadoop pom. (gkesavan) Release 0.20.205.0 - 2011.10.06 NEW FEATURES HDFS-2202. Add a new DFSAdmin command to set balancer bandwidth of datanodes without restarting. (Eric Payne via szetszwo) HDFS-200. Support append and sync for hadoop 0.20 branch. (dhruba) HDFS-826. Allow a mechanism for an application to detect that datanode(s) have died in the write pipeline. (dhruba) HDFS-142. Blocks that are being written by a client are stored in the blocksBeingWritten directory. (Dhruba Borthakur, Nicolas Spiegelberg, Todd Lipcon via dhruba) HDFS-630. Client can exclude specific nodes in the write pipeline. (Nicolas Spiegelberg via dhruba) HDFS-895. Allow hflush/sync to occur in parallel with new writes to the file. (Todd Lipcon via hairong) HDFS-1520. Lightweight NameNode operation recoverLease to trigger lease recovery. (Hairong Kuang via dhruba) MAPREDUCE-2764. Allow JobTracker to renew and cancel arbitrary token types, including delegation tokens obtained via hftp. (omalley) HADOOP-7119 add Kerberos HTTP SPNEGO authentication support to Hadoop JT/NN/DN/TT web-consoles backport from Trunk (sanjay) HDFS-2284. Add a new FileSystem, webhdfs://, for supporting write Http access to HDFS. (szetszwo) HDFS-2317. Support read access to HDFS in WebHDFS. (szetszwo) HDFS-2338. Add configuration option to enable/disable WebHDFS. (jitendra via szetszwo) HDFS-2318. Provide authentication to WebHDFS using SPNEGO and delegation tokens. (szetszwo)

HDFS-2340. Support getFileBlockLocations and getDelegationToken in WebHDFS. (szetszwo) HDFS-2348. Support getContentSummary and getFileChecksum in WebHDFS. (szetszwo) HDFS-2385. Support renew and cancel delegation tokens in WebHDFS. (szetszwo) MAPREDUCE-2777. Backport of MAPREDUCE-220 and MAPREDUCE-2469. Includes adding cumulative CPU usage and total heap usage to task conters. (amarrk) BUG FIXES HDFS-2404. WebHDFS liststatus json response is not correct. (Suresh Srinivas via mattf) HDFS-2358. NPE when the default filesystem's uri has no authority. (Daryn Sharp via mattf) MAPREDUCE-3112. Calling hadoop cli inside mapreduce job leads to errors. (Eric Yang via mattf) HADOOP-7691. Hadoop deb pkg group id. (Eric Yang via mattf) HADOOP-7685. Resolve issues with hadoop-common file hadoop-setup-conf.sh. (Eric Yang and Devaraj K, via mattf) HADOOP-7684. jobhistory server and secondarynamenode should have init.d script for rpm and deb. (Eric Yang via mattf) HADOOP-7683. remove hdfs-site.xml template has properties that are not used in 0.20-security. (Arpit Gupta via mattf) HADOOP-7603. Set default hdfs, mapred uid, and hadoop group gid for RPM packages. (Eric Yang via mattf) HADOOP-7681. log4j.properties is missing properties for security audit and hdfs audit should be changed to info. (Arpit Gupta via mattf) HADOOP-7679. log4j.properties templates must define mapred.jobsummary.logger (Ramya Sunil via mattf) HDFS-2325. Fuse-DFS fails to build on Hadoop 20.203.0 (Kihwal Lee via mattf) HDFS-2342. add Jersey libraries to ivy.xml files in contrib, to fix TestSleepJob and TestHdfsProxy. (Tsz Wo (Nicholas), SZE via mattf) MAPREDUCE-2324. Removed usage of broken ResourceEstimator.getEstimatedReduceInputSize to check against usable disk-space on TaskTracker. (Robert Evans via acmurthy) MAPREDUCE-2729. Ensure jobs with reduces which can't be launched due to slow-start do not count for user-limits. (Sherry Chen via acmurthy) HADOOP-6833. IPC leaks call parameters when exceptions thrown. (Todd Lipcon via eli) HADOOP-7400. Fix HdfsProxyTests fails when the -Dtest.build.dir

and -Dbuild.test is set a dir other than build dir (gkesavan) MAPREDUCE-2650. back-port MAPREDUCE-2238 to 0.20-security. (Sherry Chen via mahadev) HDFS-2053. Bug in INodeDirectory#computeContentSummary warning (Michael Noll via eli) HDFS-2117. DiskChecker#mkdirsWithExistsAndPermissionCheck may return true even when the dir is not created. (eli) MAPREDUCE-2489. Jobsplits with random hostnames can make the queue unusable. (Jeffrey Naisbitt via mahadev) HDFS-2190. NN fails to start if it encounters an empty or malformed fstime file. (atm) HDFS-2259. DN web-UI doesn't work with paths that contain html. (eli) HDFS-561. Fix write pipeline READ_TIMEOUT. (Todd Lipcon via dhruba) HDFS-606. Fix ConcurrentModificationException in invalidateCorruptReplicas. (Todd Lipcon via dhruba) HDFS-1118. Fix socketleak on DFSClient. (Zheng Shao via dhruba) HDFS-988. Fix bug where savenameSpace can corrupt edits log. (Nicolas Spiegelberg via dhruba) HDFS-1054. remove sleep before retry for allocating a block. (Todd Lipcon via dhruba) HDFS-1207. FSNamesystem.stallReplicationWork should be volatile. (Todd Lipcon via dhruba) HDFS-1141. completeFile does not check lease ownership. (Todd Lipcon via dhruba) HDFS-1204. Lease expiration should recover single files, not entire lease holder (Sam Rash via dhruba) HDFS-1346. DFSClient receives out of order packet ack. (hairong) HDFS-1057. Concurrent readers hit ChecksumExceptions if following a writer to very end of file (Sam Rash via dhruba) HDFS-724. Use a bidirectional heartbeat to detect stuck pipeline. (hairong) HDFS-1555. Disallow pipelien recovery if a file is already being lease recovered. (hairong) HDFS-1554. New semantics for recoverLease. (hairong) HADOOP-7596. Makes packaging of 64-bit jsvc possible. Has other bug fixes to do with packaging. (Eric Yang via ddas) HDFS-2309. TestRenameWhileOpen fails. (jitendra)

HDFS-2300. TestFileAppend4 and TestMultiThreadedSync failure. (jitendra) HDFS-1122. client block verification may result in blocks in DataBlockScanner prematurely. (Sam Rash via jitendra) HADOOP-6722. NetUtils.connect should check that it hasn't connected a socket to itself. (Todd Lipcon via suresh) HDFS-1779. After NameNode restart , Clients can not read partial files even after client invokes Sync. (Uma Maheswara Rao G via jitendra) HDFS-1197. Blocks are considered "complete" prematurely after commitBlockSynchronization or DN restart. (Todd Lipcon via jitendra) HDFS-1218. Blocks recovered on startup should be treated with lower priority during block synchronization. (Todd Lipcon via suresh) HDFS-1186. DNs should interrupt writers at start of recovery. (Todd Lipcon via suresh) HDFS-1252. Fix TestDFSConcurrentFileOperations. (Todd Lipcon via suresh). HDFS-1260. Block lost when multiple DNs trying to recover it to different genstamps. (Todd Lipcon via jitendra) HADOOP-7626. Bugfix for a config generator (Eric Yang via ddas) MAPREDUCE-2549. Fix resource leaks in Eclipse plugin. (Devaraj K via acmurthy) HDFS-2328. HFTP throws NPE if security is enabled locally, but not remotely. (omalley) HADOOP-7602. wordcount, sort etc on har files fails with NPE. (John George via jitendra) HADOOP-7625. Fix TestDelegationToken by having DFSClient set the service correctly and having the test cases use the common jar. (omalley) HADOOP-7644. Fix TestDelegationTokenRenewal and TestDelegationTokenFetcher to use and test the new style renewers. (omalley) 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-7630. Fixes hadoop-metrics2.properties to have a property *.period set to a default value. (Eric Yang via ddas) HADOOP-7615. Fixes to have contrib jars in the HADOOP_CLASSPATH for the binary layout case. (Eric Yang via ddas) HADOOP-7661. FileSystem.getCanonicalServiceName throws NPE for any

file system uri that doesn't have an authority. (jitendra) HADOOP-7649. TestMapredGroupMappingServiceRefresh and TestRefreshUserMappings fail after HADOOP-7625. (jitendra) HADOOP-7658. Fix hadoop config template for secured and unsecured installation (Eric Yang via gkesavan) MAPREDUCE-3076. Annotate o.a.h.mapreduce.TestSleepJob with @Ignore since it is not a junit test. (acmurthy via szetszwo) HDFS-2331. Fix WebHdfsFileSystem compilation problems for a bug in JDK version < 1.6.0_26. (Abhijit Suresh Shingate via szetszwo) HADOOP-7645. HTTP auth tests requiring Kerberos infrastructure are not disabled on branch-0.20-security. (jitendra) HADOOP-7674. TestKerberosName fails in 20 branch. (jitendra) HDFS-2333. Change DFSOutputStream back to package private, otherwise, there are two SC_START_IN_CTOR findbugs warnings. (szetszwo) HADOOP-7676. Enable hbase to run as hdfs user (gkesavan) HDFS-2359. Fix NullPointerException in DataBlockScanner. (Jonthan Eagles via suresh) MAPREDUCE-3081. Fix for vaidya.sh to work with the new layout (Suhas via gkesavan) HDFS-2366. Initialize WebHdfsFileSystem.ugi in object construction. (szetszwo) HDFS-2361. hftp is broken. Fixed username checks in JspHelper. (jitendra) HDFS-2375. Fix TestFileAppend4 failure. (suresh) HDFS-2373. Commands using WebHDFS and hftp print unnecessary debug info on the console with security enabled. (Arpit Gupta via suresh) HADOOP-7610. Fix for hadoop debian package (Eric Yang via gkesavan) HADOOP-7715. Removed unnecessary security logger configuration. (Eric Yang) HADOOP-7711. Fixed recursive sourcing of HADOOP_OPTS environment variables (Arpit Gupta via Eric Yang) HDFS-2392. Dist with hftp is failing again. (Daryn Sharp via jitendra) HDFS-2408. DFSClient#getNumCurrentReplicas is package private in 205 but public in branch-0.20-append (stack via atm) HADOOP-7721. dfs.web.authentication.kerberos.principal expects the full hostname and does not replace _HOST with the hostname. (jitendra) HDFS-2403. NamenodeWebHdfsMethods.generateDelegationToken(..) does not use the renewer parameter. (szetszwo) HADOOP-7724. Fixed hadoop-setup-conf.sh to put proxy user in core-site.xml. (Arpit Gupta via Eric Yang)

