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<h1>Apache Hadoop Changelog</h1><section>
<h2><a name="Release_0.23.6_-_2013-02-06"></a>Release 0.23.6 - 2013-02-06</h2><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/YARN-80">YARN-80</a> </td>
<td align="left"> Support delay scheduling for node locality in MR2&#x2019;s capacity scheduler </td>
<td align="left">  Major </td>
<td align="left"> capacityscheduler </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Arun C Murthy </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8931">HADOOP-8931</a> </td>
<td align="left"> Add Java version to startup message </td>
<td align="left">  Trivial </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4811">MAPREDUCE-4811</a> </td>
<td align="left"> JobHistoryServer should show when it was started in WebUI About page </td>
<td align="left">  Minor </td>
<td align="left"> jobhistoryserver, 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/MAPREDUCE-4764">MAPREDUCE-4764</a> </td>
<td align="left"> repair test org.apache.hadoop.mapreduce.security.TestBinaryTokenFile </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Ivan A. Veselovsky </td>
<td align="left">  </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8992">HADOOP-8992</a> </td>
<td align="left"> Enhance unit-test coverage of class HarFileSystem </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Ivan A. Veselovsky </td>
<td align="left"> Ivan A. Veselovsky </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8561">HADOOP-8561</a> </td>
<td align="left"> Introduce HADOOP_PROXY_USER for secure impersonation in child hadoop client processes </td>
<td align="left">  Major </td>
<td align="left"> security </td>
<td align="left"> Luke Lu </td>
<td align="left"> Yu Gao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4845">MAPREDUCE-4845</a> </td>
<td align="left"> ClusterStatus.getMaxMemory() and getUsedMemory() exist in MR1 but not MR2 </td>
<td align="left">  Major </td>
<td align="left"> client </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-285">YARN-285</a> </td>
<td align="left"> RM should be able to provide a tracking link for apps that have already been purged </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Derek Dagit </td>
<td align="left"> Derek Dagit </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4899">MAPREDUCE-4899</a> </td>
<td align="left"> Provide a plugin to the Yarn Web App Proxy to generate tracking links for M/R appllications given the ID </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Derek Dagit </td>
<td align="left"> Derek Dagit </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4810">MAPREDUCE-4810</a> </td>
<td align="left"> Add admin command options for ApplicationMaster </td>
<td align="left">  Minor </td>
<td align="left"> applicationmaster </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Haifeng Chen </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-7868">HADOOP-7868</a> </td>
<td align="left"> Hadoop native fails to compile when default linker option is -Wl,&#x2013;as-needed </td>
<td align="left">  Major </td>
<td align="left"> native </td>
<td align="left"> James Page </td>
<td align="left"> Trevor Robinson </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2757">HDFS-2757</a> </td>
<td align="left"> Cannot read a local block that&#x2019;s being written to when using the local read short circuit </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Jean-Daniel Cryans </td>
<td align="left"> Jean-Daniel Cryans </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4186">HDFS-4186</a> </td>
<td align="left"> logSync() is called with the write lock held while releasing lease </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/HADOOP-9072">HADOOP-9072</a> </td>
<td align="left"> Hadoop-Common-0.23-Build Fails to build in Jenkins </td>
<td align="left">  Major </td>
<td align="left"> . </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-4825">MAPREDUCE-4825</a> </td>
<td align="left"> JobImpl.finished doesn&#x2019;t expect ERROR as a final job state </td>
<td align="left">  Major </td>
<td align="left"> mr-am </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-4817">MAPREDUCE-4817</a> </td>
<td align="left"> Hardcoded task ping timeout kills tasks localizing large amounts of data </td>
<td align="left">  Critical </td>
<td align="left"> applicationmaster, mr-am </td>
<td align="left"> Jason Lowe </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-4242">HDFS-4242</a> </td>
<td align="left"> Map.Entry is incorrectly used in LeaseManager </td>
<td align="left">  Major </td>
<td align="left"> namenode </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-9108">HADOOP-9108</a> </td>
