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<h1>Apache Hadoop Changelog</h1><section>
<h2><a name="Release_0.23.7_-_2013-04-18"></a>Release 0.23.7 - 2013-04-18</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/HDFS-395">HDFS-395</a> </td>
<td align="left"> DFS Scalability: Incremental block reports </td>
<td align="left"> Major </td>
<td align="left"> datanode, namenode </td>
<td align="left"> dhruba borthakur </td>
<td align="left"> Tomasz Nykiel </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-9209">HADOOP-9209</a> </td>
<td align="left"> Add shell command to dump file checksums </td>
<td align="left"> Major </td>
<td align="left"> fs, tools </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </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/HADOOP-7358">HADOOP-7358</a> </td>
<td align="left"> Improve log levels when exceptions caught in RPC handler </td>
<td align="left"> Minor </td>
<td align="left"> ipc </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/HADOOP-7886">HADOOP-7886</a> </td>
<td align="left"> Add toString to FileStatus </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Jakob Homan </td>
<td align="left"> SreeHari </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8214">HADOOP-8214</a> </td>
<td align="left"> make hadoop script recognize a full set of deprecated commands </td>
<td align="left"> Major </td>
<td align="left"> scripts </td>
<td align="left"> Roman Shaposhnik </td>
<td align="left"> Roman Shaposhnik </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8711">HADOOP-8711</a> </td>
<td align="left"> provide an option for IPC server users to avoid printing stack information for certain exceptions </td>
<td align="left"> Major </td>
<td align="left"> ipc </td>
<td align="left"> Brandon Li </td>
<td align="left"> Brandon Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3817">HDFS-3817</a> </td>
<td align="left"> avoid printing stack information for SafeModeException </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Brandon Li </td>
<td align="left"> Brandon Li </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8075">HADOOP-8075</a> </td>
<td align="left"> Lower native-hadoop library log from info to debug </td>
<td align="left"> Major </td>
<td align="left"> native </td>
<td align="left"> Eli Collins </td>
<td align="left"> H&#x131;z&#x131;r Sefa &#x130;rken </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9147">HADOOP-9147</a> </td>
<td align="left"> Add missing fields to FIleStatus.toString </td>
<td align="left"> Trivial </td>
<td align="left"> . </td>
<td align="left"> Jonathan Allen </td>
<td align="left"> Jonathan Allen </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4907">MAPREDUCE-4907</a> </td>
<td align="left"> TrackerDistributedCacheManager issues too many getFileStatus calls </td>
<td align="left"> Major </td>
<td align="left"> mrv1, tasktracker </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9216">HADOOP-9216</a> </td>
<td align="left"> CompressionCodecFactory#getCodecClasses should trim the result of parsing by Configuration. </td>
<td align="left"> Major </td>
<td align="left"> io </td>
<td align="left"> Tsuyoshi Ozawa </td>
<td align="left"> Tsuyoshi Ozawa </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8849">HADOOP-8849</a> </td>
<td align="left"> FileUtil#fullyDelete should grant the target directories +rwx permissions before trying to delete them </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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4458">MAPREDUCE-4458</a> </td>
<td align="left"> Warn if java.library.path is used for AM or Task </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Robert Joseph Evans </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-4949">MAPREDUCE-4949</a> </td>
<td align="left"> Enable multiple pi jobs to run in parallel </td>
<td align="left"> Minor </td>
<td align="left"> examples </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9247">HADOOP-9247</a> </td>
<td align="left"> parametrize Clover &#x201c;generateXxx&#x201d; properties to make them re-definable via -D in mvn calls </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/MAPREDUCE-4822">MAPREDUCE-4822</a> </td>
<td align="left"> Unnecessary conversions in History Events </td>
<td align="left"> Trivial </td>
<td align="left"> jobhistoryserver </td>
<td align="left"> Robert Joseph Evans </td>
<td align="left"> Chu Tong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4989">MAPREDUCE-4989</a> </td>
<td align="left"> JSONify DataTables input data for Attempts page </td>
<td align="left"> Major </td>
<td align="left"> jobhistoryserver, mr-am </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-249">YARN-249</a> </td>
<td align="left"> Capacity Scheduler web page should show list of active users per queue like it used to (in 1.x) </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler </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/HADOOP-9336">HADOOP-9336</a> </td>
<td align="left"> Allow UGI of current connection to be queried </td>
<td align="left"> Critical </td>
<td align="left"> ipc </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-9352">HADOOP-9352</a> </td>
<td align="left"> Expose UGI.setLoginUser for tests </td>
<td align="left"> Major </td>