HDFS-2411. With WebHDFS enabled in secure mode the auth to local mappings are not being respected. (jitendra) IMPROVEMENTS MAPREDUCE-2928. MR-2413 improvements (Eli Collins via mattf) HADOOP-7655. provide a small validation script that smoke tests the installed cluster. (Arpit Gupta via mattf) MAPREDUCE-2187. Reporter sends progress during sort/merge. (Anupam Seth via acmurthy) MAPREDUCE-2705. Implements launch of multiple tasks concurrently. (Thomas Graves via ddas) HADOOP-7343. Make the number of warnings accepted by test-patch configurable to limit false positives. (Thomas Graves via cdouglas) HDFS-1836. Thousand of CLOSE_WAIT socket. Contributed by Todd Lipcon, ported to security branch by Bharath Mundlapudi. (via mattf) HADOOP-7432. Back-port HADOOP-7110 to 0.20-security: Implement chmod in NativeIO library. (Sherry Chen via mattf) HADOOP-7314. Add support for throwing UnknownHostException when a host doesn't resolve. Needed for MAPREDUCE-2489. (Jeffrey Naisbitt via mattf) MAPREDUCE-2494. Make the distributed cache delete entires using LRU priority (Robert Joseph Evans via mahadev) HADOOP-6889. Make RPC to have an option to timeout - backport to 0.20-security. Unit tests updated to 17/Aug/2011 version. (John George and Ravi Prakash via mattf) MAPREDUCE-2780. Use a utility method to set service in token. (Daryn Sharp via jitendra) HADOOP-7472. RPC client should deal with IP address change. (Kihwal Lee via suresh) MAPREDUCE-2489. Jobsplits with random hostnames can make the queue unusable (Jeffrey Naisbit via mahadev) MAPREDUCE-2852. Jira for YDH bug 2854624. (Kihwal Lee via eli) HDFS-1210. DFSClient should log exception when block recovery fails. (Todd Lipcon via dhruba) HDFS-1211. Block receiver should not log "rewind" packets at INFO level. (Todd Lipcon) HDFS-1164. TestHdfsProxy is failing. (Todd Lipcon) HDFS-1202. DataBlockScanner throws NPE when updated before initialized. (Todd Lipcon) HADOOP-7539. merge hadoop archive goodness from trunk to .20 (John George via mahadev)

HADOOP-7594. Support HTTP REST in HttpServer. (szetszwo) HDFS-1242. Add test for appendFile() race solved in HDFS-142. (Todd Lipcon via jitendra) HDFS-2320. Make 0.20-append protocol changes compatible with 0.20-secuirty. (suresh) MAPREDUCE-2610. Make QueueAclsInfo public. (Joep Rottinghuis via acmurthy) MAPREDUCE-2915. Ensure LTC passes java.library.path. (Kihwal Lee via acmurthy) HADOOP-7599. Script improvements to setup a secure Hadoop cluster (Eric Yang via ddas) MAPREDUCE-2981. Backport FairScheduler from trunk. (Matei Zaharia via acmurthy) MAPREDUCE-1734. Undeprecate old API in branch-0.20-security. (Todd Lipcon via acmurthy) HDFS-2356. Support case insensitive query parameter names in WebHDFS. (szetszwo) HADOOP-7510. Add configurable option to use original hostname in token instead of IP to allow server IP change. (Daryn Sharp via suresh) HDFS-2368. Move SPNEGO conf properties from hdfs-default.xml to hdfs-site.xml. (szetszwo) HADOOP-7710. Added hadoop-setup-application.sh for creating application directory (Arpit Gupta via Eric Yang) HADOOP-7708. Fixed hadoop-setup-conf.sh to handle config file consistently. (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) HDFS-2395. Add a root element in the JSON responses of WebHDFS. (szetszwo) Release 0.20.204.0 - 2011-8-25 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) HADOOP-7324. Ganglia plugins for metrics v2. (Priyo Mustafi via llu) BUG FIXES

MAPREDUCE-2804. Fixed a race condition in setting up the log directories for tasks that are starting at the same time. (omalley) MAPREDUCE-2846. Fixed a race condition in writing the log index file that caused tasks to fail. (omalley) MAPREDUCE-2651. Fix race condition in Linux task controller for job log directory creation. (Bharath Mundlapudi via llu) MAPREDUCE-2621. TestCapacityScheduler fails with "Queue "q1" does not exist". (Sherry Chen via mahadev) HADOOP-7475. Fix hadoop-setup-single-node.sh to reflect new layout. (eyang via omalley) HADOOP-7045. TestDU fails on systems with local file systems with extended attributes. (eli) MAPREDUCE-2495. exit() the TaskTracker when the distributed cache cleanup thread dies. (Robert Joseph Evans via cdouglas) HDFS-1878. TestHDFSServerPorts unit test failure - race condition in FSNamesystem.close() causes NullPointerException without serious consequence. (mattf) MAPREDUCE-2452. Moves the cancellation of delegation tokens to a separate thread. (ddas) MAPREDUCE-2555. Avoid sprious logging from completedtasks. (Thomas Graves via cdouglas) MAPREDUCE-2451. Log the details from health check script at the JobTracker. (Thomas Graves via cdouglas) MAPREDUCE-2535. Fix NPE in JobClient caused by retirement. (Robert Joseph Evans via cdouglas) MAPREDUCE-2456. Log the reduce taskID and associated TaskTrackers with failed fetch notifications in the JobTracker log. (Jeffrey Naisbitt via cdouglas) HDFS-2044. TestQueueProcessingStatistics failing automatic test due to timing issues. (mattf) HADOOP-7248. Update eclipse target to generate .classpath from ivy config. (Thomas Graves and Tom White via cdouglas) MAPREDUCE-2558. Add queue-level metrics 0.20-security branch (test fixes) (Jeffrey Naisbitt via mahadev) HADOOP-7364. TestMiniMRDFSCaching fails if test.build.dir is set to something other than build/test. (Thomas Graves via mahadev) HADOOP-7277. Add generation of run configurations to eclipse target. (Jeffrey Naisbitt and Philip Zeyliger via cdouglas) HADOOP-7373. Fix {start,stop}-{dfs,mapred} and hadoop-daemons.sh from trying to use the wrong bin directory. (omalley) HADOOP-7274. Fix typos in IOUtils. (Jonathan Eagles via cdouglas)

HADOOP-7369. Fix permissions in tarball for sbin/* and libexec/* (omalley) MAPREDUCE-2479. Move distributed cache cleanup to a background task, backporting MAPREDUCE-1568. (Robert Joseph Evans via cdouglas) HADOOP-7356. Fix bin/hadoop scripts (eyang via omalley) HADOOP-7272. Remove unnecessary security related info logs. (suresh) MAPREDUCE-2514. Fix typo in TaskTracker ReinitTrackerAction log message. (Jonathan Eagles via cdouglas) HDFS-1906. Remove logging exception stack trace in client logs when one of the datanode targets to read from is not reachable. (suresh) MAPREDUCE-2490. Add logging to graylist and blacklist activity to aid diagnosis of related issues. (Jonathan Eagles via cdouglas) MAPREDUCE-2447. Fix Child.java to set Task.jvmContext sooner to avoid corner cases in error handling. (Siddharth Seth via acmurthy) MAPREDUCE-2429. Validate JVM in TaskUmbilicalProtocol. (Siddharth Seth via acmurthy) MAPREDUCE-2418. Show job errors in JobHistory page. (Siddharth Seth via acmurthy) HDFS-1592. At Startup, Valid volumes required in FSDataset doesn't handle consistently with volumes tolerated. (Bharath Mundlapudi) HDFS-1598. Directory listing on hftp:// does not show .*.crc files. (szetszwo) HDFS-1750. ListPathsServlet should not use HdfsFileStatus.getLocalName() to get file name since it may return an empty string. (szetszwo) HDFS-1758. Make Web UI JSP pages thread safe. (Tanping via suresh) HDFS-1773. Do not show decommissioned datanodes, which are not in both include and exclude lists, on web and JMX interfaces. (Tanping Wang via szetszwo) MAPREDUCE-2409. Distinguish distributed cache artifacts localized as files, archives. (Siddharth Seth via cdouglas) MAPREDUCE-118. Fix Job.getJobID() to get the new ID as soon as it's assigned. (Amareshwari Sriramadasu and Dick King via cdouglas) MAPREDUCE-2411. Force an exception when the queue has an invalid name or its ACLs are misconfigured. (Dick King via cdouglas) HDFS-1258. Clearing namespace quota on "/" corrupts fs image. (Aaron T. Myers via szetszwo) HDFS-1189. Quota counts missed between clear quota and set quota. (John George via szetszwo) HDFS-1692. In secure mode, Datanode process doesn't exit when disks fail. (bharathm via boryas)