<td align="left"> Add a method to clear terminateCalled to ExitUtil for test cases </td>
<td align="left">  Major </td>
<td align="left"> util </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-4233">HDFS-4233</a> </td>
<td align="left"> NN keeps serving even after no journals started while rolling edit </td>
<td align="left">  Blocker </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/YARN-251">YARN-251</a> </td>
<td align="left"> Proxy URI generation fails for blank tracking URIs </td>
<td align="left">  Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Tom White </td>
<td align="left"> Tom White </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4836">MAPREDUCE-4836</a> </td>
<td align="left"> Elapsed time for running tasks on AM web UI tasks page is 0 </td>
<td align="left">  Major </td>
<td align="left"> . </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/HDFS-4254">HDFS-4254</a> </td>
<td align="left"> testAllEditsDirsFailOnFlush makes subsequent test cases fail (0.23.6 only) </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/YARN-72">YARN-72</a> </td>
<td align="left"> NM should handle cleaning up containers when it shuts down </td>
<td align="left">  Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Hitesh Shah </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-258">YARN-258</a> </td>
<td align="left"> RM web page UI shows Invalid Date for start and finish times </td>
<td align="left">  Major </td>
<td align="left"> resourcemanager </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-266">YARN-266</a> </td>
<td align="left"> RM and JHS Web UIs are blank because AppsBlock is not escaping string properly </td>
<td align="left">  Critical </td>
<td align="left"> resourcemanager </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/MAPREDUCE-4861">MAPREDUCE-4861</a> </td>
<td align="left"> Cleanup: Remove unused mapreduce.security.token.DelegationTokenRenewal </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4856">MAPREDUCE-4856</a> </td>
<td align="left"> TestJobOutputCommitter uses same directory as TestJobCleanup </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9135">HADOOP-9135</a> </td>
<td align="left"> JniBasedUnixGroupsMappingWithFallback should log at debug rather than info during fallback </td>
<td align="left">  Trivial </td>
<td align="left"> security </td>
<td align="left"> Colin P. McCabe </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4315">HDFS-4315</a> </td>
<td align="left"> DNs with multiple BPs can have BPOfferServices fail to start due to unsynchronized map access </td>
<td align="left">  Major </td>
<td align="left"> datanode </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4232">HDFS-4232</a> </td>
<td align="left"> NN fails to write a fsimage with stale leases </td>
<td align="left">  Blocker </td>
<td align="left"> namenode </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-9152">HADOOP-9152</a> </td>
<td align="left"> HDFS can report negative DFS Used on clusters with very small amounts of data </td>
<td align="left">  Minor </td>
<td align="left"> fs </td>
<td align="left"> Brock Noland </td>
<td align="left"> Brock Noland </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-223">YARN-223</a> </td>
<td align="left"> Change processTree interface to work better with native code </td>
<td align="left">  Critical </td>
<td align="left"> . </td>
<td align="left"> Radim Kolar </td>
<td align="left"> Radim Kolar </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4895">MAPREDUCE-4895</a> </td>
<td align="left"> Fix compilation failure of org.apache.hadoop.mapred.gridmix.TestResourceUsageEmulators </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Dennis Y </td>
<td align="left"> Dennis Y </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9105">HADOOP-9105</a> </td>
<td align="left"> FsShell -moveFromLocal erroneously fails </td>
<td align="left">  Major </td>
<td align="left"> fs </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/MAPREDUCE-4842">MAPREDUCE-4842</a> </td>
<td align="left"> Shuffle race can hang reducer </td>
<td align="left">  Blocker </td>
<td align="left"> mrv2 </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Mariappan Asokan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4833">MAPREDUCE-4833</a> </td>
<td align="left"> Task can get stuck in FAIL_CONTAINER_CLEANUP </td>
<td align="left">  Critical </td>
<td align="left"> applicationmaster, mrv2 </td>
<td align="left"> Robert Joseph Evans </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-4890">MAPREDUCE-4890</a> </td>
<td align="left"> Invalid TaskImpl state transitions when task fails while speculating </td>
<td align="left">  Critical </td>
