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<h1>Apache Hadoop Changelog</h1>
<div class="section">
<h2><a name="Release_2.7.2_-_2016-01-25"></a>Release 2.7.2 - 2016-01-25</h2>
<div class="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-4087">YARN-4087</a> </td>
<td align="left"> Followup fixes after YARN-2019 regarding RM behavior when state-store error occurs </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jian He </td>
<td align="left"> Jian He </td></tr>
</tbody>
</table></div>
<div class="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-7645">HDFS-7645</a> </td>
<td align="left"> Rolling upgrade is restoring blocks from trash multiple times </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Nathan Roberts </td>
<td align="left"> Keisuke Ogiwara </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3248">YARN-3248</a> </td>
<td align="left"> Display count of nodes blacklisted by apps in the web UI </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler, resourcemanager </td>
<td align="left"> Varun Vasudev </td>
<td align="left"> Varun Vasudev </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-11812">HADOOP-11812</a> </td>
<td align="left"> Implement listLocatedStatus for ViewFileSystem to speed up split calculation </td>
<td align="left"> Blocker </td>
<td align="left"> fs </td>
<td align="left"> Gera Shegalov </td>
<td align="left"> Gera Shegalov </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7139">HADOOP-7139</a> </td>
<td align="left"> Allow appending to existing SequenceFiles </td>
<td align="left"> Major </td>
<td align="left"> io </td>
<td align="left"> Stephen Rose </td>
<td align="left"> Kanaka Kumar Avvaru </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8659">HDFS-8659</a> </td>
<td align="left"> Block scanner INFO message is spamming logs </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Yongjun Zhang </td>
<td align="left"> Yongjun Zhang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8722">HDFS-8722</a> </td>
<td align="left"> Optimize datanode writes for small writes and flushes </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/HADOOP-12232">HADOOP-12232</a> </td>
<td align="left"> Upgrade Tomcat dependency to 6.0.44. </td>
<td align="left"> Major </td>
<td align="left"> build </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-3170">YARN-3170</a> </td>
<td align="left"> YARN architecture document needs updating </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Allen Wittenauer </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-7314">HDFS-7314</a> </td>
<td align="left"> When the DFSClient lease cannot be renewed, abort open-for-write files rather than the entire DFSClient </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Ming Ma </td>
<td align="left"> Ming Ma </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3978">YARN-3978</a> </td>
<td align="left"> Configurably turn off the saving of container info in Generic AHS </td>
<td align="left"> Major </td>
<td align="left"> timelineserver, yarn </td>
<td align="left"> Eric Payne </td>
<td align="left"> Eric Payne </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12280">HADOOP-12280</a> </td>
<td align="left"> Skip unit tests based on maven profile rather than NativeCodeLoader.isNativeCodeLoaded </td>
<td align="left"> Minor </td>
<td align="left"> test </td>
<td align="left"> Masatake Iwasaki </td>
<td align="left"> Masatake Iwasaki </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5323">HADOOP-5323</a> </td>
<td align="left"> Trash documentation should describe its directory structure and configurations </td>
<td align="left"> Minor </td>
<td align="left"> documentation </td>
<td align="left"> Suman Sehgal </td>
<td align="left"> Weiwei Yang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8384">HDFS-8384</a> </td>
<td align="left"> Allow NN to startup if there are files having a lease but are not under construction </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12413">HADOOP-12413</a> </td>
<td align="left"> AccessControlList should avoid calling getGroupNames in isUserInList with empty groups. </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4158">YARN-4158</a> </td>
<td align="left"> Remove duplicate close for LogWriter in AppLogAggregatorImpl#uploadLogsForContainers </td>
<td align="left"> Minor </td>
<td align="left"> nodemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3727">YARN-3727</a> </td>
<td align="left"> For better error recovery, check if the directory exists before using it for localization. </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9221">HDFS-9221</a> </td>
<td align="left"> HdfsServerConstants#ReplicaState#getState should avoid calling values() since it creates a temporary array </td>
<td align="left"> Major </td>
<td align="left"> performance </td>
<td align="left"> Staffan Friberg </td>
<td align="left"> Staffan Friberg </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9434">HDFS-9434</a> </td>
<td align="left"> Recommission a datanode with 500k blocks may pause NN for 30 seconds </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="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12825">HADOOP-12825</a> </td>
<td align="left"> Log slow name resolutions </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Sidharta Seethana </td>
<td align="left"> Sidharta Seethana </td></tr>
</tbody>
</table></div>
<div class="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-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/HDFS-6945">HDFS-6945</a> </td>
<td align="left"> BlockManager should remove a block from excessReplicateMap and decrement ExcessBlocks metric when the block is removed </td>
<td align="left"> Critical </td>
<td align="left"> namenode </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Akira Ajisaka </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8046">HDFS-8046</a> </td>
<td align="left"> Allow better control of getContentSummary </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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2890">YARN-2890</a> </td>