<td align="left"> security </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-8462">HADOOP-8462</a> </td>
<td align="left"> Native-code implementation of bzip2 codec </td>
<td align="left"> Major </td>
<td align="left"> io </td>
<td align="left"> Govind Kamat </td>
<td align="left"> Govind Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9374">HADOOP-9374</a> </td>
<td align="left"> Add tokens from -tokenCacheFile into UGI </td>
<td align="left"> Major </td>
<td align="left"> security </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-443">YARN-443</a> </td>
<td align="left"> allow OS scheduling priority of NM to be different than the containers it launches </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </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/HADOOP-9379">HADOOP-9379</a> </td>
<td align="left"> capture the ulimit info after printing the log to the console </td>
<td align="left"> Trivial </td>
<td align="left"> . </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Arpit Gupta </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4990">MAPREDUCE-4990</a> </td>
<td align="left"> Construct debug strings conditionally in ShuffleHandler.Shuffle#sendMapOutput() </td>
<td align="left"> Trivial </td>
<td align="left"> . </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/HADOOP-9253">HADOOP-9253</a> </td>
<td align="left"> Capture ulimit info in the logs at service start time </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Arpit Gupta </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-525">YARN-525</a> </td>
<td align="left"> make CS node-locality-delay refreshable </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler </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-5079">MAPREDUCE-5079</a> </td>
<td align="left"> Recovery should restore task state from job history info directly </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>
</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/MAPREDUCE-3952">MAPREDUCE-3952</a> </td>
<td align="left"> In MR2, when Total input paths to process == 1, CombinefileInputFormat.getSplits() returns 0 split. </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Zhenxiao Luo </td>
<td align="left"> Bhallamudi Venkata Siva Kamesh </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-1765">HDFS-1765</a> </td>
<td align="left"> Block Replication should respect under-replication block priority </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Hairong Kuang </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-4007">MAPREDUCE-4007</a> </td>
<td align="left"> JobClient getJob(JobID) should return NULL if the job does not exist (for backwards compatibility) </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Alejandro Abdelnur </td>
<td align="left"> Alejandro Abdelnur </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6941">HADOOP-6941</a> </td>
<td align="left"> Support non-SUN JREs in UserGroupInformation </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Stephen Watt </td>
<td align="left"> Devaraj Das </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8251">HADOOP-8251</a> </td>
<td align="left"> SecurityUtil.fetchServiceTicket broken after HADOOP-6941 </td>
<td align="left"> Blocker </td>
<td align="left"> security </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/HDFS-3119">HDFS-3119</a> </td>
<td align="left"> Overreplicated block is not deleted even after the replication factor is reduced after sync follwed by closing that file </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> J.Andreina </td>
<td align="left"> Ashish Singhi </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3256">HDFS-3256</a> </td>
<td align="left"> HDFS considers blocks under-replicated if topology script is configured with only 1 rack </td>
<td align="left"> Major </td>
<td align="left"> . </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/HADOOP-8346">HADOOP-8346</a> </td>
<td align="left"> Changes to support Kerberos with non Sun JVM (HADOOP-6941) broke SPNEGO </td>
<td align="left"> Blocker </td>
<td align="left"> security </td>
<td align="left"> Alejandro Abdelnur </td>
<td align="left"> Devaraj Das </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4470">MAPREDUCE-4470</a> </td>
<td align="left"> Fix TestCombineFileInputFormat.testForEmptyFile </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Ilya Katsov </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-83">YARN-83</a> </td>
<td align="left"> Change package of YarnClient to include apache </td>
<td align="left"> Major </td>
<td align="left"> client </td>
<td align="left"> Bikas Saha </td>
<td align="left"> Bikas Saha </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-40">YARN-40</a> </td>
<td align="left"> Provide support for missing yarn commands </td>
<td align="left"> Major </td>
<td align="left"> client </td>
<td align="left"> Devaraj K </td>
<td align="left"> Devaraj K </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-150">YARN-150</a> </td>
<td align="left"> AppRejectedTransition does not unregister app from master service and scheduler </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Bikas Saha </td>
<td align="left"> Bikas Saha </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8878">HADOOP-8878</a> </td>