MAPREDUCE-2420. JobTracker should be able to renew delegation token over HTTP (boryas) MAPREDUCE-2443. Fix TaskAspect for TaskUmbilicalProtocol.ping(..). (Siddharth Seth via szetszwo) HDFS-1842. Handle editlog opcode conflict with 0.20.203 during upgrade, by throwing an error to indicate the editlog needs to be empty. (suresh) HDFS-1377. Quota bug for partial blocks allows quotas to be violated. (eli) HDFS-2057. Wait time to terminate the threads causes unit tests to take longer time. (Bharath Mundlapudi via suresh) HDFS-2218. Disable TestHdfsProxy.testHdfsProxyInterface in automated test suite for 0.20-security-204 release. (Matt Foley) IMPROVEMENTS HADOOP-7144. Expose JMX metrics via JSON servlet. (Robert Joseph Evans via cdouglas) MAPREDUCE-2524. Port reduce failure reporting semantics from trunk, to fail faulty maps more aggressively. (Thomas Graves via cdouglas) MAPREDUCE-2529. Add support for regex-based shuffle metric counting exceptions. (Thomas Graves via cdouglas) HADOOP-7398. Add mechanism to suppress warnings about use of HADOOP_HOME. (omalley) HDFS-2023. Backport of NPE for File.list and File.listFiles. Merged ports of HADOOP-7322, HDFS-1934, HADOOP-7342, and HDFS-2019. (Bharath Mundlapudi via mattf) MAPREDUCE-2415. Distribute the user task logs on to multiple disks. (Bharath Mundlapudi via omalley) MAPREDUCE-2413. TaskTracker should handle disk failures by reinitializing itself. (Ravi Gummadi and Jagane Sundar via omalley) HDFS-1541. Not marking datanodes dead when namenode in safemode. (hairong) HDFS-1767. Namenode ignores non-initial block report from datanodes when in safemode during startup. (Matt Foley via suresh) MAPREDUCE-1251. c++ utils doesn't compile. (Eli Collins via shv) HADOOP-7459. Remove jdk-1.6.0 dependency check from rpm. (omalley) HADOOP-7330. Fix MetricsSourceAdapter to use the value instead of the object. (Luke Lu via omalley) Release 0.20.203.0 - 2011-5-11 MAPREDUCE-1280. Update Eclipse plugin to the new eclipse.jdt API. (Alex Kozlov via szetszwo)

HADOOP-7259. Contrib modules should include the build.properties from the enclosing hadoop directory. (omalley) HADOOP-7253. Update the default configuration to fix security audit log and metrics2 property configuration warnings. (omalley) HADOOP-7247. Update documentation to match current jar names. (omalley) HADOOP-7246. Update the log4j configuration to match the EventCounter package. (Luke Lu via omalley) HADOOP-7143. Restore HadoopArchives. (Joep Rottinghuis via omalley) MAPREDUCE-2316. Updated CapacityScheduler documentation. (acmurthy) HADOOP-7243. Fix contrib unit tests missing dependencies. (omalley) HADOOP-7190. Add metrics v1 back for backwards compatibility. (omalley) MAPREDUCE-2360. Remove stripping of scheme, authority from submit dir in support of viewfs. (cdouglas) MAPREDUCE-2359 Use correct file system to access distributed cache objects. (Krishna Ramachandran) MAPREDUCE-2361. "Fix Distributed Cache is not adding files to class paths correctly" - Drop the host/scheme/fragment from URI (cdouglas) MAPREDUCE-2362. Fix unit-test failures: TestBadRecords (NPE due to rearranged MapTask code) and TestTaskTrackerMemoryManager (need hostname in output-string pattern). (Greg Roelofs, Krishna Ramachandran) HDFS-1729. Add statistics logging for better visibility into startup time costs. (Matt Foley) MAPREDUCE-2363. When a queue is built without any access rights we explain the problem. (Richard King) MAPREDUCE-1563. TaskDiagnosticInfo may be missed sometime. (Krishna Ramachandran) MAPREDUCE-2364. Don't hold the rjob lock while localizing resources. (ddas via omalley) MAPREDUCE-2365. New counters for FileInputFormat (BYTES_READ) and FileOutputFormat (BYTES_WRITTEN). New counter MAP_OUTPUT_MATERIALIZED_BYTES for compressed MapOutputSize. (Siddharth Seth) HADOOP-7040. Change DiskErrorException to IOException (boryas) HADOOP-7104. Remove unnecessary DNS reverse lookups from RPC layer (kzhang) MAPREDUCE-2366. Fix a problem where the task browser UI can't retrieve the stdxxx printouts of streaming jobs that abend in the unix code, in the common case where the containing job doesn't reuse JVM's. (Richard King)

HADOOP-6977. Herriot daemon clients should vend statistics (cos) HADOOP-6971. Clover build doesn't generate per-test coverage (cos) HADOOP-6879. Provide SSH based (Jsch) remote execution API for system tests. (cos) HADOOP-7215. RPC clients must use network interface corresponding to the host in the client's kerberos principal key. (suresh) HADOOP-7232. Fix Javadoc warnings. (omalley) HADOOP-7258. The Gzip codec should not return null decompressors. (omalley) Release 0.20.202.0 - unreleased MAPREDUCE-2355. Add a configuration knob mapreduce.tasktracker.outofband.heartbeat.damper that limits out of band heartbeats (acmurthy) MAPREDUCE-2356. Fix a race-condition that corrupted a task's state on the JobTracker. (Luke Lu) MAPREDUCE-2357. Always propagate IOExceptions that are thrown by non-FileInputFormat. (Luke Lu) HADOOP-7163. RPC handles SocketTimeOutException during SASL negotiation. (ddas) MAPREDUCE-2358. MapReduce assumes the default FileSystem is HDFS. (Krishna Ramachandran) MAPREDUCE-1904. Reducing locking contention in TaskTracker's MapOutputServlet LocalDirAllocator. (Rajesh Balamohan via acmurthy) HDFS-1626. Make BLOCK_INVALIDATE_LIMIT configurable. (szetszwo) HDFS-1584. Adds a check for whether relogin is needed to getDelegationToken in HftpFileSystem. (Kan Zhang via ddas) HADOOP-7115. Reduces the number of calls to getpwuid_r and getpwgid_r, by implementing a cache in NativeIO. (ddas) HADOOP-6882. An XSS security exploit in jetty-6.1.14. jetty upgraded to 6.1.26. (ddas) MAPREDUCE-2278. Fixes a memory leak in the TaskTracker. (cdouglas) HDFS-1353 redux. Modulate original 1353 to not bump RPC version. (jhoman) MAPREDUCE-2082 Race condition in writing the jobtoken password file when launching pipes jobs (jitendra and ddas) HADOOP-6978. Fixes task log servlet vulnerabilities via symlinks. (Todd Lipcon and Devaraj Das) MAPREDUCE-2178. Write task initialization to avoid race conditions leading to privilege escalation and resource leakage by

performing more actiions as the user. (Owen O'Malley, Devaraj Das, Chris Douglas via cdouglas) HDFS-1364. HFTP client should support relogin from keytab HADOOP-6907. Make RPC client to use per-proxy configuration. (Kan Zhang via ddas) MAPREDUCE-2055. Fix JobTracker to decouple job retirement from copy of job-history file to HDFS and enhance RetiredJobInfo to carry aggregated job-counters to prevent a disk roundtrip on job-completion to fetch counters for the JobClient. (Krishna Ramachandran via acmurthy) HDFS-1353. Remove most of getBlockLocation optimization (jghoman) MAPREDUCE-2023. TestDFSIO read test may not read specified bytes. (htang) HDFS-1340. A null delegation token is appended to the url if security is disabled when browsing filesystem.(boryas) HDFS-1352. Fix jsvc.location. (jghoman) HADOOP-6860. 'compile-fault-inject' should never be called directly. (cos) MAPREDUCE-2005. TestDelegationTokenRenewal fails (boryas) MAPREDUCE-2000. Rumen is not able to extract counters for Job history logs from Hadoop 0.20. (htang) MAPREDUCE-1961. ConcurrentModificationException when shutting down Gridmix. (htang) HADOOP-6899. RawLocalFileSystem set working directory does not work for relative names. (suresh) HDFS-495. New clients should be able to take over files lease if the old client died. (shv) HADOOP-6728. Re-design and overhaul of the Metrics framework. (Luke Lu via acmurthy) MAPREDUCE-1966. Change blacklisting of tasktrackers on task failures to be a simple graylist to fingerpoint bad tasktrackers. (Greg Roelofs via acmurthy) HADOOP-6864. Add ability to get netgroups (as returned by getent netgroup command) using native code (JNI) instead of forking. (Erik Steffl) HDFS-1318. HDFS Namenode and Datanode WebUI information needs to be accessible programmatically for scripts. (Tanping Wang via suresh) HDFS-1315. Add fsck event to audit log and remove other audit log events corresponding to FSCK listStatus and open calls. (suresh) MAPREDUCE-1941. Provides access to JobHistory file (raw) with job user/acl permission. (Srikanth Sundarrajan via ddas) MAPREDUCE-291. Optionally a separate daemon should serve JobHistory. (Srikanth Sundarrajan via ddas)

MAPREDUCE-1936. Make Gridmix3 more customizable (sync changes from trunk). (htang) HADOOP-5981. Fix variable substitution during parsing of child environment variables. (Krishna Ramachandran via acmurthy) MAPREDUCE-339. Greedily schedule failed tasks to cause early job failure. (cdouglas) MAPREDUCE-1872. Hardened CapacityScheduler to have comprehensive, coherent limits on tasks/jobs for jobs/users/queues. Also, added the ability to refresh queue definitions without the need to restart the JobTracker. (acmurthy) HDFS-1161. Make DN minimum valid volumes configurable. (shv) HDFS-457. Reintroduce volume failure tolerance for DataNodes. (shv) HDFS-1307 Add start time, end time and total time taken for FSCK to FSCK report. (suresh) MAPREDUCE-1207. Sanitize user environment of map/reduce tasks and allow admins to set environment and java options. (Krishna Ramachandran via acmurthy) HDFS-1298 - Add support in HDFS for new statistics added in FileSystem to track the file system operations (suresh) HDFS-1301. TestHDFSProxy need to use server side conf for ProxyUser stuff.(boryas) HADOOP-6859 - Introduce additional statistics to FileSystem to track file system operations (suresh) HADOOP-6818. Provides a JNI implementation of Unix Group resolution. The config hadoop.security.group.mapping should be set to org.apache.hadoop.security.JniBasedUnixGroupsMapping to enable this implementation. (ddas) MAPREDUCE-1938. Introduces a configuration for putting user classes before the system classes during job submission and in task launches. Two things need to be done in order to use this feature (1) mapreduce.user.classpath.first : this should be set to true in the jobconf, and, (2) HADOOP_USER_CLASSPATH_FIRST : this is relevant for job submissions done using bin/hadoop shell script. HADOOP_USER_CLASSPATH_FIRST should be defined in the environment with some non-empty value (like "true"), and then bin/hadoop should be executed. (ddas) HADOOP-6669. Respect compression configuration when creating DefaultCodec compressors. (Koji Noguchi via cdouglas) HADOOP-6855. Add support for netgroups, as returned by command getent netgroup. (Erik Steffl) HDFS-599. Allow NameNode to have a seprate port for service requests from client requests. (Dmytro Molkov via hairong) HDFS-132. Fix namenode to not report files deleted metrics for deletions done while replaying edits during startup. (shv)

