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                       <h5>YARN</h5>
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                       <h5>YARN REST APIs</h5>
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                       <h5>YARN Service</h5>
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                       <h5>Hadoop Compatible File Systems</h5>
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                       <h5>Auth</h5>
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<h1>Apache Hadoop Changelog</h1><section>
<h2><a name="Release_0.20.1_-_2009-09-01"></a>Release 0.20.1 - 2009-09-01</h2><section>
<h3><a name="INCOMPATIBLE_CHANGES:"></a>INCOMPATIBLE CHANGES:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5726">HADOOP-5726</a> </td>
<td align="left"> Remove pre-emption from the capacity scheduler code base </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Hemanth Yamijala </td>
<td align="left"> rahul k singh </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5881">HADOOP-5881</a> </td>
<td align="left"> Simplify configuration related to task-memory-monitoring and memory-based scheduling </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Vinod Kumar Vavilapalli </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
</tbody>
</table></section><section>
<h3><a name="NEW_FEATURES:"></a>NEW FEATURES:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5714">HADOOP-5714</a> </td>
<td align="left"> Metric to show number of fs.exists (or number of getFileInfo) calls </td>
<td align="left">  Minor </td>
<td align="left"> metrics </td>
<td align="left"> Koji Noguchi </td>
<td align="left"> Jakob Homan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-3315">HADOOP-3315</a> </td>
<td align="left"> New binary file format </td>
<td align="left">  Major </td>
<td align="left"> io </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Hong Tang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6080">HADOOP-6080</a> </td>
<td align="left"> Handling of  Trash with quota </td>
<td align="left">  Major </td>
<td align="left"> fs </td>
<td align="left"> Koji Noguchi </td>
<td align="left"> Jakob Homan </td></tr>
</tbody>
</table></section><section>
<h3><a name="IMPROVEMENTS:"></a>IMPROVEMENTS:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-465">MAPREDUCE-465</a> </td>
<td align="left"> Deprecate org.apache.hadoop.mapred.lib.MultithreadedMapRunner </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-527">HDFS-527</a> </td>
<td align="left"> Refactor DFSClient constructors </td>
<td align="left">  Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-767">MAPREDUCE-767</a> </td>
<td align="left"> to remove mapreduce dependency on commons-cli2 </td>
<td align="left">  Major </td>
<td align="left"> contrib/streaming </td>
<td align="left"> Giridharan Kesavan </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-635">HDFS-635</a> </td>
<td align="left"> HDFS Project page does not show 0.20.1 documentation/release information. </td>
<td align="left">  Major </td>
<td align="left"> documentation </td>
<td align="left"> Andy Sautins </td>
<td align="left">  </td></tr>
</tbody>
</table></section><section>
<h3><a name="BUG_FIXES:"></a>BUG FIXES:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5210">HADOOP-5210</a> </td>
<td align="left"> Reduce Task Progress shows &gt; 100% when the total size of map outputs (for a single reducer) is high </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Jothi Padmanabhan </td>
<td align="left"> Ravi Gummadi </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5654">HADOOP-5654</a> </td>
<td align="left"> TestReplicationPolicy.&lt;init&gt; fails on java.net.BindException </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Hairong Kuang </td>
<td align="left"> Hairong Kuang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5655">HADOOP-5655</a> </td>
<td align="left"> TestMRServerPorts fails on java.net.BindException </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Hairong Kuang </td>
<td align="left"> Devaraj Das </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5533">HADOOP-5533</a> </td>
<td align="left"> Recovery duration shown on the jobtracker webpage is inaccurate </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5646">HADOOP-5646</a> </td>
<td align="left"> TestQueueCapacities is failing Hudson tests for the last few builds </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Jothi Padmanabhan </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5691">HADOOP-5691</a> </td>
<td align="left"> org.apache.hadoop.mapreduce.Reducer should not be abstract. </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5688">HADOOP-5688</a> </td>
<td align="left"> HftpFileSystem.getChecksum(..) does not work for the paths with scheme and authority </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-4674">HADOOP-4674</a> </td>
