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<h1>Apache Hadoop Changelog</h1><section>
<h2><a name="Release_0.23.10_-_2013-12-09"></a>Release 0.23.10 - 2013-12-09</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/YARN-707">YARN-707</a> </td>
<td align="left"> Add user info in the YARN ClientToken </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Bikas Saha </td>
<td align="left"> Jason Lowe </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/HDFS-5010">HDFS-5010</a> </td>
<td align="left"> Reduce the frequency of getCurrentUser() calls from namenode </td>
<td align="left"> Major </td>
<td align="left"> namenode, performance </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-1981">MAPREDUCE-1981</a> </td>
<td align="left"> Improve getSplits performance by using listLocatedStatus </td>
<td align="left"> Major </td>
<td align="left"> job submission </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/YARN-985">YARN-985</a> </td>
<td align="left"> Nodemanager should log where a resource was localized </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9686">HADOOP-9686</a> </td>
<td align="left"> Easy access to final parameters in Configuration </td>
<td align="left"> Major </td>
<td align="left"> conf </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8704">HADOOP-8704</a> </td>
<td align="left"> add request logging to jetty/httpserver </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5640">MAPREDUCE-5640</a> </td>
<td align="left"> Rename TestLineRecordReader in jobclient module </td>
<td align="left"> Trivial </td>
<td align="left"> test </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </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/HDFS-3020">HDFS-3020</a> </td>
<td align="left"> Auto-logSync based on edit log buffer size broken </td>
<td align="left"> Critical </td>
<td align="left"> namenode </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4579">MAPREDUCE-4579</a> </td>
<td align="left"> TestTaskAttempt fails jdk7 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Thomas Graves </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3970">HDFS-3970</a> </td>
<td align="left"> BlockPoolSliceStorage#doRollback(..) should use BlockPoolSliceStorage instead of DataStorage to read prev version file. </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Vinayakumar B </td>
<td align="left"> Vinayakumar B </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4482">HDFS-4482</a> </td>
<td align="left"> ReplicationMonitor thread can exit with NPE due to the race between delete and replication of same file. </td>
<td align="left"> Blocker </td>
<td align="left"> namenode </td>
<td align="left"> Uma Maheswara Rao G </td>
<td align="left"> Uma Maheswara Rao G </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4571">MAPREDUCE-4571</a> </td>
<td align="left"> TestHsWebServicesJobs fails on jdk7 </td>
<td align="left"> Major </td>
<td align="left"> webapps </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Thomas Graves </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4716">MAPREDUCE-4716</a> </td>
<td align="left"> TestHsWebServicesJobsQuery.testJobsQueryStateInvalid fails with jdk7 </td>
<td align="left"> Major </td>
<td align="left"> jobhistoryserver </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Thomas Graves </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4943">HDFS-4943</a> </td>
<td align="left"> WebHdfsFileSystem does not work when original file path has encoded chars </td>
<td align="left"> Minor </td>
<td align="left"> webhdfs </td>
<td align="left"> Jerry He </td>
<td align="left"> Jerry He </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3193">MAPREDUCE-3193</a> </td>
<td align="left"> FileInputFormat doesn&#x2019;t read files recursively in the input path dir </td>
<td align="left"> Major </td>
<td align="left"> mrv1, mrv2 </td>
<td align="left"> Ramgopal N </td>
<td align="left"> Devaraj K </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4984">HDFS-4984</a> </td>
<td align="left"> Incorrect Quota counting in INodeFile </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4972">HDFS-4972</a> </td>
<td align="left"> [branch-0.23] permission check and operation are done in a separate lock for getBlockLocations() </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5380">MAPREDUCE-5380</a> </td>
<td align="left"> Invalid mapred command should return non-zero exit code </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Stephen Chu </td>
<td align="left"> Stephen Chu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4998">HDFS-4998</a> </td>
<td align="left"> TestUnderReplicatedBlocks fails intermittently </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5317">MAPREDUCE-5317</a> </td>
<td align="left"> Stale files left behind for failed jobs </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-949">YARN-949</a> </td>
<td align="left"> Failed log aggregation can leave a file open. </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5251">MAPREDUCE-5251</a> </td>
<td align="left"> Reducer should not implicate map attempt if it has insufficient space to fetch map output </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Ashwin Shankar </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5419">MAPREDUCE-5419</a> </td>
<td align="left"> TestSlive is getting FileNotFound Exception </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Robert Parker </td>