<td align="left"> mr-am </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/HADOOP-9169">HADOOP-9169</a> </td>
<td align="left"> Bring branch-0.23 ExitUtil up to same level as branch-2 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Robert Joseph Evans </td>
<td align="left"> Robert Joseph Evans </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4902">MAPREDUCE-4902</a> </td>
<td align="left"> Fix typo &#x201c;receievd&#x201d; should be &#x201c;received&#x201d; in log output </td>
<td align="left">  Trivial </td>
<td align="left"> . </td>
<td align="left"> Albert Chu </td>
<td align="left"> Albert Chu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-225">YARN-225</a> </td>
<td align="left"> Proxy Link in RM UI thows NPE in Secure mode </td>
<td align="left">  Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> Devaraj K </td>
<td align="left"> Devaraj K </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4813">MAPREDUCE-4813</a> </td>
<td align="left"> AM timing out during job commit </td>
<td align="left">  Critical </td>
<td align="left"> applicationmaster </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/YARN-293">YARN-293</a> </td>
<td align="left"> Node Manager leaks LocalizerRunner object for every Container </td>
<td align="left">  Critical </td>
<td align="left"> nodemanager </td>
<td align="left"> Devaraj K </td>
<td align="left"> Robert Joseph Evans </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4279">MAPREDUCE-4279</a> </td>
<td align="left"> getClusterStatus() fails with null pointer exception when running jobs in local mode </td>
<td align="left">  Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Rahul Jain </td>
<td align="left"> Devaraj K </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4270">HDFS-4270</a> </td>
<td align="left"> Replications of the highest priority should be allowed to choose a source datanode that has reached its max replication limit </td>
<td align="left">  Minor </td>
<td align="left"> namenode </td>
<td align="left"> Derek Dagit </td>
<td align="left"> Derek Dagit </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4832">MAPREDUCE-4832</a> </td>
<td align="left"> MR AM can get in a split brain situation </td>
<td align="left">  Critical </td>
<td align="left"> applicationmaster </td>
<td align="left"> Robert Joseph Evans </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-4894">MAPREDUCE-4894</a> </td>
<td align="left"> Renewal / cancellation of JobHistory tokens </td>
<td align="left">  Blocker </td>
<td align="left"> jobhistoryserver, mrv2 </td>
<td align="left"> Siddharth Seth </td>
<td align="left"> Siddharth Seth </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4819">MAPREDUCE-4819</a> </td>
<td align="left"> AM can rerun job after reporting final job status to the client </td>
<td align="left">  Blocker </td>
<td align="left"> mr-am </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Bikas Saha </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4913">MAPREDUCE-4913</a> </td>
<td align="left"> TestMRAppMaster#testMRAppMasterMissingStaging occasionally exits </td>
<td align="left">  Major </td>
<td align="left"> mr-am </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/YARN-170">YARN-170</a> </td>
<td align="left"> NodeManager stop() gets called twice on shutdown </td>
<td align="left">  Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9181">HADOOP-9181</a> </td>
<td align="left"> Set daemon flag for HttpServer&#x2019;s QueuedThreadPool </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Liang Xie </td>
<td align="left"> Liang Xie </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-320">YARN-320</a> </td>
<td align="left"> RM should always be able to renew its own tokens </td>
<td align="left">  Blocker </td>
<td align="left"> resourcemanager </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-325">YARN-325</a> </td>
<td align="left"> RM CapacityScheduler can deadlock when getQueueInfo() is called and a container is completing </td>
<td align="left">  Blocker </td>
<td align="left"> capacityscheduler </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Arun C Murthy </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4848">MAPREDUCE-4848</a> </td>
<td align="left"> TaskAttemptContext cast error during AM recovery </td>
<td align="left">  Major </td>
<td align="left"> mr-am </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Haifeng Chen </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9097">HADOOP-9097</a> </td>
<td align="left"> Maven RAT plugin is not checking all source files </td>
<td align="left">  Critical </td>
<td align="left"> build </td>
<td align="left"> Tom White </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-4385">HDFS-4385</a> </td>