<td align="left"> hadoop fs -help should list detailed help info for the following commands: test, text, tail, stat &amp; touchz </td>
<td align="left">  Trivial </td>
<td align="left"> fs </td>
<td align="left"> David NeSmith </td>
<td align="left"> Ravi Phulari </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5711">HADOOP-5711</a> </td>
<td align="left"> Change Namenode file close log to info </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5213">HADOOP-5213</a> </td>
<td align="left"> BZip2CompressionOutputStream NullPointerException </td>
<td align="left">  Blocker </td>
<td align="left"> io </td>
<td align="left"> Zheng Shao </td>
<td align="left"> Zheng Shao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5736">HADOOP-5736</a> </td>
<td align="left"> Update CapacityScheduler documentation to reflect latest changes </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Sreekanth Ramakrishnan </td>
<td align="left"> Sreekanth Ramakrishnan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5718">HADOOP-5718</a> </td>
<td align="left"> Capacity Scheduler should not check for presence of default queue while starting up. </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Sreekanth Ramakrishnan </td>
<td align="left"> Sreekanth Ramakrishnan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5719">HADOOP-5719</a> </td>
<td align="left"> Jobs failed during job initalization are never removed from Capacity Schedulers waiting list </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Sreekanth Ramakrishnan </td>
<td align="left"> Sreekanth Ramakrishnan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5349">HADOOP-5349</a> </td>
<td align="left"> When the size required for a path is -1, LocalDirAllocator.getLocalPathForWrite fails with a DiskCheckerException when the disk it selects is bad. </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Vinod Kumar Vavilapalli </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5636">HADOOP-5636</a> </td>
<td align="left"> Job is left in Running state after a killJob </td>
<td align="left">  Critical </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5641">HADOOP-5641</a> </td>
<td align="left"> Possible NPE in CapacityScheduler&#x2019;s MemoryMatcher </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Vinod Kumar Vavilapalli </td>
<td align="left"> Hemanth Yamijala </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5828">HADOOP-5828</a> </td>
<td align="left"> Use absolute path for JobTracker&#x2019;s mapred.local.dir in MiniMRCluster </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Hemanth Yamijala </td>
<td align="left"> Hemanth Yamijala </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5850">HADOOP-5850</a> </td>
<td align="left"> map/reduce doesn&#x2019;t run jobs with 0 maps </td>
<td align="left">  Critical </td>
<td align="left"> . </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-4626">HADOOP-4626</a> </td>
<td align="left"> API link in forrest doc should point to the same version of hadoop. </td>
<td align="left">  Minor </td>
<td align="left"> documentation </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5883">HADOOP-5883</a> </td>
<td align="left"> TaskMemoryMonitorThread might shoot down tasks even if their processes momentarily exceed the requested memory </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Hemanth Yamijala </td>
<td align="left"> Hemanth Yamijala </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5539">HADOOP-5539</a> </td>
<td align="left"> o.a.h.mapred.Merger not maintaining map out compression on intermediate files </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Billy Pearson </td>
<td align="left"> Jothi Padmanabhan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5932">HADOOP-5932</a> </td>
<td align="left"> MemoryMatcher logs 0 as freeMemOnTT even though there are free slots available on TaskTraker </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Karam Singh </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5951">HADOOP-5951</a> </td>
<td align="left"> StorageInfo needs Apache license header. </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Suresh Srinivas </td>
<td align="left"> Suresh Srinivas </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5648">HADOOP-5648</a> </td>
<td align="left"> Not able to generate gridmix.jar on already compiled version of hadoop </td>
<td align="left">  Major </td>
<td align="left"> benchmarks </td>
<td align="left"> Suman Sehgal </td>
<td align="left"> Giridharan Kesavan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5908">HADOOP-5908</a> </td>
<td align="left"> ArithmeticException in heartbeats with zero map jobs </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Vinod Kumar Vavilapalli </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5924">HADOOP-5924</a> </td>
<td align="left"> JT fails to recover the jobs after restart after HADOOP:4372 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Ramya Sunil </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5882">HADOOP-5882</a> </td>