<td align="left"> uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem and fsck to fail when security is on </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Arpit Gupta </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4072">HDFS-4072</a> </td>
<td align="left"> On file deletion remove corresponding blocks pending replication </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Jing Zhao </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2434">HDFS-2434</a> </td>
<td align="left"> TestNameNodeMetrics.testCorruptBlock fails intermittently </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Uma Maheswara Rao G </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4637">MAPREDUCE-4637</a> </td>
<td align="left"> Killing an unassigned task attempt causes the job to fail </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Tom White </td>
<td align="left"> Mayank Bansal </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4278">MAPREDUCE-4278</a> </td>
<td align="left"> cannot run two local jobs in parallel from the same gateway. </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Araceli Henley </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-9155">HADOOP-9155</a> </td>
<td align="left"> FsPermission should have different default value, 777 for directory and 666 for file </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Binglin Chang </td>
<td align="left"> Binglin Chang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8816">HADOOP-8816</a> </td>
<td align="left"> HTTP Error 413 full HEAD if using kerberos authentication </td>
<td align="left"> Major </td>
<td align="left"> net </td>
<td align="left"> Moritz Moeller </td>
<td align="left"> Moritz Moeller </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9212">HADOOP-9212</a> </td>
<td align="left"> Potential deadlock in FileSystem.Cache/IPC/UGI </td>
<td align="left"> Major </td>
<td align="left"> fs </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/HADOOP-9193">HADOOP-9193</a> </td>
<td align="left"> hadoop script can inadvertently expand wildcard arguments when delegating to hdfs script </td>
<td align="left"> Minor </td>
<td align="left"> scripts </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Andy Isaacson </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4946">MAPREDUCE-4946</a> </td>
<td align="left"> Type conversion of map completion events leads to performance problems with large jobs </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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9231">HADOOP-9231</a> </td>
<td align="left"> Parametrize staging URL for the uniformity of distributionManagement </td>
<td align="left"> Major </td>
<td align="left"> build </td>
<td align="left"> Konstantin Boudnik </td>
<td align="left"> Konstantin Boudnik </td></tr>
<tr class="a">
<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="b">
<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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8857">HADOOP-8857</a> </td>
<td align="left"> hadoop.http.authentication.signature.secret.file docs should not state that secret is randomly generated </td>
<td align="left"> Minor </td>
<td align="left"> security </td>
<td align="left"> Eli Collins </td>
<td align="left"> Alejandro Abdelnur </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4444">HDFS-4444</a> </td>
<td align="left"> Add space between total transaction time and number of transactions in FSEditLog#printStatistics </td>
<td align="left"> Trivial </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/YARN-133">YARN-133</a> </td>
<td align="left"> update web services docs for RM clusterMetrics </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9190">HADOOP-9190</a> </td>
<td align="left"> packaging docs is broken </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Andy Isaacson </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4288">HDFS-4288</a> </td>
<td align="left"> NN accepts incremental BR as IBR in safemode </td>
<td align="left"> Critical </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-9221">HADOOP-9221</a> </td>
<td align="left"> Convert remaining xdocs to APT </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Andy Isaacson </td>
<td align="left"> Andy Isaacson </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-343">YARN-343</a> </td>
<td align="left"> Capacity Scheduler maximum-capacity value -1 is invalid </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Xuan Gong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4893">MAPREDUCE-4893</a> </td>
<td align="left"> MR AppMaster can do sub-optimal assignment of containers to map tasks leading to poor node locality </td>
<td align="left"> Major </td>
<td align="left"> applicationmaster </td>
<td align="left"> Bikas Saha </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-4969">MAPREDUCE-4969</a> </td>
<td align="left"> TestKeyValueTextInputFormat test fails with Open JDK 7 </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Arpit Agarwal </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-364">YARN-364</a> </td>
<td align="left"> AggregatedLogDeletionService can take too long to delete logs </td>
<td align="left"> Major </td>