<td align="left"> Robert Parker </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5028">HDFS-5028</a> </td>
<td align="left"> LeaseRenewer throw java.util.ConcurrentModificationException when timeout </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> yunjiong zhao </td>
<td align="left"> yunjiong zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5440">MAPREDUCE-5440</a> </td>
<td align="left"> TestCopyCommitter Fails on JDK7 </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Robert Parker </td>
<td align="left"> Robert Parker </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9476">HADOOP-9476</a> </td>
<td align="left"> Some test cases in TestUserGroupInformation fail if ran after testSetLoginUser. </td>
<td align="left"> Major </td>
<td align="left"> security, test </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Robert Parker </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5425">MAPREDUCE-5425</a> </td>
<td align="left"> Junit in TestJobHistoryServer failing in jdk 7 </td>
<td align="left"> Major </td>
<td align="left"> jobhistoryserver </td>
<td align="left"> Ashwin Shankar </td>
<td align="left"> Robert Parker </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5047">HDFS-5047</a> </td>
<td align="left"> Supress logging of full stack trace of quota and lease exceptions </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Robert Parker </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4993">HDFS-4993</a> </td>
<td align="left"> fsck can fail if a file is renamed or deleted </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Robert Parker </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9757">HADOOP-9757</a> </td>
<td align="left"> Har metadata cache can grow without limit </td>
<td align="left"> Major </td>
<td align="left"> fs </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Cristina L. Abad </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1036">YARN-1036</a> </td>
<td align="left"> Distributed Cache gives inconsistent result if cache files get deleted from task tracker </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-337">YARN-337</a> </td>
<td align="left"> RM handles killed application tracking URL poorly </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5001">MAPREDUCE-5001</a> </td>
<td align="left"> LocalJobRunner has race condition resulting in job failures </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Brock Noland </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4994">HDFS-4994</a> </td>
<td align="left"> Audit log getContentSummary() calls </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Robert Parker </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5468">MAPREDUCE-5468</a> </td>
<td align="left"> AM recovery does not work for map only jobs </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Yesha Vora </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/HDFS-4329">HDFS-4329</a> </td>
<td align="left"> DFSShell issues with directories with spaces in name </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Andy Isaacson </td>
<td align="left"> Cristina L. Abad </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1101">YARN-1101</a> </td>
<td align="left"> Active nodes can be decremented below 0 </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Robert Parker </td>
<td align="left"> Robert Parker </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5475">MAPREDUCE-5475</a> </td>
<td align="left"> MRClientService does not verify ACLs properly </td>
<td align="left"> Blocker </td>
<td align="left"> mr-am, mrv2 </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5414">MAPREDUCE-5414</a> </td>
<td align="left"> TestTaskAttempt fails jdk7 with NullPointerException </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Nemon Lou </td>
<td align="left"> Nemon Lou </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1176">YARN-1176</a> </td>
<td align="left"> RM web services ClusterMetricsInfo total nodes doesn&#x2019;t include unhealthy nodes </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5504">MAPREDUCE-5504</a> </td>
<td align="left"> mapred queue -info inconsistent with types </td>
<td align="left"> Major </td>
<td align="left"> client </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Kousuke Saruta </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1243">YARN-1243</a> </td>
<td align="left"> ResourceManager: Error in handling event type NODE_UPDATE to the scheduler - NPE at SchedulerApp.java:411 </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler </td>
<td align="left"> Sanjay Upadhyay </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5543">MAPREDUCE-5543</a> </td>
<td align="left"> In-memory map outputs can be leaked after shuffle completes in 0.23 </td>
<td align="left"> Blocker </td>
<td align="left"> mrv2 </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5513">MAPREDUCE-5513</a> </td>
<td align="left"> ConcurrentModificationException in JobControl </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Robert Parker </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5569">MAPREDUCE-5569</a> </td>
<td align="left"> FloatSplitter is not generating correct splits </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Nathan Roberts </td>
<td align="left"> Nathan Roberts </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-155">YARN-155</a> </td>