MAPREDUCE-1521. Protection against incorrectly configured reduces (mahadev) MAPREDUCE-1936. Make Gridmix3 more customizable. (htang) MAPREDUCE-517. Enhance the CapacityScheduler to assign multiple tasks per-heartbeat. (acmurthy) MAPREDUCE-323. Re-factor layout of JobHistory files on HDFS to improve operability. (Dick King via acmurthy) MAPREDUCE-1921. Ensure exceptions during reading of input data in map tasks are augmented by information about actual input file which caused the exception. (Krishna Ramachandran via acmurthy) MAPREDUCE-1118. Enhance the JobTracker web-ui to ensure tabular columns are sortable, also added a /scheduler servlet to CapacityScheduler for enhanced UI for queue information. (Krishna Ramachandran via acmurthy) HADOOP-5913. Add support for starting/stopping queues. (cdouglas) HADOOP-6835. Add decode support for concatenated gzip files. (Greg Roelofs) HDFS-1158. Revert HDFS-457. (shv) MAPREDUCE-1699. Ensure JobHistory isn't disabled for any reason. (Krishna Ramachandran via acmurthy) MAPREDUCE-1682. Fix speculative execution to ensure tasks are not scheduled after job failure. (acmurthy) MAPREDUCE-1914. Ensure unique sub-directories for artifacts in the DistributedCache are cleaned up. (Dick King via acmurthy) HADOOP-6713. Multiple RPC Reader Threads (Bharathm) HDFS-1250. Namenode should reject block reports and block received requests from dead datanodes (suresh) MAPREDUCE-1863. [Rumen] Null failedMapAttemptCDFs in job traces generated by Rumen. (htang) MAPREDUCE-1309. Rumen refactory. (htang) HDFS-1114. Implement LightWeightGSet for BlocksMap in order to reduce NameNode memory footprint. (szetszwo) MAPREDUCE-572. Fixes DistributedCache.checkURIs to throw error if link is missing for uri in cache archives. (amareshwari) MAPREDUCE-787. Fix JobSubmitter to honor user given symlink in the path. (amareshwari) HADOOP-6815. refreshSuperUserGroupsConfiguration should use server side configuration for the refresh( boryas) MAPREDUCE-1868. Add a read and connection timeout to JobClient while pulling tasklogs. (Krishna Ramachandran via acmurthy) HDFS-1119. Introduce a GSet interface to BlocksMap. (szetszwo)

MAPREDUCE-1778. Ensure failure to setup CompletedJobStatusStore is not silently ignored by the JobTracker. (Krishna Ramachandran via acmurthy) MAPREDUCE-1538. Add a limit on the number of artifacts in the DistributedCache to ensure we cleanup aggressively. (Dick King via acmurthy) MAPREDUCE-1850. Add information about the host from which a job is submitted. (Krishna Ramachandran via acmurthy) HDFS-1110. Reuses objects for commonly used file names in namenode to reduce the heap usage. (suresh) HADOOP-6810. Extract a subset of tests for smoke (DOA) validation. (cos) HADOOP-6642. Remove debug stmt left from original patch. (cdouglas) HADOOP-6808. Add comments on how to setup File/Ganglia Context for kerberos metrics (Erik Steffl) HDFS-1061. INodeFile memory optimization. (bharathm) HDFS-1109. HFTP supports filenames that contains the character "+". (Dmytro Molkov via dhruba, backported by szetszwo) HDFS-1085. Check file length and bytes read when reading a file through hftp in order to detect failure. (szetszwo) HDFS-1311. Running tests with 'testcase' cause triple execution of the same test case (cos) HDFS-1150.FIX. Verify datanodes' identities to clients in secure clusters. Update to patch to improve handling of jsvc source in build.xml (jghoman) HADOOP-6752. Remote cluster control functionality needs JavaDocs improvement. (Balaji Rajagopalan via cos) MAPREDUCE-1288. Fixes TrackerDistributedCacheManager to take into account the owner of the localized file in the mapping from cache URIs to CacheStatus objects. (ddas) MAPREDUCE-1682. Fix speculative execution to ensure tasks are not scheduled after job failure. (acmurthy) MAPREDUCE-1914. Ensure unique sub-directories for artifacts in the DistributedCache are cleaned up. (Dick King via acmurthy) MAPREDUCE-1538. Add a limit on the number of artifacts in the DistributedCache to ensure we cleanup aggressively. (Dick King via acmurthy) MAPREDUCE-1900. Fixes a FS leak that i missed in the earlier patch. (ddas) MAPREDUCE-1900. Makes JobTracker/TaskTracker close filesystems, created on behalf of users, when they are no longer needed. (ddas) HADOOP-6832. Add a static user plugin for web auth for external users. (omalley)

HDFS-1007. Fixes a bug in SecurityUtil.buildDTServiceName to do with handling of null hostname. (omalley) HDFS-1007. makes long running servers using hftp work. Also has some refactoring in the MR code to do with handling of delegation tokens. (omalley & ddas) HDFS-1178. The NameNode servlets should not use RPC to connect to the NameNode. (omalley) MAPREDUCE-1807. Re-factor TestQueueManager. (Richard King via acmurthy) HDFS-1150. Fixes the earlier patch to do logging in the right directory and also adds facility for monitoring processes (via -Dprocname in the command line). (Jakob Homan via ddas) HADOOP-6781. security audit log shouldn't have exception in it. (boryas) HADOOP-6776. Fixes the javadoc in UGI.createProxyUser. (ddas) HDFS-1150. building jsvc from source tar. source tar is also checked in. (jitendra) HDFS-1150. Bugfix in the hadoop shell script. (ddas) HDFS-1153. The navigation to /dfsnodelist.jsp with invalid input parameters produces NPE and HTTP 500 error (rphulari) MAPREDUCE-1664. Bugfix to enable queue administrators of a queue to view job details of jobs submitted to that queue even though they are not part of acl-view-job. HDFS-1150. Bugfix to add more knobs to secure datanode starter. HDFS-1157. Modifications introduced by HDFS-1150 are breaking aspect's bindings (cos) HDFS-1130. Adds a configuration dfs.cluster.administrators for controlling access to the default servlets in hdfs. (ddas) HADOOP-6706.FIX. Relogin behavior for RPC clients could be improved (boryas) HDFS-1150. Verify datanodes' identities to clients in secure clusters. (jghoman) MAPREDUCE-1442. Fixed regex in job-history related to parsing Counter values. (Luke Lu via acmurthy) HADOOP-6760. WebServer shouldn't increase port number in case of negative port setting caused by Jetty's race. (cos) HDFS-1146. Javadoc for getDelegationTokenSecretManager in FSNamesystem. (jitendra) HADOOP-6706. Fix on top of the earlier patch. Closes the connection on a SASL connection failure, and retries again with a new connection. (ddas)

MAPREDUCE-1716. Fix on top of earlier patch for logs truncation a.k.a MAPREDUCE-1100. Addresses log truncation issues when binary data is written to log files and adds a header to a truncated log file to inform users of the done trucation. HDFS-1383. Improve the error messages when using hftp://. MAPREDUCE-1744. Fixed DistributedCache apis to take a user-supplied FileSystem to allow for better proxy behaviour for Oozie. (Richard King) MAPREDUCE-1733. Authentication between pipes processes and java counterparts. (jitendra) MAPREDUCE-1664. Bugfix on top of the previous patch. (ddas) HDFS-1136. FileChecksumServlets.RedirectServlet doesn't carry forward the delegation token (boryas) HADOOP-6756. Change value of FS_DEFAULT_NAME_KEY from fs.defaultFS to fs.default.name which is a correct name for 0.20 (steffl) HADOOP-6756. Document (javadoc comments) and cleanup configuration keys in CommonConfigurationKeys.java (steffl) MAPREDUCE-1759. Exception message for unauthorized user doing killJob, killTask, setJobPriority needs to be improved. (gravi via vinodkv) HADOOP-6715. AccessControlList.toString() returns empty string when we set acl to "*". (gravi via vinodkv) HADOOP-6757. NullPointerException for hadoop clients launched from streaming tasks. (amarrk via vinodkv) HADOOP-6631. FileUtil.fullyDelete() should continue to delete other files despite failure at any level. (vinodkv) MAPREDUCE-1317. NPE in setHostName in Rumen. (rksingh) MAPREDUCE-1754. Replace mapred.persmissions.supergroup with an acl : mapreduce.cluster.administrators and HADOOP-6748.: Remove hadoop.cluster.administrators. Contributed by Amareshwari Sriramadasu. HADOOP-6701. Incorrect exit codes for "dfs -chown", "dfs -chgrp" (rphulari) HADOOP-6640. FileSystem.get() does RPC retires within a static synchronized block. (hairong) HDFS-1006. Removes unnecessary logins from the previous patch. (ddas) HADOOP-6745. adding some java doc to Server.RpcMetrics, UGI (boryas) MAPREDUCE-1707. TaskRunner can get NPE in getting ugi from TaskTracker. (vinodkv) HDFS-1104. Fsck triggers full GC on NameNode. (hairong) HADOOP-6332. Large-scale Automated Test Framework (sharad, Sreekanth Ramakrishnan, at all via cos)