<td align="left"> Maven RAT plugin is not checking all source files </td>
<td align="left">  Critical </td>
<td align="left"> build </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-4934">MAPREDUCE-4934</a> </td>
<td align="left"> Maven RAT plugin is not checking all source files </td>
<td align="left">  Critical </td>
<td align="left"> build </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/YARN-334">YARN-334</a> </td>
<td align="left"> Maven RAT plugin is not checking all source files </td>
<td align="left">  Critical </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-4678">MAPREDUCE-4678</a> </td>
<td align="left"> Running the Pentomino example with defaults throws java.lang.NegativeArraySizeException </td>
<td align="left">  Minor </td>
<td align="left"> examples </td>
<td align="left"> Chris McConnell </td>
<td align="left"> Chris McConnell </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4925">MAPREDUCE-4925</a> </td>
<td align="left"> The pentomino option parser may be buggy </td>
<td align="left">  Major </td>
<td align="left"> examples </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4921">MAPREDUCE-4921</a> </td>
<td align="left"> JobClient should acquire HS token with RM principal </td>
<td align="left">  Blocker </td>
<td align="left"> client </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/HDFS-4426">HDFS-4426</a> </td>
<td align="left"> Secondary namenode shuts down immediately after startup </td>
<td align="left">  Blocker </td>
<td align="left"> namenode </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-354">YARN-354</a> </td>
<td align="left"> WebAppProxyServer exits immediately after startup </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Liang Xie </td>
<td align="left"> Liang Xie </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9242">HADOOP-9242</a> </td>
<td align="left"> Duplicate surefire plugin config in hadoop-common </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Andrey Klochkov </td>
<td align="left"> Andrey Klochkov </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9255">HADOOP-9255</a> </td>
<td align="left"> relnotes.py missing last jira </td>
<td align="left">  Critical </td>
<td align="left"> scripts </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Thomas Graves </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/HADOOP-9038">HADOOP-9038</a> </td>
<td align="left"> provide unit-test coverage of class org.apache.hadoop.fs.LocalDirAllocator.AllocatorPerContext.PathIterator </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Ivan A. Veselovsky </td>
<td align="left"> Ivan A. Veselovsky </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9217">HADOOP-9217</a> </td>
<td align="left"> Print thread dumps when hadoop-common tests fail </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Andrey Klochkov </td>
<td align="left"> Andrey Klochkov </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-9020">HADOOP-9020</a> </td>
<td align="left"> Add a SASL PLAIN server </td>
<td align="left">  Major </td>
<td align="left"> ipc, 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-204">YARN-204</a> </td>
<td align="left"> test coverage for org.apache.hadoop.tools </td>
<td align="left">  Major </td>
<td align="left"> applications </td>
<td align="left"> Aleksey Gorshkov </td>
<td align="left"> Aleksey Gorshkov </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4247">HDFS-4247</a> </td>
<td align="left"> saveNamespace should be tolerant of dangling lease </td>
<td align="left">  Blocker </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/HDFS-4248">HDFS-4248</a> </td>
<td align="left"> Renames may remove file leases </td>
<td align="left">  Blocker </td>
<td align="left"> namenode </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/YARN-280">YARN-280</a> </td>
<td align="left"> RM does not reject app submission with invalid tokens </td>
<td align="left">  Major </td>
<td align="left"> resourcemanager </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-50">YARN-50</a> </td>
<td align="left"> Implement renewal / cancellation of Delegation Tokens </td>
<td align="left">  Blocker </td>
<td align="left"> . </td>
<td align="left"> Siddharth Seth </td>
<td align="left"> Siddharth Seth </td></tr>
</tbody>
</table></section><section>
<h3><a name="OTHER:"></a>OTHER:</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-8427">HADOOP-8427</a> </td>
<td align="left"> Convert Forrest docs to APT, incremental </td>
<td align="left">  Major </td>
<td align="left"> documentation </td>
<td align="left"> Eli Collins </td>
<td align="left"> Andy Isaacson </td></tr>
</tbody>
</table></section></section>
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