<td align="left"> MiniYarnCluster should turn on timeline service if configured to do so </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Mit Desai </td>
<td align="left"> Mit Desai </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-7725">HDFS-7725</a> </td>
<td align="left"> Incorrect &#x201c;nodes in service&#x201d; metrics caused all writes to fail </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Ming Ma </td>
<td align="left"> Ming Ma </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8099">HDFS-8099</a> </td>
<td align="left"> Change &#x201c;DFSInputStream has been closed already&#x201d; message to debug log level </td>
<td align="left"> Minor </td>
<td align="left"> hdfs-client </td>
<td align="left"> Charles Lamb </td>
<td align="left"> Charles Lamb </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-11491">HADOOP-11491</a> </td>
<td align="left"> HarFs incorrectly declared as requiring an authority </td>
<td align="left"> Critical </td>
<td align="left"> fs </td>
<td align="left"> Gera Shegalov </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5649">MAPREDUCE-5649</a> </td>
<td align="left"> Reduce cannot use more than 2G memory for the final merge </td>
<td align="left"> Major </td>
<td align="left"> mrv2 </td>
<td align="left"> stanley shi </td>
<td align="left"> Gera Shegalov </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8219">HDFS-8219</a> </td>
<td align="left"> setStoragePolicy with folder behavior is different after cluster restart </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Peter Shi </td>
<td align="left"> Surendra Singh Lilhore </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6273">MAPREDUCE-6273</a> </td>
<td align="left"> HistoryFileManager should check whether summaryFile exists to avoid FileNotFoundException causing HistoryFileInfo into MOVE_FAILED state </td>
<td align="left"> Minor </td>
<td align="left"> jobhistoryserver </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8431">HDFS-8431</a> </td>
<td align="left"> hdfs crypto class not found in Windows </td>
<td align="left"> Critical </td>
<td align="left"> scripts </td>
<td align="left"> Sumana Sathish </td>
<td align="left"> Anu Engineer </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-7609">HDFS-7609</a> </td>
<td align="left"> Avoid retry cache collision when Standby NameNode loading edits </td>
<td align="left"> Critical </td>
<td align="left"> namenode </td>
<td align="left"> Carrey Zhan </td>
<td align="left"> Ming Ma </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6377">MAPREDUCE-6377</a> </td>
<td align="left"> JHS sorting on state column not working in webUi </td>
<td align="left"> Minor </td>
<td align="left"> jobhistoryserver </td>
<td align="left"> Bibin A Chundatt </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3780">YARN-3780</a> </td>
<td align="left"> Should use equals when compare Resource in RMNodeImpl#ReconnectNodeTransition </td>
<td align="left"> Minor </td>
<td align="left"> resourcemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8615">HDFS-8615</a> </td>
<td align="left"> Correct HTTP method in WebHDFS document </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3802">YARN-3802</a> </td>
<td align="left"> Two RMNodes for the same NodeId are used in RM sometimes after NM is reconnected. </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5948">MAPREDUCE-5948</a> </td>
<td align="left"> org.apache.hadoop.mapred.LineRecordReader does not handle multibyte record delimiters well </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Kris Geusebroek </td>
<td align="left"> Akira Ajisaka </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8151">HADOOP-8151</a> </td>
<td align="left"> Error handling in snappy decompressor throws invalid exceptions </td>
<td align="left"> Major </td>
<td align="left"> io, native </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Matt Foley </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8656">HDFS-8656</a> </td>
<td align="left"> Preserve compatibility of ClientProtocol#rollingUpgrade after finalization </td>
<td align="left"> Critical </td>
<td align="left"> rolling upgrades </td>
<td align="left"> Andrew Wang </td>
<td align="left"> Andrew Wang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3793">YARN-3793</a> </td>
<td align="left"> Several NPEs when deleting local files on NM recovery </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3508">YARN-3508</a> </td>
<td align="left"> Prevent processing preemption events on the main RM dispatcher </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager, scheduler </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6425">MAPREDUCE-6425</a> </td>
<td align="left"> ShuffleHandler passes wrong &#x201c;base&#x201d; parameter to getMapOutputInfo if mapId is not in the cache. </td>
<td align="left"> Major </td>
<td align="left"> mrv2, nodemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12186">HADOOP-12186</a> </td>
<td align="left"> ActiveStandbyElector shouldn&#x2019;t call monitorLockNodeAsync multiple times </td>
<td align="left"> Major </td>
<td align="left"> ha </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3690">YARN-3690</a> </td>
<td align="left"> [JDK8] &#x2018;mvn site&#x2019; fails </td>
<td align="left"> Major </td>
<td align="left"> api, site </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6426">MAPREDUCE-6426</a> </td>
<td align="left"> TestShuffleHandler#testGetMapOutputInfo is failing </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Devaraj K </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12191">HADOOP-12191</a> </td>
<td align="left"> Bzip2Factory is not thread safe </td>
<td align="left"> Major </td>
<td align="left"> io </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8767">HDFS-8767</a> </td>
<td align="left"> RawLocalFileSystem.listStatus() returns null for UNIX pipefile </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Haohui Mai </td>
<td align="left"> Kanaka Kumar Avvaru </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3535">YARN-3535</a> </td>