<td align="left"> . </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-4462">HDFS-4462</a> </td>
<td align="left"> 2NN will fail to checkpoint after an HDFS upgrade from a pre-federation version of HDFS </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-360">YARN-360</a> </td>
<td align="left"> Allow apps to concurrently register tokens for renewal </td>
<td align="left"> Critical </td>
<td align="left"> . </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/MAPREDUCE-4953">MAPREDUCE-4953</a> </td>
<td align="left"> HadoopPipes misuses fprintf </td>
<td align="left"> Major </td>
<td align="left"> pipes </td>
<td align="left"> Andy Isaacson </td>
<td align="left"> Andy Isaacson </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9278">HADOOP-9278</a> </td>
<td align="left"> HarFileSystem may leak file handle </td>
<td align="left"> Major </td>
<td align="left"> fs </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-357">YARN-357</a> </td>
<td align="left"> App submission should not be synchronized </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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-355">YARN-355</a> </td>
<td align="left"> RM app submission jams under load </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/HADOOP-9289">HADOOP-9289</a> </td>
<td align="left"> FsShell rm -f fails for non-matching globs </td>
<td align="left"> Blocker </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-4671">MAPREDUCE-4671</a> </td>
<td align="left"> AM does not tell the RM about container requests that are no longer needed </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Bikas Saha </td>
<td align="left"> Bikas Saha </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9124">HADOOP-9124</a> </td>
<td align="left"> SortedMapWritable violates contract of Map interface for equals() and hashCode() </td>
<td align="left"> Minor </td>
<td align="left"> io </td>
<td align="left"> Patrick Hunt </td>
<td align="left"> Surenkumar Nihalani </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-362">YARN-362</a> </td>
<td align="left"> Unexpected extra results when using webUI table search </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Jason Lowe </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-9302">HADOOP-9302</a> </td>
<td align="left"> HDFS docs not linked from top level </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Andy Isaacson </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9303">HADOOP-9303</a> </td>
<td align="left"> command manual dfsadmin missing entry for restoreFailedStorage option </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Andy Isaacson </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5000">MAPREDUCE-5000</a> </td>
<td align="left"> TaskImpl.getCounters() can return the counters for the wrong task attempt when task is 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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4495">HDFS-4495</a> </td>
<td align="left"> Allow client-side lease renewal to be retried beyond soft-limit </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </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-9154">HADOOP-9154</a> </td>
<td align="left"> SortedMapWritable#putAll() doesn&#x2019;t add key/value classes to the map </td>
<td align="left"> Major </td>
<td align="left"> io </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-5009">MAPREDUCE-5009</a> </td>
<td align="left"> Killing the Task Attempt slated for commit does not clear the value from the Task commitAttempt member </td>
<td align="left"> Critical </td>
<td align="left"> mrv1 </td>
<td align="left"> Robert Parker </td>
<td align="left"> Robert Parker </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-400">YARN-400</a> </td>
<td align="left"> RM can return null application resource usage report leading to NPE in client </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </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-236">YARN-236</a> </td>
<td align="left"> RM should point tracking URL to RM web page when app fails to start </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/HDFS-4222">HDFS-4222</a> </td>
<td align="left"> NN is unresponsive and loses heartbeats of DNs when Hadoop is configured to use LDAP and LDAP has issues </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Xiaobo Peng </td>
<td align="left"> Xiaobo Peng </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-426">YARN-426</a> </td>
<td align="left"> Failure to download a public resource on a node prevents further downloads of the resource from that node </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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9339">HADOOP-9339</a> </td>
<td align="left"> IPC.Server incorrectly sets UGI auth type </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/MAPREDUCE-4871">MAPREDUCE-4871</a> </td>
<td align="left"> AM uses mapreduce.jobtracker.split.metainfo.maxsize but mapred-default has mapreduce.job.split.metainfo.maxsize </td>
<td align="left"> Major </td>
<td align="left"> 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/YARN-269">YARN-269</a> </td>
<td align="left"> Resource Manager not logging the health_check_script result when taking it out </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Thomas Graves </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-376">YARN-376</a> </td>