<td align="left"> TestAppManager intermittently fails with jdk7 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Thomas Graves </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5585">MAPREDUCE-5585</a> </td>
<td align="left"> TestCopyCommitter#testNoCommitAction Fails on JDK7 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5586">MAPREDUCE-5586</a> </td>
<td align="left"> TestCopyMapper#testCopyFailOnBlockSizeDifference fails when run from hadoop-tools/hadoop-distcp directory </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5346">HDFS-5346</a> </td>
<td align="left"> Avoid unnecessary call to getNumLiveDataNodes() for each block during IBR processing </td>
<td align="left"> Major </td>
<td align="left"> namenode, performance </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5587">MAPREDUCE-5587</a> </td>
<td align="left"> TestTextOutputFormat fails on JDK7 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5561">MAPREDUCE-5561</a> </td>
<td align="left"> org.apache.hadoop.mapreduce.v2.app.job.impl.TestJobImpl testcase failing on trunk </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Cindy Li </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1031">YARN-1031</a> </td>
<td align="left"> JQuery UI components reference external css in branch-23 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1386">YARN-1386</a> </td>
<td align="left"> NodeManager mistakenly loses resources and relocalizes them </td>
<td align="left"> Critical </td>
<td align="left"> nodemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10091">HADOOP-10091</a> </td>
<td align="left"> Job with a har archive as input fails on 0.23 </td>
<td align="left"> Blocker </td>
<td align="left"> fs </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jason Lowe </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4995">HDFS-4995</a> </td>
<td align="left"> Make getContentSummary() less expensive </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5438">HDFS-5438</a> </td>
<td align="left"> Flaws in block report processing can cause data loss </td>
<td align="left"> Critical </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5373">MAPREDUCE-5373</a> </td>
<td align="left"> TestFetchFailure.testFetchFailureMultipleReduces could fail intermittently </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Chuan Liu </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-1419">YARN-1419</a> </td>
<td align="left"> TestFifoScheduler.testAppAttemptMetrics fails intermittently under jdk7 </td>
<td align="left"> Minor </td>
<td align="left"> scheduler </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5557">HDFS-5557</a> </td>
<td align="left"> Write pipeline recovery for the last packet in the block may cause rejection of valid replicas </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5526">HDFS-5526</a> </td>
<td align="left"> Datanode cannot roll back to previous layout version </td>
<td align="left"> Blocker </td>
<td align="left"> datanode </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5558">HDFS-5558</a> </td>
<td align="left"> LeaseManager monitor thread can crash if the last block is complete but another block is not. </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5357">HDFS-5357</a> </td>
<td align="left"> TestFileSystemAccessService failures in JDK7 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Robert Parker </td>
<td align="left"> Robert Parker </td></tr>
</tbody>
</table></section><section>
<h3><a name="TESTS:"></a>TESTS:</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/YARN-1119">YARN-1119</a> </td>
<td align="left"> Add ClusterMetrics checks to tho TestRMNodeTransitions tests </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Robert Parker </td>
<td align="left"> Mit Desai </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5610">MAPREDUCE-5610</a> </td>
<td align="left"> TestSleepJob fails in jdk7 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </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-9748">HADOOP-9748</a> </td>
<td align="left"> Reduce blocking on UGI.ensureInitialized </td>
<td align="left"> Critical </td>
<td align="left"> security </td>
<td align="left"> Daryn Sharp </td>
<td align="left"> Daryn Sharp </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-573">YARN-573</a> </td>
<td align="left"> Shared data structures in Public Localizer and Private Localizer are not Thread safe. </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Omkar Vinit Joshi </td>
<td align="left"> Omkar Vinit Joshi </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5239">HDFS-5239</a> </td>
<td align="left"> Allow FSNamesystem lock fairness to be configurable </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Daryn Sharp </td>
<td align="left"> Daryn Sharp </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9956">HADOOP-9956</a> </td>
<td align="left"> RPC listener inefficiently assigns connections to readers </td>
<td align="left"> Major </td>
<td align="left"> ipc </td>
<td align="left"> Daryn Sharp </td>
<td align="left"> Daryn Sharp </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9955">HADOOP-9955</a> </td>
<td align="left"> RPC idle connection closing is extremely inefficient </td>
<td align="left"> Major </td>
<td align="left"> ipc </td>
<td align="left"> Daryn Sharp </td>
<td align="left"> Daryn Sharp </td></tr>
</tbody>
</table></section></section>
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