<td align="left"> Progress is not updated when the New Reducer is running reduce phase </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Jothi Padmanabhan </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5746">HADOOP-5746</a> </td>
<td align="left"> Errors encountered in MROutputThread after the last map/reduce call can go undetected </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Devaraj Das </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5884">HADOOP-5884</a> </td>
<td align="left"> Capacity scheduler should account high memory jobs as using more capacity of the queue </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Hemanth Yamijala </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5937">HADOOP-5937</a> </td>
<td align="left"> Correct  info message  &#x201c;Use hadoop dfs -safemode option&#x201d;  to  &quot; Use hdfs dfsadmin -safemode option&quot;  . </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Ravi Phulari </td>
<td align="left"> Ravi Phulari </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5921">HADOOP-5921</a> </td>
<td align="left"> JobTracker does not come up because of NotReplicatedYetException </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6017">HADOOP-6017</a> </td>
<td align="left"> NameNode and SecondaryNameNode fail to restart because of abnormal filenames. </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Raghu Angadi </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5920">HADOOP-5920</a> </td>
<td align="left"> TestJobHistory fails some times. </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-26">HDFS-26</a> </td>
<td align="left">    HADOOP-5862 for version .20  (Namespace quota exceeded message unclear) </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Boris Shkolnik </td>
<td align="left"> Boris Shkolnik </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-438">HDFS-438</a> </td>
<td align="left"> Improve help message for quotas </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Raghu Angadi </td>
<td align="left"> Raghu Angadi </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2">MAPREDUCE-2</a> </td>
<td align="left"> ArrayOutOfIndex error in KeyFieldBasedPartitioner on empty key </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-130">MAPREDUCE-130</a> </td>
<td align="left"> Delete the jobconf copy from the log directory of the JobTracker when the job is retired </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Devaraj Das </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-657">MAPREDUCE-657</a> </td>
<td align="left"> CompletedJobStatusStore hardcodes filesystem to hdfs </td>
<td align="left">  Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-179">MAPREDUCE-179</a> </td>
<td align="left"> setProgress not called for new RecordReaders </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Chris Douglas </td>
<td align="left"> Chris Douglas </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-124">MAPREDUCE-124</a> </td>
<td align="left"> When abortTask of OutputCommitter fails with an Exception for a map-only job, the task is marked as success </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Jothi Padmanabhan </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6139">HADOOP-6139</a> </td>
<td align="left"> Incomplete help message is displayed for rm and rmr options. </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Suman Sehgal </td>
<td align="left"> Jakob Homan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6141">HADOOP-6141</a> </td>
<td align="left"> hadoop 0.20 branch &#x201c;test-patch&#x201d; is broken </td>
<td align="left">  Major </td>
<td align="left"> build </td>
<td align="left"> Hong Tang </td>
<td align="left"> Hong Tang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6145">HADOOP-6145</a> </td>
<td align="left"> No error message for deleting non-existant file or directory. </td>
<td align="left">  Major </td>
<td align="left"> fs </td>
<td align="left"> Suman Sehgal </td>
<td align="left"> Jakob Homan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-565">MAPREDUCE-565</a> </td>
<td align="left"> Partitioner does not work with new API </td>
<td align="left">  Blocker </td>
<td align="left"> task </td>
<td align="left"> Jothi Padmanabhan </td>
<td align="left"> Owen O&#x2019;Malley </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-18">MAPREDUCE-18</a> </td>
<td align="left"> Under load the shuffle sometimes gets incorrect data </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Ravi Gummadi </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-735">MAPREDUCE-735</a> </td>
<td align="left"> ArrayIndexOutOfBoundsException is thrown by KeyFieldBasedPartitioner </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Suman Sehgal </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-383">MAPREDUCE-383</a> </td>
