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Posted to common-commits@hadoop.apache.org by om...@apache.org on 2009/08/28 01:22:28 UTC
svn commit: r808676 - in /hadoop/common/branches/branch-0.20: CHANGES.txt
build.xml src/docs/releasenotes.html
Author: omalley
Date: Thu Aug 27 23:22:28 2009
New Revision: 808676
URL: http://svn.apache.org/viewvc?rev=808676&view=rev
Log:
Preparing for release 0.20.1
Modified:
hadoop/common/branches/branch-0.20/CHANGES.txt
hadoop/common/branches/branch-0.20/build.xml
hadoop/common/branches/branch-0.20/src/docs/releasenotes.html
Modified: hadoop/common/branches/branch-0.20/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20/CHANGES.txt?rev=808676&r1=808675&r2=808676&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/CHANGES.txt (original)
+++ hadoop/common/branches/branch-0.20/CHANGES.txt Thu Aug 27 23:22:28 2009
@@ -1,6 +1,6 @@
Hadoop Change Log
-Release 0.20.1 - Unreleased
+Release 0.20.1 - 2009-08-27
INCOMPATIBLE CHANGES
Modified: hadoop/common/branches/branch-0.20/build.xml
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20/build.xml?rev=808676&r1=808675&r2=808676&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/build.xml (original)
+++ hadoop/common/branches/branch-0.20/build.xml Thu Aug 27 23:22:28 2009
@@ -27,7 +27,7 @@
<property name="Name" value="Hadoop"/>
<property name="name" value="hadoop"/>
- <property name="version" value="0.20.1-dev"/>
+ <property name="version" value="0.20.2-dev"/>
<property name="final.name" value="${name}-${version}"/>
<property name="year" value="2009"/>
Modified: hadoop/common/branches/branch-0.20/src/docs/releasenotes.html
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20/src/docs/releasenotes.html?rev=808676&r1=808675&r2=808676&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/src/docs/releasenotes.html (original)
+++ hadoop/common/branches/branch-0.20/src/docs/releasenotes.html Thu Aug 27 23:22:28 2009
@@ -2,7 +2,7 @@
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<title>Hadoop 0.20.0 Release Notes</title>
+<title>Hadoop 0.20.1 Release Notes</title>
<STYLE type="text/css">
H1 {font-family: sans-serif}
H2 {font-family: sans-serif; margin-left: 7mm}
@@ -10,141 +10,199 @@
</STYLE>
</head>
<body>
-<h1>Hadoop 0.20.0 Release Notes</h1>
+<h1>Hadoop 0.20.1 Release Notes</h1>
These release notes include new developer and user-facing incompatibilities, features, and major improvements. The table below is sorted by Component.
-
- <a name="changes"></a>
-<h2>Changes Since Hadoop 0.19.1</h2>
-<table border="1">
-<tr bgcolor="#DDDDDD">
-<th align="left">Issue</th><th align="left">Component</th><th align="left">Notes</th>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3344">HADOOP-3344</a></td><td>build</td><td>Changed build procedure for libhdfs to build correctly for different platforms. Build instructions are in the Jira item.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4253">HADOOP-4253</a></td><td>conf</td><td>Removed from class org.apache.hadoop.fs.RawLocalFileSystem deprecated methods public String getName(), public void lock(Path p, boolean shared) and public void release(Path p).</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4454">HADOOP-4454</a></td><td>conf</td><td>Changed processing of conf/slaves file to allow # to begin a comment.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4631">HADOOP-4631</a></td><td>conf</td><td>Split hadoop-default.xml into core-default.xml, hdfs-default.xml and mapreduce-default.xml.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4035">HADOOP-4035</a></td><td>contrib/capacity-sched</td><td>Changed capacity scheduler policy to take note of task memory requirements and task tracker memory availability.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4445">HADOOP-4445</a></td><td>contrib/capacity-sched</td><td>Changed JobTracker UI to better present the number of active tasks.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4576">HADOOP-4576</a></td><td>contrib/capacity-sched</td><td>Changed capacity scheduler UI to better present number of running and pending tasks.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4179">HADOOP-4179</a></td><td>contrib/chukwa</td><td>Introduced Vaidya rule based performance diagnostic tool for Map/Reduce jobs.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4827">HADOOP-4827</a></td><td>contrib/chukwa</td><td>Improved framework for data aggregation in Chuckwa.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4843">HADOOP-4843</a></td><td>contrib/chukwa</td><td>Introduced Chuckwa collection of job history.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-5030">HADOOP-5030</a></td><td>contrib/chukwa</td><td>Changed RPM install location to the value specified by build.properties file.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-5531">HADOOP-5531</a></td><td>contrib/chukwa</td><td>Disabled Chukwa unit tests for 0.20 branch only.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4789">HADOOP-4789</a></td><td>contrib/fair-share</td><td>Changed fair scheduler to divide resources equally between pools, not jobs.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4873">HADOOP-4873</a></td><td>contrib/fair-share</td><td>Changed fair scheduler UI to display minMaps and minReduces variables.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3750">HADOOP-3750</a></td><td>dfs</td><td>Removed deprecated method parseArgs from org.apache.hadoop.fs.FileSystem.