<td align="left"> Apps that have completed can appear as RUNNING on the NM UI </td>
<td align="left"> Blocker </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/YARN-410">YARN-410</a> </td>
<td align="left"> New lines in diagnostics for a failed app on the per-application page make it hard to read </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Vinod Kumar Vavilapalli </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/MAPREDUCE-4794">MAPREDUCE-4794</a> </td>
<td align="left"> DefaultSpeculator generates error messages on normal shutdown </td>
<td align="left"> Major </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/HDFS-4128">HDFS-4128</a> </td>
<td align="left"> 2NN gets stuck in inconsistent state if edit log replay fails in the middle </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Todd Lipcon </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-4532">HDFS-4532</a> </td>
<td align="left"> RPC call queue may fill due to current user lookup </td>
<td align="left"> Critical </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/YARN-448">YARN-448</a> </td>
<td align="left"> Remove unnecessary hflush from log aggregation </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-5043">MAPREDUCE-5043</a> </td>
<td align="left"> Fetch failure processing can cause AM event queue to backup and eventually OOM </td>
<td align="left"> Blocker </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/YARN-345">YARN-345</a> </td>
<td align="left"> Many InvalidStateTransitonException errors for ApplicationImpl in Node Manager </td>
<td align="left"> Critical </td>
<td align="left"> nodemanager </td>
<td align="left"> Devaraj K </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-4553">HDFS-4553</a> </td>
<td align="left"> Webhdfs will NPE on some unexpected response codes </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </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-227">YARN-227</a> </td>
<td align="left"> Application expiration difficult to debug for end-users </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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5027">MAPREDUCE-5027</a> </td>
<td align="left"> Shuffle does not limit number of outstanding connections </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-3685">MAPREDUCE-3685</a> </td>
<td align="left"> There are some bugs in implementation of MergeManager </td>
<td align="left"> Critical </td>
<td align="left"> mrv2 </td>
<td align="left"> anty.rao </td>
<td align="left"> anty </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4544">HDFS-4544</a> </td>
<td align="left"> Error in deleting blocks should not do check disk, for all types of errors </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Amareshwari Sriramadasu </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5023">MAPREDUCE-5023</a> </td>
<td align="left"> History Server Web Services missing Job Counters </td>
<td align="left"> Critical </td>
<td align="left"> jobhistoryserver, webapps </td>
<td align="left"> Kendall Thrapp </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-5060">MAPREDUCE-5060</a> </td>
<td align="left"> Fetch failures that time out only count against the first map task </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Robert Joseph Evans </td>
<td align="left"> Robert Joseph Evans </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3344">HDFS-3344</a> </td>
<td align="left"> Unreliable corrupt blocks counting in TestProcessCorruptBlocks </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9406">HADOOP-9406</a> </td>
<td align="left"> hadoop-client leaks dependency on JDK tools jar </td>
<td align="left"> Major </td>
<td align="left"> build </td>
<td align="left"> Alejandro Abdelnur </td>
<td align="left"> Alejandro Abdelnur </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5042">MAPREDUCE-5042</a> </td>
<td align="left"> Reducer unable to fetch for a map task that was recovered </td>
<td align="left"> Blocker </td>
<td align="left"> mr-am, security </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-5053">MAPREDUCE-5053</a> </td>
<td align="left"> java.lang.InternalError from decompression codec cause reducer to fail </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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5075">MAPREDUCE-5075</a> </td>
<td align="left"> DistCp leaks input file handles </td>
<td align="left"> Major </td>
<td align="left"> distcp </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-109">YARN-109</a> </td>
<td align="left"> .tmp file is not deleted for localized archives </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Mayank Bansal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4581">HDFS-4581</a> </td>
<td align="left"> DataNode#checkDiskError should not be called on network errors </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Rohit Kochar </td>
<td align="left"> Rohit Kochar </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-460">YARN-460</a> </td>
<td align="left"> CS user left in list of active users for the queue even when application finished </td>
<td align="left"> Blocker </td>