<td align="left"> pipes combiner does not reset properly after a spill </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Christian Kunz </td>
<td align="left"> Christian Kunz </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-40">MAPREDUCE-40</a> </td>
<td align="left"> Memory management variables need a backwards compatibility option after HADOOP-5881 </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Hemanth Yamijala </td>
<td align="left"> rahul k singh </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-796">MAPREDUCE-796</a> </td>
<td align="left"> Encountered &#x201c;ClassCastException&#x201d; on tasktracker while running wordcount with MultithreadedMapRunner </td>
<td align="left">  Major </td>
<td align="left"> examples </td>
<td align="left"> Suman Sehgal </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-838">MAPREDUCE-838</a> </td>
<td align="left"> Task succeeds even when committer.commitTask fails with IOException </td>
<td align="left">  Blocker </td>
<td align="left"> task </td>
<td align="left"> Koji Noguchi </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-805">MAPREDUCE-805</a> </td>
<td align="left"> Deadlock in Jobtracker </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Michael Tamm </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-167">HDFS-167</a> </td>
<td align="left"> DFSClient continues to retry indefinitely </td>
<td align="left">  Minor </td>
<td align="left"> hdfs-client </td>
<td align="left"> Derek Wollenstein </td>
<td align="left"> Bill Zeller </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-832">MAPREDUCE-832</a> </td>
<td align="left"> Too many WARN messages about deprecated memorty config variables in JobTacker log </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Karam Singh </td>
<td align="left"> rahul k singh </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-745">MAPREDUCE-745</a> </td>
<td align="left"> TestRecoveryManager fails sometimes </td>
<td align="left">  Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-834">MAPREDUCE-834</a> </td>
<td align="left"> When TaskTracker config use old memory management values its memory monitoring is diabled. </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Karam Singh </td>
<td align="left"> Sreekanth Ramakrishnan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-818">MAPREDUCE-818</a> </td>
<td align="left"> org.apache.hadoop.mapreduce.Counters.getGroup returns null if the group name doesnt exist. </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-807">MAPREDUCE-807</a> </td>
<td align="left"> Stray user files in mapred.system.dir with permissions other than 777 can prevent the jobtracker from starting up. </td>
<td align="left">  Blocker </td>
<td align="left"> jobtracker </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-430">MAPREDUCE-430</a> </td>
<td align="left"> Task stuck in cleanup with OutOfMemoryErrors </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6215">HADOOP-6215</a> </td>
<td align="left"> fix GenericOptionParser to deal with -D with &#x2018;=&#x2019; in the value </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-421">MAPREDUCE-421</a> </td>
<td align="left"> mapred pipes might return exit code 0 even when failing </td>
<td align="left">  Major </td>
<td align="left"> pipes </td>
<td align="left"> Christian Kunz </td>
<td align="left"> Christian Kunz </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-525">HDFS-525</a> </td>
<td align="left"> ListPathsServlet.java uses static SimpleDateFormat that has threading issues </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> Suresh Srinivas </td>
<td align="left"> Suresh Srinivas </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-911">MAPREDUCE-911</a> </td>
<td align="left"> TestTaskFail fail sometimes </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-687">MAPREDUCE-687</a> </td>
<td align="left"> TestMiniMRMapRedDebugScript fails sometimes </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-924">MAPREDUCE-924</a> </td>
<td align="left"> TestPipes must not directly invoke &#x2018;main&#x2019; of pipes as an exit from main could cause the testcase to crash. </td>
<td align="left">  Major </td>
<td align="left"> pipes </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Amareshwari Sriramadasu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-1022">HDFS-1022</a> </td>
<td align="left"> Merge under-10-min tests specs into one file </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Erik Steffl </td>
<td align="left"> Erik Steffl </td></tr>
</tbody>
</table></section><section>
<h3><a name="SUB-TASKS:"></a>SUB-TASKS:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6213">HADOOP-6213</a> </td>
<td align="left"> Remove commons dependency on commons-cli2 </td>
<td align="left">  Blocker </td>
<td align="left"> util </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
</tbody>
</table></section></section>
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