HADOOP-6526. Additional fix for test context on top of existing one. (cos) HADOOP-6710. Symbolic umask for file creation is not conformant with posix. (suresh) HADOOP-6693. Added metrics to track kerberos login success and failure. (suresh) MAPREDUCE-1711. Gridmix should provide an option to submit jobs to the same queues as specified in the trace. (rksing via htang) MAPREDUCE-1687. Stress submission policy does not always stress the cluster. (htang) MAPREDUCE-1641. Bug-fix to ensure command line options such as -files/-archives are checked for duplicate artifacts in the DistributedCache. (Amareshwari Sreeramadasu via acmurthy) MAPREDUCE-1641. Fix DistributedCache to ensure same files cannot be put in both the archives and files sections. (Richard King via acmurthy) HADOOP-6670. Fixes a testcase issue introduced by the earlier commit of the HADOOP-6670 patch. (ddas) MAPREDUCE-1718. Fixes a problem to do with correctly constructing service name for the delegation token lookup in HftpFileSystem (borya via ddas) HADOOP-6674. Fixes the earlier patch to handle pings correctly (ddas). MAPREDUCE-1664. Job Acls affect when Queue Acls are set. (Ravi Gummadi via vinodkv) HADOOP-6718. Fixes a problem to do with clients not closing RPC connections on a SASL failure. (ddas) MAPREDUCE-1397. NullPointerException observed during task failures. (Amareshwari Sriramadasu via vinodkv) HADOOP-6670. Use the UserGroupInformation's Subject as the criteria for equals and hashCode. (omalley) HADOOP-6716. System won't start in non-secure mode when kerb5.conf (edu.mit.kerberos on Mac) is not present. (boryas) MAPREDUCE-1607. Task controller may not set permissions for a task cleanup attempt's log directory. (Amareshwari Sreeramadasu via vinodkv) MAPREDUCE-1533. JobTracker performance enhancements. (Amar Kamat via vinodkv) MAPREDUCE-1701. AccessControlException while renewing a delegation token in not correctly handled in the JobTracker. (boryas) HDFS-481. Incremental patch to fix broken unit test in contrib/hdfsproxy HADOOP-6706. Fixes a bug in the earlier version of the same patch (ddas) HDFS-1096. allow dfsadmin/mradmin refresh of superuser proxy group

mappings(boryas). HDFS-1012. Support for cluster specific path entries in ldap for hdfsproxy (Srikanth Sundarrajan via Nicholas) HDFS-1011. Improve Logging in HDFSProxy to include cluster name associated with the request (Srikanth Sundarrajan via Nicholas) HDFS-1010. Retrieve group information from UnixUserGroupInformation instead of LdapEntry (Srikanth Sundarrajan via Nicholas) HDFS-481. Bug fix - hdfsproxy: Stack overflow + Race conditions (Srikanth Sundarrajan via Nicholas) MAPREDUCE-1657. After task logs directory is deleted, tasklog servlet displays wrong error message about job ACLs. (Ravi Gummadi via vinodkv) MAPREDUCE-1692. Remove TestStreamedMerge from the streaming tests. (Amareshwari Sriramadasu and Sreekanth Ramakrishnan via vinodkv) HDFS-1081. Performance regression in DistributedFileSystem::getFileBlockLocations in secure systems (jhoman) MAPREDUCE-1656. JobStory should provide queue info. (htang) MAPREDUCE-1317. Reducing memory consumption of rumen objects. (htang) MAPREDUCE-1317. Reverting the patch since it caused build failures. (htang) MAPREDUCE-1683. Fixed jobtracker web-ui to correctly display heap-usage. (acmurthy) HADOOP-6706. Fixes exception handling for saslConnect. The ideal solution is to the Refreshable interface but as Owen noted in HADOOP-6656, it doesn't seem to work as expected. (ddas) MAPREDUCE-1617. TestBadRecords failed once in our test runs. (Amar Kamat via vinodkv). MAPREDUCE-587. Stream test TestStreamingExitStatus fails with Out of Memory. (Amar Kamat via vinodkv). HDFS-1096. Reverting the patch since it caused build failures. (ddas) MAPREDUCE-1317. Reducing memory consumption of rumen objects. (htang) MAPREDUCE-1680. Add a metric to track number of heartbeats processed by the JobTracker. (Richard King via acmurthy) MAPREDUCE-1683. Removes JNI calls to get jvm current/max heap usage in ClusterStatus by default. (acmurthy) HADOOP-6687. user object in the subject in UGI should be reused in case of a relogin. (jitendra) HADOOP-5647. TestJobHistory fails if /tmp/_logs is not writable to. Testcase should not depend on /tmp. (Ravi Gummadi via vinodkv) MAPREDUCE-181. Bug fix for Secure job submission. (Ravi Gummadi via vinodkv)

MAPREDUCE-1635. ResourceEstimator does not work after MAPREDUCE-842. (Amareshwari Sriramadasu via vinodkv) MAPREDUCE-1526. Cache the job related information while submitting the job. (rksingh) HADOOP-6674. Turn off SASL checksums for RPCs. (jitendra via omalley) HADOOP-5958. Replace fork of DF with library call. (cdouglas via omalley) HDFS-999. Secondary namenode should login using kerberos if security is configured. Bugfix to original patch. (jhoman) MAPREDUCE-1594. Support for SleepJobs in Gridmix (rksingh) HDFS-1007. Fix. ServiceName for delegation token for Hftp has hftp port and not RPC port. MAPREDUCE-1376. Support for varied user submissions in Gridmix (rksingh) HDFS-1080. SecondaryNameNode image transfer should use the defined http address rather than local ip address (jhoman) HADOOP-6661. User document for UserGroupInformation.doAs for secure impersonation. (jitendra) MAPREDUCE-1624. Documents the job credentials and associated details to do with delegation tokens (ddas) HDFS-1036. Documentation for fetchdt for forrest (boryas) HDFS-1039. New patch on top of previous patch. Gets namenode address from conf. (jitendra) HADOOP-6656. Renew Kerberos TGT when 80% of the renew lifetime has been used up. (omalley) HADOOP-6653. Protect against NPE in setupSaslConnection when real user is null. (omalley) HADOOP-6649. An error in the previous committed patch. (jitendra) HADOOP-6652. ShellBasedUnixGroupsMapping shouldn't have a cache. (ddas) HADOOP-6649. login object in UGI should be inside the subject (jitendra) HADOOP-6637. Benchmark overhead of RPC session establishment (shv via jitendra) HADOOP-6648. Credentials must ignore null tokens that can be generated when using HFTP to talk to insecure clusters. (omalley) HADOOP-6632. Fix on JobTracker to reuse filesystem handles if possible. (ddas) HADOOP-6647. balancer fails with "is not authorized for protocol interface NamenodeProtocol" in secure environment (boryas) MAPREDUCE-1612. job conf file is not accessible from job history

web page. (Ravi Gummadi via vinodkv) MAPREDUCE-1611. Refresh nodes and refresh queues doesnt work with service authorization enabled. (Amar Kamat via vinodkv) HADOOP-6644. util.Shell getGROUPS_FOR_USER_COMMAND method name - should use common naming convention (boryas) MAPREDUCE-1609. Fixes a problem with localization of job log directories when tasktracker is re-initialized that can result in failed tasks. (Amareshwari Sriramadasu via yhemanth) MAPREDUCE-1610. Update forrest documentation for directory structure of localized files. (Ravi Gummadi via yhemanth) MAPREDUCE-1532. Fixes a javadoc and an exception message in JobInProgress when the authenticated user is different from the user in conf. (ddas) MAPREDUCE-1417. Update forrest documentation for private and public distributed cache files. (Ravi Gummadi via yhemanth) HADOOP-6634. AccessControlList uses full-principal names to verify acls causing queue-acls to fail (vinodkv) HADOOP-6642. Fix javac, javadoc, findbugs warnings. (chrisdo via acmurthy) HDFS-1044. Cannot submit mapreduce job from secure client to unsecure sever. (boryas) 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-6632. Support for using different Kerberos keys for different instances of Hadoop services. (jitendra) HADOOP-6526. Need mapping from long principal names to local OS user names. (jitendra) MAPREDUCE-1604. Update Forrest documentation for job authorization ACLs. (Amareshwari Sriramadasu via yhemanth) HDFS-1045. In secure clusters, re-login is necessary for https clients before opening connections (jhoman) HADOOP-6603. Addition to original patch to be explicit about new method not being for general use. (jhoman) MAPREDUCE-1543. Add audit log messages for job and queue access control checks. (Amar Kamat via yhemanth) MAPREDUCE-1606. Fixed occassinal timeout in TestJobACL. (Ravi Gummadi via acmurthy) HADOOP-6633. normalize property names for JT/NN kerberos principal names in configuration. (boryas) HADOOP-6613. Changes the RPC server so that version is checked first on an incoming connection. (Kan Zhang via ddas) HADOOP-5592. Fix typo in Streaming doc in reference to GzipCodec.