<td align="left"> capacityscheduler </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-4992">MAPREDUCE-4992</a> </td>
<td align="left"> AM hangs in RecoveryService when recovering tasks with speculative attempts </td>
<td align="left"> Critical </td>
<td align="left"> mr-am </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-4649">HDFS-4649</a> </td>
<td align="left"> Webhdfs cannot list large directories </td>
<td align="left"> Blocker </td>
<td align="left"> namenode, security, webhdfs </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/MAPREDUCE-5137">MAPREDUCE-5137</a> </td>
<td align="left"> AM web UI: clicking on Map Task results in 500 error </td>
<td align="left"> Major </td>
<td align="left"> applicationmaster </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-8157">HADOOP-8157</a> </td>
<td align="left"> TestRPCCallBenchmark#testBenchmarkWithWritable fails with RTE </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9067">HADOOP-9067</a> </td>
<td align="left"> provide test for method org.apache.hadoop.fs.LocalFileSystem.reportChecksumFailure(Path, FSDataInputStream, long, FSDataInputStream, long) </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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4905">MAPREDUCE-4905</a> </td>
<td align="left"> test org.apache.hadoop.mapred.pipes </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Aleksey Gorshkov </td>
<td align="left"> Aleksey Gorshkov </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4972">MAPREDUCE-4972</a> </td>
<td align="left"> Coverage fixing for org.apache.hadoop.mapreduce.jobhistory </td>
<td align="left"> Major </td>
<td align="left"> . </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/MAPREDUCE-4875">MAPREDUCE-4875</a> </td>
<td align="left"> coverage fixing for org.apache.hadoop.mapred </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Aleksey Gorshkov </td>
<td align="left"> Aleksey Gorshkov </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4991">MAPREDUCE-4991</a> </td>
<td align="left"> coverage for gridmix </td>
<td align="left"> Major </td>
<td align="left"> . </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/MAPREDUCE-5007">MAPREDUCE-5007</a> </td>
<td align="left"> fix coverage org.apache.hadoop.mapreduce.v2.hs </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Aleksey Gorshkov </td>
<td align="left"> Aleksey Gorshkov </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/HDFS-2477">HDFS-2477</a> </td>
<td align="left"> Optimize computing the diff between a block report and the namenode state. </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Tomasz Nykiel </td>
<td align="left"> Tomasz Nykiel </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2495">HDFS-2495</a> </td>
<td align="left"> Increase granularity of write operations in ReplicationMonitor thus reducing contention for write lock </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Tomasz Nykiel </td>
<td align="left"> Tomasz Nykiel </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2476">HDFS-2476</a> </td>
<td align="left"> More CPU efficient data structure for under-replicated/over-replicated/invalidate blocks </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Tomasz Nykiel </td>
<td align="left"> Tomasz Nykiel </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-29">YARN-29</a> </td>
<td align="left"> Add a yarn-client module </td>
<td align="left"> Major </td>
<td align="left"> client </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/HDFS-4542">HDFS-4542</a> </td>
<td align="left"> Webhdfs doesn&#x2019;t support secure proxy users </td>
<td align="left"> Blocker </td>
<td align="left"> webhdfs </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-4560">HDFS-4560</a> </td>
<td align="left"> Webhdfs cannot use tokens obtained by another user </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </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-4566">HDFS-4566</a> </td>
<td align="left"> Webdhfs token cancelation should use authentication </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </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-4567">HDFS-4567</a> </td>
<td align="left"> Webhdfs does not need a token for token operations </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </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-4577">HDFS-4577</a> </td>
<td align="left"> Webhdfs operations should declare if authentication is required </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </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-468">YARN-468</a> </td>
<td align="left"> coverage fix for org.apache.hadoop.yarn.server.webproxy.amfilter </td>
<td align="left"> Major </td>
<td align="left"> . </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/YARN-200">YARN-200</a> </td>
<td align="left"> yarn log does not output all needed information, and is in a binary format </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Robert Joseph Evans </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-4548">HDFS-4548</a> </td>
<td align="left"> Webhdfs doesn&#x2019;t renegotiate SPNEGO token </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Daryn Sharp </td>
<td align="left"> Daryn Sharp </td></tr>
</tbody>
</table></section></section>
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