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4029">HADOOP-4029</a></td><td>dfs</td><td>Added name node storage information to the dfshealth page, and moved data node information to a separated page.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4103">HADOOP-4103</a></td><td>dfs</td><td>Modified dfsadmin -report to report under replicated blocks. blocks with corrupt replicas, and missing blocks".</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4567">HADOOP-4567</a></td><td>dfs</td><td>Changed GetFileBlockLocations to return topology information for nodes that host the block replicas.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4572">HADOOP-4572</a></td><td>dfs</td><td>Moved org.apache.hadoop.hdfs.{CreateEditsLog, NNThroughputBenchmark} to org.apache.hadoop.hdfs.server.namenode.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4618">HADOOP-4618</a></td><td>dfs</td><td>Moved HTTP server from FSNameSystem to NameNode. Removed FSNamesystem.getNameNodeInfoPort(). Replaced FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort() with new method FSNamesystem.getDFSNameNodeAddress(). Removed constructor NameNode(bindAddress, conf).</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4826">HADOOP-4826</a></td><td>dfs</td><td>Introduced new dfsadmin command saveNamespace to command the name service to do an immediate save of the file system image.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4970">HADOOP-4970</a></td><td>dfs</td><td>Changed trash facility to use absolute path of the deleted file.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-5468">HADOOP-5468</a></td><td>documentation</td><td>Reformatted HTML documentation for Hadoop to use submenus at the left column.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3497">HADOOP-3497</a></td><td>fs</td><td>Changed the semantics of file globbing with a PathFilter (using the globStatus method of FileSystem). Previously, the filtering was too restrictive, so that a glob of /*/* and a filter that only accepts /a/b would not have matched /a/b. With this change /a/b does match. </td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4234">HADOOP-4234</a></td><td>fs</td><td>Changed KFS glue layer to allow applications to interface with multiple KFS metaservers.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4422">HADOOP-4422</a></td><td>fs/s3</td><td>Modified Hadoop file system to no longer create S3 buckets. Applications can create buckets for their S3 file systems by other means, for example, using the JetS3t API.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3063">HADOOP-3063</a></td><td>io</td><td>Introduced BloomMapFile subclass of MapFile that creates a Bloom filter from all keys.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-1230">HADOOP-1230</a></td><td>mapred</td><td>Replaced parameters with context obejcts in Mapper, Reducer, Partitioner, InputFormat, and OutputFormat classes.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-1650">HADOOP-1650</a></td><td>mapred</td><td>Upgraded all core servers to use Jetty 6</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3923">HADOOP-3923</a></td><td>mapred</td><td>Moved class org.apache.hadoop.mapred.StatusHttpServer to org.apache.hadoop.http.HttpServer.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3986">HADOOP-3986</a></td><td>mapred</td><td>Removed classes org.apache.hadoop.mapred.JobShell and org.apache.hadoop.mapred.TestJobShell. Removed from JobClient methods static void setCommandLineConfig(Configuration conf) and public static Configuration getCommandLineConfig().</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4188">HADOOP-4188</a></td><td>mapred</td><td>Removed Task's dependency on concrete file systems by taking list from FileSystem class. Added statistics table to FileSystem class. Deprecated FileSystem method getStatistics(Class<? extends FileSystem> cls).</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4210">HADOOP-4210</a></td><td>mapred</td><td>Changed public class org.apache.hadoop.mapreduce.ID to be an abstract class. Removed from class org.apache.hadoop.mapreduce.ID the methods public static ID read(DataInput in) and public static ID forName(String str).</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4305">HADOOP-4305</a></td><td>mapred</td><td>Improved TaskTracker blacklisting strategy to better exclude faulty tracker from executing tasks.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4435">HADOOP-4435</a></td><td>mapred</td><td>Changed JobTracker web status page to display the amount of heap memory in use. This changes the JobSubmissionProtocol.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4565">HADOOP-4565</a></td><td>mapred</td><td>Improved MultiFileInputFormat so that multiple blocks from the same node or same rack can be combined into a single split.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4749">HADOOP-4749</a></td><td>mapred</td><td>Added a new counter REDUCE_INPUT_BYTES.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4783">HADOOP-4783</a></td><td>mapred</td><td>Changed history directory permissions to 750 and history file permissions to 740.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3422">HADOOP-3422</a></td><td>metrics</td><td>Changed names of ganglia metrics to avoid conflicts and to better identify source function.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4284">HADOOP-4284</a></td><td>security</td><td>Introduced HttpServer method to support global filters.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4575">HADOOP-4575</a></td><td>security</td><td>Introduced independent HSFTP proxy server for authenticated access to clusters.</td>