(Corinne Chandel via tomwhite) MAPREDUCE-813. Updates Streaming and M/R tutorial documents. (Corinne Chandel via ddas) MAPREDUCE-927. Cleanup of task-logs should happen in TaskTracker instead of the Child. (Amareshwari Sriramadasu via vinodkv) HDFS-1039. Service should be set in the token in JspHelper.getUGI. (jitendra) MAPREDUCE-1599. MRBench reuses jobConf and credentials there in. (jitendra) MAPREDUCE-1522. FileInputFormat may use the default FileSystem for the input path. (Tsz Wo (Nicholas), SZE via cdouglas) HDFS-1036. In DelegationTokenFetch pass Configuration object so getDefaultUri will work correctly. HDFS-1038. In nn_browsedfscontent.jsp fetch delegation token only if security is enabled. (jitendra) HDFS-1036. in DelegationTokenFetch dfs.getURI returns no port (boryas) HADOOP-6598. Verbose logging from the Group class (one more case) (boryas) HADOOP-6627. Bad Connection to FS" message in FSShell should print message from the exception (boryas) HDFS-1033. In secure clusters, NN and SNN should verify that the remote principal during image and edits transfer (jhoman) HDFS-1005. Fixes a bug to do with calling the cross-realm API in Fsck client. (ddas) MAPREDUCE-1422. Fix cleanup of localized job directory to work if files with non-deletable permissions are created within it. (Amar Kamat via yhemanth) HDFS-1007. Fixes bugs to do with 20S cluster talking to 20 over hftp (borya) MAPREDUCE:1566. Fixes bugs in the earlier patch. (ddas) HDFS-992. A bug in backport for HDFS-992. (jitendra) HADOOP-6598. Remove verbose logging from the Groups class. (borya) HADOOP-6620. NPE if renewer is passed as null in getDelegationToken. (jitendra) HDFS-1023. Second Update to original patch to fix username (jhoman) MAPREDUCE-1435. Add test cases to already committed patch for this jira, synchronizing changes with trunk. (yhemanth) HADOOP-6612. Protocols RefreshUserToGroupMappingsProtocol and RefreshAuthorizationPolicyProtocol authorization settings thru KerberosInfo (boryas)

MAPREDUCE-1566. Bugfix for tests on top of the earlier patch. (ddas) MAPREDUCE-1566. Mechanism to import tokens and secrets from a file in to the submitted job. (omalley) HADOOP-6603. Provide workaround for issue with Kerberos not resolving corss-realm principal. (kan via jhoman) HDFS-1023. Update to original patch to fix username (jhoman) HDFS-814. Add an api to get the visible length of a DFSDataInputStream. (hairong) HDFS-1023. Allow http server to start as regular user if https principal is not defined. (jhoman) HDFS-1022. Merge all three test specs files (common, hdfs, mapred) into one. (steffl) HDFS-101. DFS write pipeline: DFSClient sometimes does not detect second datanode failure. (hairong) HDFS-1015. Intermittent failure in TestSecurityTokenEditLog. (jitendra) MAPREDUCE-1550. A bugfix on top of what was committed earlier (ddas). MAPREDUCE-1155. DISABLING THE TestStreamingExitStatus temporarily. (ddas) HDFS-1020. Changes the check for renewer from short name to long name in the cancel/renew delegation token methods. (jitendra via ddas) HDFS-1019. Fixes values of delegation token parameters in hdfs-default.xml. (jitendra via ddas) MAPREDUCE-1430. Fixes a backport issue with the earlier patch. (ddas) MAPREDUCE-1559. Fixes a problem in DelegationTokenRenewal class to do with using the right credentials when talking to the NameNode.(ddas) MAPREDUCE-1550. Fixes a problem to do with creating a filesystem using the user's UGI in the JobHistory browsing. (ddas) HADOOP-6609. Fix UTF8 to use a thread local DataOutputBuffer instead of a static that was causing a deadlock in RPC. (omalley) HADOOP-6584. Fix javadoc warnings introduced by original HADOOP-6584 patch (jhoman) HDFS-1017. browsedfs jsp should call JspHelper.getUGI rather than using createRemoteUser(). (jhoman) MAPREDUCE-899. Modified LinuxTaskController to check that task-controller has right permissions and ownership before performing any actions. (Amareshwari Sriramadasu via yhemanth) HDFS-204. Revive number of files listed metrics. (hairong) HADOOP-6569. FsShell#cat should avoid calling uneccessary getFileStatus before opening a file to read. (hairong)

HDFS-1014. Error in reading delegation tokens from edit logs. (jitendra) HDFS-458. Add under-10-min tests from 0.22 to 0.20.1xx, only the tests that already exist in 0.20.1xx (steffl) MAPREDUCE-1155. Just pulls out the TestStreamingExitStatus part of the patch from jira (that went to 0.22). (ddas) HADOOP-6600. Fix for branch backport only. Comparing of user should use equals. (boryas). HDFS-1006. Fixes NameNode and SecondaryNameNode to use kerberizedSSL for the http communication. (Jakob Homan via ddas) HDFS-1007. Fixes a bug on top of the earlier patch. (ddas) HDFS-1005. Fsck security. Makes it work over kerberized SSL (boryas and jhoman) HDFS-1007. Makes HFTP and Distcp use kerberized SSL. (ddas) MAPREDUCE-1455. Fixes a testcase in the earlier patch. (Ravi Gummadi via ddas) HDFS-992. Refactors block access token implementation to conform to the generic Token interface. (Kan Zhang via ddas) HADOOP-6584. Adds KrbSSL connector for jetty. (Jakob Homan via ddas) HADOOP-6589. Add a framework for better error messages when rpc connections fail to authenticate. (Kan Zhang via omalley) HADOOP-6600,HDFS-1003,MAPREDUCE-1539. mechanism for authorization check for inter-server protocols(boryas) HADOOP-6580,HDFS-993,MAPREDUCE-1516. UGI should contain authentication method. Namenode and JT should issue a delegation token only for kerberos authenticated clients. (jitendra) HDFS-984,HADOOP-6573,MAPREDUCE-1537. Delegation Tokens should be persisted in Namenode, and corresponding changes in common and mr. (jitendra) HDFS-994. Provide methods for obtaining delegation token from Namenode for hftp and other uses. Incorporates HADOOP-6594: Update hdfs script to provide fetchdt tool. (jitendra) HADOOP-6586. Log authentication and authorization failures and successes (boryas) HDFS-991. Allow use of delegation tokens to authenticate to the HDFS servlets. (omalley) HADOOP-1849. Add undocumented configuration parameter for per handler call queue size in IPC Server. (shv) HADOOP-6599. Split existing RpcMetrics with summary in RpcMetrics and details information in RpcDetailedMetrics. (suresh)

HDFS-985. HDFS should issue multiple RPCs for listing a large directory. (hairong) HDFS-1000. Updates libhdfs to use the new UGI. (ddas) MAPREDUCE-1532. Ensures all filesystem operations at the client is done as the job submitter. Also, changes the renewal to maintain list of tokens to renew. (ddas) HADOOP-6596. Add a version field to the seialization of the AbstractDelegationTokenIdentifier. (omalley) HADOOP-5561. Add javadoc.maxmemory to build.xml to allow larger memory. (jkhoman via omalley) HADOOP-6579. Add a mechanism for encoding and decoding Tokens in to url-safe strings. (omalley) MAPREDUCE-1354. Make incremental changes in jobtracker for improving scalability (acmurthy) HDFS-999.Secondary namenode should login using kerberos if security is configured(boryas) MAPREDUCE-1466. Added a private configuration variable mapreduce.input.num.files, to store number of input files being processed by M/R job. (Arun Murthy via yhemanth) MAPREDUCE-1403. Save file-sizes of each of the artifacts in DistributedCache in the JobConf (Arun Murthy via yhemanth) HADOOP-6543. Fixes a compilation problem in the original commit. (ddas) MAPREDUCE-1520. Moves a call to setWorkingDirectory in Child to within a doAs block. (Amareshwari Sriramadasu via ddas) HADOOP-6543. Allows secure clients to talk to unsecure clusters. (Kan Zhang via ddas) MAPREDUCE-1505. Delays construction of the job client until it is really required. (Arun C Murthy via ddas) HADOOP-6549. TestDoAsEffectiveUser should use ip address of the host for superuser ip check. (jitendra) HDFS-464. Fix memory leaks in libhdfs. (Christian Kunz via suresh) HDFS-946. NameNode should not return full path name when lisitng a diretory or getting the status of a file. (hairong) MAPREDUCE-1398. Fix TaskLauncher to stop waiting for slots on a TIP that is killed / failed. (Amareshwari Sriramadasu via yhemanth) MAPREDUCE-1476. Fix the M/R framework to not call commit for special tasks like job setup/cleanup and task cleanup. (Amareshwari Sriramadasu via yhemanth) HADOOP-6467. Performance improvement for liststatus on directories in hadoop archives. (mahadev)

HADOOP-6558. archive does not work with distcp -update. (nicholas via mahadev) HADOOP-6583. Captures authentication and authorization metrics. (ddas) MAPREDUCE-1316. Fixes a memory leak of TaskInProgress instances in the jobtracker. (Amar Kamat via yhemanth) MAPREDUCE-670. Creates ant target for 10 mins patch test build. (Jothi Padmanabhan via gkesavan) MAPREDUCE-1430. JobTracker should be able to renew delegation tokens for the jobs(boryas) HADOOP-6551, HDFS-986, MAPREDUCE-1503. Change API for tokens to throw exceptions instead of returning booleans. (omalley) HADOOP-6545. Changes the Key for the FileSystem to be UGI. (ddas) HADOOP-6572. Makes sure that SASL encryption and push to responder queue for the RPC response happens atomically. (Kan Zhang via ddas) HDFS-965. Split the HDFS TestDelegationToken into two tests, of which one proxy users and the other normal users. (jitendra via omalley) HADOOP-6560. HarFileSystem throws NPE for har://hdfs-/foo (nicholas via mahadev) MAPREDUCE-686. Move TestSpeculativeExecution.Fake* into a separate class so that it can be used by other tests. (Jothi Padmanabhan via sharad) MAPREDUCE-181. Fixes an issue in the use of the right config. (ddas) MAPREDUCE-1026. Fixes a bug in the backport. (ddas) HADOOP-6559. Makes the RPC client automatically re-login when the SASL connection setup fails. This is applicable to only keytab based logins. (ddas) HADOOP-2141. Backport changes made in the original JIRA to aid fast unit tests in Map/Reduce. (Amar Kamat via yhemanth) HADOOP-6382. Import the mavenizable pom file structure and adjust the build targets and bin scripts. (gkesvan via ltucker) MAPREDUCE-1425. archive throws OutOfMemoryError (mahadev) MAPREDUCE-1399. The archive command shows a null error message. (nicholas) HADOOP-6552. Puts renewTGT=true and useTicketCache=true for the keytab kerberos options. (ddas) MAPREDUCE-1433. Adds delegation token for MapReduce (ddas) HADOOP-4359. Fixes a bug in the earlier backport. (ddas) HADOOP-6547, HDFS-949, MAPREDUCE-1470. Move Delegation token into Common so that we can use it for MapReduce also. It is a combined patch for common, hdfs and mr. (jitendra)