-</tr>
-<tr>
-<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4661">HADOOP-4661</a></td><td>tools/distcp</td><td>Introduced distch tool for parallel ch{mod, own, grp}.</td>
-</tr>
-</table>
+<h1>Common</h1>
+
+<h2> Sub-task
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6213'>HADOOP-6213</a>] - Remove commons dependency on commons-cli2
+</li>
+</ul>
+
+<h2> Bug
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4626'>HADOOP-4626</a>] - API link in forrest doc should point to the same version of hadoop.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4674'>HADOOP-4674</a>] - hadoop fs -help should list detailed help info for the following commands: test, text, tail, stat & touchz
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4856'>HADOOP-4856</a>] - Document JobInitializationPoller configuration in capacity scheduler forrest documentation.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4931'>HADOOP-4931</a>] - Document TaskTracker's memory management functionality and CapacityScheduler's memory based scheduling.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5210'>HADOOP-5210</a>] - Reduce Task Progress shows > 100% when the total size of map outputs (for a single reducer) is high
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5213'>HADOOP-5213</a>] - BZip2CompressionOutputStream NullPointerException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5349'>HADOOP-5349</a>] - When the size required for a path is -1, LocalDirAllocator.getLocalPathForWrite fails with a DiskCheckerException when the disk it selects is bad.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5533'>HADOOP-5533</a>] - Recovery duration shown on the jobtracker webpage is inaccurate
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5539'>HADOOP-5539</a>] - o.a.h.mapred.Merger not maintaining map out compression on intermediate files
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5636'>HADOOP-5636</a>] - Job is left in Running state after a killJob
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5641'>HADOOP-5641</a>] - Possible NPE in CapacityScheduler's MemoryMatcher
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5646'>HADOOP-5646</a>] - TestQueueCapacities is failing Hudson tests for the last few builds
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5648'>HADOOP-5648</a>] - Not able to generate gridmix.jar on already compiled version of hadoop
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5654'>HADOOP-5654</a>] - TestReplicationPolicy.<init> fails on java.net.BindException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5655'>HADOOP-5655</a>] - TestMRServerPorts fails on java.net.BindException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5688'>HADOOP-5688</a>] - HftpFileSystem.getChecksum(..) does not work for the paths with scheme and authority
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5691'>HADOOP-5691</a>] - org.apache.hadoop.mapreduce.Reducer should not be abstract.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5711'>HADOOP-5711</a>] - Change Namenode file close log to info
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5718'>HADOOP-5718</a>] - Capacity Scheduler should not check for presence of default queue while starting up.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5719'>HADOOP-5719</a>] - Jobs failed during job initalization are never removed from Capacity Schedulers waiting list
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5736'>HADOOP-5736</a>] - Update CapacityScheduler documentation to reflect latest changes
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5746'>HADOOP-5746</a>] - Errors encountered in MROutputThread after the last map/reduce call can go undetected
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5796'>HADOOP-5796</a>] - DFS Write pipeline does not detect defective datanode correctly in some cases (HADOOP-3339)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5828'>HADOOP-5828</a>] - Use absolute path for JobTracker's mapred.local.dir in MiniMRCluster
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5850'>HADOOP-5850</a>] - map/reduce doesn't run jobs with 0 maps
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5863'>HADOOP-5863</a>] - mapred metrics shows negative count of waiting maps and reduces
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5869'>HADOOP-5869</a>] - TestQueueCapacitisues.apache.org/jjira/browse/HADOOP-OP-6017</a>] - NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6097'>HADOOP-6097</a>] - Multiple bugs w/ Hadoop archives
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6139'>HADOOP-6139</a>] - Incomplete help message is displayed for rm and rmr options.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6141'>HADOOP-6141</a>] - hadoop 0.20 branch "test-patch" is broken
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6145'>HADOOP-6145</a>] - No error message for deleting non-existant file or directory.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6215'>HADOOP-6215</a>] - fix GenericOptionParser to deal with -D with '=' in the value
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5726'>HADOOP-5726</a>] - Remove pre-emption from the capacity scheduler code base
+</li>
+</ul>
+
+<h2> New Feature
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-3315'>HADOOP-3315</a>] - New binary file format