HADOOP-6510,HDFS-935,MAPREDUCE-1464. Support for doAs to allow authenticated superuser to impersonate proxy users. It is a combined patch with compatible fixes in HDFS and MR. (jitendra) MAPREDUCE-1435. Fixes the way symlinks are handled when cleaning up work directory files. (Ravi Gummadi via yhemanth) MAPREDUCE-6419. Fixes a bug in the backported patch. (ddas) MAPREDUCE-1457. Fixes JobTracker to get the FileSystem object within getStagingAreaDir within a privileged block. Fixes Child.java to use the appropriate UGIs while getting the TaskUmbilicalProtocol proxy and while executing the task. Contributed by Jakob Homan. (ddas) MAPREDUCE-1440. Replace the long user name in MapReduce with the local name. (ddas) HADOOP-6419. Adds SASL based authentication to RPC. Also includes the MAPREDUCE-1335 and HDFS-933 patches. Contributed by Kan Zhang. (ddas) HADOOP-6538. Sets hadoop.security.authentication to simple by default. (ddas) HDFS-938. Replace calls to UGI.getUserName() with UGI.getShortUserName()(boryas) HADOOP-6544. fix ivy settings to include JSON jackson.codehause.org libs for .20 (boryas) HDFS-907. Add tests for getBlockLocations and totalLoad metrics. (rphulari) HADOOP-6204. Implementing aspects development and fault injeciton framework for Hadoop (cos) MAPREDUCE-1432. Adds hooks in the jobtracker and tasktracker for loading the tokens in the user's ugi. This is required for the copying of files from the hdfs. (Devaraj Das vi boryas) MAPREDUCE-1383. Automates fetching of delegation tokens in File*Formats Distributed Cache and Distcp. Also, provides a config mapreduce.job.hdfs-servers that the jobs can populate with a comma separated list of namenodes. The job client automatically fetches delegation tokens from those namenodes. HADOOP-6337. Update FilterInitializer class to be more visible and take a conf for further development. (jhoman) HADOOP-6520. UGI should load tokens from the environment. (jitendra) HADOOP-6517, HADOOP-6518. Ability to add/get tokens from UserGroupInformation & Kerberos login in UGI should honor KRB5CCNAME (jitendra) HADOOP-6299. Reimplement the UserGroupInformation to use the OS specific and Kerberos JAAS login. (jhoman, ddas, oom) HADOOP-6524. Contrib tests are failing Clover'ed build. (cos)

MAPREDUCE-842. Fixing a bug in the earlier version of the patch related to improper localization of the job token file. (Ravi Gummadi via yhemanth) HDFS-919. Create test to validate the BlocksVerified metric (Gary Murry via cos) MAPREDUCE-1186. Modified code in distributed cache to set permissions only on required set of localized paths. (Amareshwari Sriramadasu via yhemanth) HDFS-899. Delegation Token Implementation. (Jitendra Nath Pandey) MAPREDUCE-896. Enhance tasktracker to cleanup files that might have been created by user tasks with non-writable permissions. (Ravi Gummadi via yhemanth) HADOOP-5879. Read compression level and strategy from Configuration for gzip compression. (He Yongqiang via cdouglas) HADOOP-6161. Add get/setEnum methods to Configuration. (cdouglas) HADOOP-6382 Mavenize the build.xml targets and update the bin scripts in preparation for publishing POM files (giri kesavan via ltucker) HDFS-737. Add full path name of the file to the block information and summary of total number of files, blocks, live and deadnodes to metasave output. (Jitendra Nath Pandey via suresh) 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-6521. Fix backward compatiblity issue with umask when applications use deprecated param dfs.umask in configuration or use FsPermission.setUMask(). (suresh) HDFS-737. Add full path name of the file to the block information and summary of total number of files, blocks, live and deadnodes to metasave output. (Jitendra Nath Pandey via suresh) HADOOP-6521. Fix backward compatiblity issue with umask when applications use deprecated param dfs.umask in configuration or use FsPermission.setUMask(). (suresh) MAPREDUCE-433. Use more reliable counters in TestReduceFetch. (Christopher Douglas via ddas) MAPREDUCE-744. Introduces the notion of a public distributed cache. (ddas) MAPREDUCE-1140. Fix DistributedCache to not decrement reference counts for unreferenced files in error conditions. (Amareshwari Sriramadasu via yhemanth) MAPREDUCE-1284. Fix fts_open() call in task-controller that was failing LinuxTaskController unit tests. (Ravi Gummadi via yhemanth) MAPREDUCE-1098. Fixed the distributed-cache to not do i/o while holding a global lock.

(Amareshwari Sriramadasu via acmurthy) MAPREDUCE-1338. Introduces the notion of token cache using which tokens and secrets can be sent by the Job client to the JobTracker. (Boris Shkolnik) HADOOP-6495. Identifier should be serialized after the password is created In Token constructor. (Jitendra Nath Pandey) HADOOP-6506. Failing tests prevent the rest of test targets from execution. (cos) HADOOP-5457. Fix to continue to run builds even if contrib test fails. (gkesavan) MAPREDUCE-856. Setup secure permissions for distributed cache files. (Vinod Kumar Vavilapalli via yhemanth) MAPREDUCE-871. Fix ownership of Job/Task local files to have correct group ownership according to the egid of the tasktracker. (Vinod Kumar Vavilapalli via yhemanth) MAPREDUCE-476. Extend DistributedCache to work locally (LocalJobRunner). (Philip Zeyliger via tomwhite) MAPREDUCE-711. Removed Distributed Cache from Common, to move it under Map/Reduce. (Vinod Kumar Vavilapalli via yhemanth) MAPREDUCE-478. Allow map and reduce jvm parameters, environment variables and ulimit to be set separately. (acmurthy) MAPREDUCE-842. Setup secure permissions for localized job files, intermediate outputs and log files on tasktrackers. (Vinod Kumar Vavilapalli via yhemanth) MAPREDUCE-408. Fixes an assertion problem in TestKillSubProcesses. (Ravi Gummadi via ddas) HADOOP-4041. IsolationRunner does not work as documented. (Philip Zeyliger via tomwhite) MAPREDUCE-181. Changes the job submission process to be secure. (Devaraj Das) 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-5771. Implements unit tests for LinuxTaskController. (Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth) HADOOP-4656, HDFS-685, MAPREDUCE-1083. Use the user-to-groups mapping service in the NameNode and JobTracker. Combined patch for these 3 jiras otherwise tests fail. (Jitendra Nath Pandey) MAPREDUCE-1250. Refactor job token to use a common token interface. (Jitendra Nath Pandey) MAPREDUCE-1026. Shuffle should be secure. (Jitendra Nath Pandey)

HADOOP-4268. Permission checking in fsck. (Jitendra Nath Pandey) HADOOP-6415. Adding a common token interface for both job token and delegation token. (Jitendra Nath Pandey) HADOOP-6367, HDFS-764. Moving Access Token implementation from Common to HDFS. These two jiras must be committed together otherwise build will fail. (Jitendra Nath Pandey) HDFS-409. Add more access token tests (Jitendra Nath Pandey) HADOOP-6132. RPC client opens an extra connection for VersionedProtocol. (Jitendra Nath Pandey) HDFS-445. pread() fails when cached block locations are no longer valid. (Jitendra Nath Pandey) HDFS-195. Need to handle access token expiration when re-establishing the pipeline for dfs write. (Jitendra Nath Pandey) HADOOP-6176. Adding a couple private methods to AccessTokenHandler for testing purposes. (Jitendra Nath Pandey) HADOOP-5824. remove OP_READ_METADATA functionality from Datanode. (Jitendra Nath Pandey) HADOOP-4359. Access Token: Support for data access authorization checking on DataNodes. (Jitendra Nath Pandey) MAPREDUCE-1372. Fixed a ConcurrentModificationException in jobtracker. (Arun C Murthy via yhemanth) MAPREDUCE-1316. Fix jobs' retirement from the JobTracker to prevent memory leaks via stale references. (Amar Kamat via acmurthy) MAPREDUCE-1342. Fixed deadlock in global blacklisting of tasktrackers. (Amareshwari Sriramadasu via acmurthy) HADOOP-6460. Reinitializes buffers used for serializing responses in ipc server on exceeding maximum response size to free up Java heap. (suresh) MAPREDUCE-1100. Truncate user logs to prevent TaskTrackers' disks from filling up. (Vinod Kumar Vavilapalli via acmurthy) MAPREDUCE-1143. Fix running task counters to be updated correctly when speculative attempts are running for a TIP. (Rahul Kumar Singh via yhemanth) HADOOP-6151, 6281, 6285, 6441. Add HTML quoting of the parameters to all of the servlets to prevent XSS attacks. (omalley) MAPREDUCE-896. Fix bug in earlier implementation to prevent spurious logging in tasktracker logs for absent file paths. (Ravi Gummadi via yhemanth) MAPREDUCE-676. Fix Hadoop Vaidya to ensure it works for map-only jobs. (Suhas Gogate via acmurthy)

HADOOP-5582. Fix Hadoop Vaidya to use new Counters in org.apache.hadoop.mapreduce package. (Suhas Gogate via acmurthy) HDFS-595. umask settings in configuration may now use octal or symbolic instead of decimal. Update HDFS tests as such. (jghoman) MAPREDUCE-1068. Added a verbose error message when user specifies an incorrect -file parameter. (Amareshwari Sriramadasu via acmurthy) MAPREDUCE-1171. Allow the read-error notification in shuffle to be configurable. (Amareshwari Sriramadasu via acmurthy) MAPREDUCE-353. Allow shuffle read and connection timeouts to be configurable. (Amareshwari Sriramadasu via acmurthy) HDFS-781. Namenode metrics PendingDeletionBlocks is not decremented. (suresh) MAPREDUCE-1185. Redirect running job url to history url if job is already retired. (Amareshwari Sriramadasu and Sharad Agarwal via sharad) MAPREDUCE-754. Fix NPE in expiry thread when a TT is lost. (Amar Kamat via sharad) MAPREDUCE-896. Modify permissions for local files on tasktracker before deletion so they can be deleted cleanly. (Ravi Gummadi via yhemanth) HADOOP-5771. Implements unit tests for LinuxTaskController. (Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth) MAPREDUCE-1124. Import Gridmix3 and Rumen. (cdouglas) MAPREDUCE-1063. Document gridmix benchmark. (cdouglas) HDFS-758. Changes to report status of decommissioining on the namenode web UI. (jitendra) HADOOP-6234. Add new option dfs.umaskmode to set umask in configuration to use octal or symbolic instead of decimal. (Jakob Homan via suresh) MAPREDUCE-1147. Add map output counters to new API. (Amar Kamat via cdouglas) MAPREDUCE-1182. Fix overflow in reduce causing allocations to exceed the configured threshold. (cdouglas) HADOOP-4933. Fixes a ConcurrentModificationException problem that shows up when the history viewer is accessed concurrently. (Amar Kamat via ddas) MAPREDUCE-1140. Fix DistributedCache to not decrement reference counts for unreferenced files in error conditions. (Amareshwari Sriramadasu 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-5675. Do not launch a job if DistCp has no work to do. (Tsz Wo (Nicholas), SZE via cdouglas)

HDFS-457. Better handling of volume failure in Data Node storage, This fix is a port from hdfs-0.22 to common-0.20 by Boris Shkolnik. Contributed by Erik Steffl HDFS-625. Fix NullPointerException thrown from ListPathServlet. Contributed by Suresh Srinivas. HADOOP-6343. Log unexpected throwable object caught in RPC. Contributed by Jitendra Nath Pandey MAPREDUCE-1186. Fixed DistributedCache to do a recursive chmod on just the per-cache directory, not all of mapred.local.dir. (Amareshwari Sriramadasu via acmurthy) MAPREDUCE-1231. Add an option to distcp to ignore checksums when used with the upgrade option. (Jothi Padmanabhan via yhemanth) MAPREDUCE-1219. Fixed JobTracker to not collect per-job metrics, thus easing load on it. (Amareshwari Sriramadasu via acmurthy) HDFS-761. Fix failure to process rename operation from edits log due to quota verification. (suresh) MAPREDUCE-1196. Fix FileOutputCommitter to use the deprecated cleanupJob api correctly. (acmurthy) HADOOP-6344. rm and rmr immediately delete files rather than sending to trash, despite trash being enabled, if a user is over-quota. (jhoman) MAPREDUCE-1160. Reduce verbosity of log lines in some Map/Reduce classes to avoid filling up jobtracker logs on a busy cluster. (Ravi Gummadi and Hong Tang via yhemanth) HDFS-587. Add ability to run HDFS with MR test on non-default queue, also updated junit dependendcy from junit-3.8.1 to junit-4.5 (to make it possible to use Configured and Tool to process command line to be able to specify a queue). Contributed by Erik Steffl. MAPREDUCE-1158. Fix JT running maps and running reduces metrics. (sharad) MAPREDUCE-947. Fix bug in earlier implementation that was causing unit tests to fail. (Ravi Gummadi via yhemanth) MAPREDUCE-1062. Fix MRReliabilityTest to work with retired jobs (Contributed by Sreekanth Ramakrishnan) MAPREDUCE-1090. Modified log statement in TaskMemoryManagerThread to include task attempt id. (yhemanth) MAPREDUCE-1098. Fixed the distributed-cache to not do i/o while holding a global lock. (Amareshwari Sriramadasu via acmurthy) MAPREDUCE-1048. Add occupied/reserved slot usage summary on jobtracker UI. (Amareshwari Sriramadasu via sharad) MAPREDUCE-1103. Added more metrics to Jobtracker. (sharad)

MAPREDUCE-947. Added commitJob and abortJob apis to OutputCommitter. Enhanced FileOutputCommitter to create a _SUCCESS file for successful jobs. (Amar Kamat & Jothi Padmanabhan via acmurthy) MAPREDUCE-1105. Remove max limit configuration in capacity scheduler in favor of max capacity percentage thus allowing the limit to go over queue capacity. (Rahul Kumar Singh via yhemanth) MAPREDUCE-1086. Setup Hadoop logging environment for tasks to point to task related parameters. (Ravi Gummadi via yhemanth) MAPREDUCE-739. Allow relative paths to be created inside archives. (mahadev) HADOOP-6097. Multiple bugs w/ Hadoop archives (mahadev) HADOOP-6231. Allow caching of filesystem instances to be disabled on a per-instance basis (ben slusky via mahadev) MAPREDUCE-826. harchive doesn't use ToolRunner / harchive returns 0 even if the job fails with exception (koji via mahadev) HDFS-686. NullPointerException is thrown while merging edit log and image. (hairong) HDFS-709. Fix TestDFSShell failure due to rename bug introduced by HDFS-677. (suresh) HDFS-677. Rename failure when both source and destination quota exceeds results in deletion of source. (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) MAPREDUCE-732. Removed spurious log statements in the node blacklisting logic. (Sreekanth Ramakrishnan via yhemanth) MAPREDUCE-144. Includes dump of the process tree in task diagnostics when a task is killed due to exceeding memory limits. (Vinod Kumar Vavilapalli via yhemanth) MAPREDUCE-979. Fixed JobConf APIs related to memory parameters to return values of new configuration variables when deprecated variables are disabled. (Sreekanth Ramakrishnan via yhemanth) MAPREDUCE-277. Makes job history counters available on the job history viewers. (Jothi Padmanabhan via ddas) HADOOP-5625. Add operation duration to clienttrace. (Lei Xu via cdouglas) HADOOP-5222. Add offset to datanode clienttrace. (Lei Xu via cdouglas) HADOOP-6218. Adds a feature where TFile can be split by Record Sequence number. Contributed by Hong Tang and Raghu Angadi. MAPREDUCE-1088. Changed permissions on JobHistory files on local disk to 0744. Contributed by Arun C. Murthy.

HADOOP-6304. Use java.io.File.set{Readable|Writable|Executable} where possible in RawLocalFileSystem. Contributed by Arun C. Murthy. MAPREDUCE-270. Fix the tasktracker to optionally send an out-of-band heartbeat on task-completion for better job-latency. Contributed by Arun C. Murthy Configuration changes: add mapreduce.tasktracker.outofband.heartbeat MAPREDUCE-1030. Fix capacity-scheduler to assign a map and a reduce task per-heartbeat. Contributed by Rahuk K Singh. MAPREDUCE-1028. Fixed number of slots occupied by cleanup tasks to one irrespective of slot size for the job. Contributed by Ravi Gummadi. MAPREDUCE-964. Fixed start and finish times of TaskStatus to be consistent, thereby fixing inconsistencies in metering tasks. Contributed by Sreekanth Ramakrishnan. HADOOP-5976. Add a new command, classpath, to the hadoop script. Contributed by Owen O'Malley and Gary Murry HADOOP-5784. Makes the number of heartbeats that should arrive a second at the JobTracker configurable. Contributed by Amareshwari Sriramadasu. MAPREDUCE-945. Modifies MRBench and TestMapRed to use ToolRunner so that options such as queue name can be passed via command line. Contributed by Sreekanth Ramakrishnan. HADOOP:5420 Correct bug in earlier implementation by Arun C. Murthy HADOOP-5363 Add support for proxying connections to multiple clusters with different versions to hdfsproxy. Contributed by Zhiyong Zhang HADOOP-5780. Improve per block message prited by -metaSave in HDFS. (Raghu Angadi) HADOOP-6227. Fix Configuration to allow final parameters to be set to null and prevent them from being overridden. Contributed by Amareshwari Sriramadasu. MAPREDUCE-430 Added patch supplied by Amar Kamat to allow roll forward on branch to includ externally committed patch. MAPREDUCE-768. Provide an option to dump jobtracker configuration in JSON format to standard output. Contributed by V.V.Chaitanya MAPREDUCE-834 Correct an issue created by merging this issue with patch attached to external Jira. HADOOP-6184 Provide an API to dump Configuration in a JSON format. Contributed by V.V.Chaitanya Krishna. MAPREDUCE-745 Patch added for this issue to allow branch-0.20 to merge cleanly.

MAPREDUCE:478 Allow map and reduce jvm parameters, environment variables and ulimit to be set separately. MAPREDUCE:682 Removes reservations on tasktrackers which are blacklisted. Contributed by Sreekanth Ramakrishnan. HADOOP:5420 Support killing of process groups in LinuxTaskController binary 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. Contributed by Ravi Gummadi. MAPREDUCE:467 Provide ability to collect statistics about total tasks and succeeded tasks in different time windows. MAPREDUCE-817. Add a cache for retired jobs with minimal job info and provide a way to access history file url MAPREDUCE-814. Provide a way to configure completed job history files to be on HDFS. MAPREDUCE-838 Fixes a problem in the way commit of task outputs happens. The bug was that even if commit failed, the task would be declared as successful. Contributed by Amareshwari Sriramadasu. MAPREDUCE-809 Fix job-summary logs to correctly record final status of FAILED and KILLED jobs. MAPREDUCE-740 Log a job-summary at the end of a job, while allowing it to be configured to use a custom appender if desired. MAPREDUCE-771 Fixes a bug which delays normal jobs in favor of high-ram jobs. HADOOP-5420 Support setsid based kill in LinuxTaskController. MAPREDUCE-733 Fixes a bug that when a task tracker is killed , it throws exception. Instead it should catch it and process it and allow the rest of the flow to go through MAPREDUCE-734 Fixes a bug which prevented hi ram jobs from being removed from the scheduler queue. MAPREDUCE-693 Fixes a bug that when a job is submitted and the JT is restarted (before job files have been written) and the job is killed after recovery, the conf files fail to be moved to the "done" subdirectory. MAPREDUCE-722 Fixes a bug where more slots are getting reserved for HiRAM job tasks than required. MAPREDUCE-683 TestJobTrackerRestart failed because of stale filemanager cache (which was created once per jvm). This patch makes sure that the filemanager is inited upon every JobHistory.init() and hence upon every restart. Note that this wont happen in production as upon a restart the new jobtracker will start in a new jvm and hence a new cache will be created. MAPREDUCE-709 Fixes a bug where node health check script does

not display the correct message on timeout. MAPREDUCE-708 Fixes a bug where node health check script does not refresh the "reason for blacklisting". MAPREDUCE-522 Rewrote TestQueueCapacities to m