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5714'>HADOOP-5714</a>] - Metric to show number of fs.exists (or number of getFileInfo) calls
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6080'>HADOOP-6080</a>] - Handling of Trash with quota
+</li>
+</ul>
+
+<h1>HDFS</h1>
+
+<h2> Bug
+</h2>
+<ul>
+ <li>[<a href='https://issues.apache.org/jira/browse/HDFS-26'>HDFS-26</a>] - HADOOP-5862 for version .20 (Namespace quota exceeded message unclear)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-167'>HDFS-167</a>] - DFSClient continues to retry indefinitely
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-438'>HDFS-438</a>] - Improve help message for quotas
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-442'>HDFS-442</a>] - dfsthroughput in test.jar throws NPE
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-485'>HDFS-485</a>] - error : too many fetch failures
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-495'>HDFS-495</a>] - Hadoop FSNamesystem startFileInternal() getLease() has bug
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-525'>HDFS-525</a>] - ListPathsServlet.java uses static SimpleDateFormat that has threading issues
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-504'>HDFS-504</a>] - HDFS updates the modification time of a file when the file is closed.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-527'>HDFS-527</a>] - Refactor DFSClient constructors
+</li>
+</ul>
+
+<h1>Map/Reduce</h1>
+
+<h2> Bug
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-2'>MAPREDUCE-2</a>] - ArrayOutOfIndex error in KeyFieldBasedPartitioner on empty key
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-18'>MAPREDUCE-18</a>] - Under load the shuffle sometimes gets incorrect data
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-40'>MAPREDUCE-40</a>] - Memory management variables need a backwards compatibility option after HADOOP-5881
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-112'>MAPREDUCE-112</a>] - Reduce Input Records and Reduce Output Records counters are not being set when using the new Mapreduce reducer API
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-124'>MAPREDUCE-124</a>] - When abortTask of OutputCommitter fails with an Exception for a map-only job, the task is marked as success
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-130'>MAPREDUCE-130</a>] - Delete the jobconf copy from the log directory of the JobTracker when the job is retired
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-179'>MAPREDUCE-179</a>] - setProgress not called for new RecordReaders
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-383'>MAPREDUCE-383</a>] - pipes combiner does not reset properly after a spill
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-421'>MAPREDUCE-421</a>] - mapred pipes might return exit code 0 even when failing
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-430'>MAPREDUCE-430</a>] - Task stuck in cleanup with OutOfMemoryErrors
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-565'>MAPREDUCE-565</a>] - Partitioner does not work with new API
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-657'>MAPREDUCE-657</a>] - CompletedJobStatusStore hardcodes filesystem to hdfs
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-735'>MAPREDUCE-735</a>] - ArrayIndexOutOfBoundsException is thrown by KeyFieldBasedPartitioner
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-745'>MAPREDUCE-745</a>] - TestRecoveryManager fails sometimes
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-796'>MAPREDUCE-796</a>] - Encountered "ClassCastException" on tasktracker while running wordcount with MultithreadedMapRunner
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-805'>MAPREDUCE-805</a>] - Deadlock in Jobtracker
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-806'>MAPREDUCE-806</a>] - WordCount example does not compile given the current instructions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-807'>MAPREDUCE-807</a>] - Stray user files in mapred.system.dir with permissions other than 777 can prevent the jobtracker from starting up.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-818'>MAPREDUCE-818</a>] - org.apache.hadoop.mapreduce.Counters.getGroup returns null if the group name doesnt exist.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-827'>MAPREDUCE-827</a>] - "hadoop job -status <jobid>" command should display job's completion status also.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-832'>MAPREDUCE-832</a>] - Too many WARN messages about deprecated memorty config variables in JobTacker log
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-834'>MAPREDUCE-834</a>] - When TaskTracker config use old memory management values its memory monitoring is diabled.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-838'>MAPREDUCE-838</a>] - Task succeeds even when committer.commitTask fails with IOException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-911'>MAPREDUCE-911</a>] - TestTaskFail fail sometimes
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-465'>MAPREDUCE-465</a>] - Deprecate org.apache.hadoop.mapred.lib.MultithreadedMapRunner
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-487'>MAPREDUCE-487</a>] - DBInputFormat support for Oracle
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-767'>MAPREDUCE-767</a>] - to remove mapreduce dependency on commons-cli2
+</li>
+</ul>
+
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