<td align="left"> Scheduler must re-request container resources when RMContainer transitions from ALLOCATED to KILLED </td>
<td align="left"> Critical </td>
<td align="left"> capacityscheduler, fairscheduler, resourcemanager </td>
<td align="left"> Peng Zhang </td>
<td align="left"> Peng Zhang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3905">YARN-3905</a> </td>
<td align="left"> Application History Server UI NPEs when accessing apps run after RM restart </td>
<td align="left"> Major </td>
<td align="left"> timelineserver </td>
<td align="left"> Eric Payne </td>
<td align="left"> Eric Payne </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3878">YARN-3878</a> </td>
<td align="left"> AsyncDispatcher can hang while stopping if it is configured for draining events on stop </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Varun Saxena </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2019">YARN-2019</a> </td>
<td align="left"> Retrospect on decision of making RM crashed if any exception throw in ZKRMStateStore </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Junping Du </td>
<td align="left"> Jian He </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8806">HDFS-8806</a> </td>
<td align="left"> Inconsistent metrics: number of missing blocks with replication factor 1 not properly cleared </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Zhe Zhang </td>
<td align="left"> Zhe Zhang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3967">YARN-3967</a> </td>
<td align="left"> Fetch the application report from the AHS if the RM does not know about it </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Mit Desai </td>
<td align="left"> Mit Desai </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3925">YARN-3925</a> </td>
<td align="left"> ContainerLogsUtils#getContainerLogFile fails to read container log files from full disks. </td>
<td align="left"> Critical </td>
<td align="left"> nodemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3990">YARN-3990</a> </td>
<td align="left"> AsyncDispatcher may overloaded with RMAppNodeUpdateEvent when Node is connected/disconnected </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> Rohith Sharma K S </td>
<td align="left"> Bibin A Chundatt </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8850">HDFS-8850</a> </td>
<td align="left"> VolumeScanner thread exits with exception if there is no block pool to be scanned but there are suspicious blocks </td>
<td align="left"> Major </td>
<td align="left"> datanode </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/HADOOP-12304">HADOOP-12304</a> </td>
<td align="left"> Applications using FileContext fail with the default file system configured to be wasb/s3/etc. </td>
<td align="left"> Blocker </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/HADOOP-11932">HADOOP-11932</a> </td>
<td align="left"> MetricsSinkAdapter hangs when being stopped </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Jian He </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3999">YARN-3999</a> </td>
<td align="left"> RM hangs on draining events </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jian He </td>
<td align="left"> Jian He </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8879">HDFS-8879</a> </td>
<td align="left"> Quota by storage type usage incorrectly initialized upon namenode restart </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Xiaoyu Yao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4005">YARN-4005</a> </td>
<td align="left"> Completed container whose app is finished is not removed from NMStateStore </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jun Gong </td>
<td align="left"> Jun Gong </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4047">YARN-4047</a> </td>
<td align="left"> ClientRMService getApplications has high scheduler lock contention </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/HDFS-8891">HDFS-8891</a> </td>
<td align="left"> HDFS concat should keep srcs order </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Yong Zhang </td>
<td align="left"> Yong Zhang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6439">MAPREDUCE-6439</a> </td>
<td align="left"> AM may fail instead of retrying if RM shuts down during the allocate call </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Anubhav Dhoot </td>
<td align="left"> Anubhav Dhoot </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8852">HDFS-8852</a> </td>
<td align="left"> HDFS architecture documentation of version 2.x is outdated about append write support </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Hong Dai Thanh </td>
<td align="left"> Ajith S </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3857">YARN-3857</a> </td>
<td align="left"> Memory leak in ResourceManager with SIMPLE mode </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> mujunchao </td>
<td align="left"> mujunchao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8867">HDFS-8867</a> </td>
<td align="left"> Enable optimized block reports </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Rushabh S Shah </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-8863">HDFS-8863</a> </td>
<td align="left"> The remaining space check in BlockPlacementPolicyDefault is flawed </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/MAPREDUCE-6454">MAPREDUCE-6454</a> </td>
<td align="left"> MapReduce doesn&#x2019;t set the HADOOP_CLASSPATH for jar lib in distributed cache. </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Junping Du </td>
<td align="left"> Junping Du </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3896">YARN-3896</a> </td>
<td align="left"> RMNode transitioned from RUNNING to REBOOTED because its response id had not been reset synchronously </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Jun Gong </td>
<td align="left"> Jun Gong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8846">HDFS-8846</a> </td>
<td align="left"> Add a unit test for INotify functionality across a layout version upgrade </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Zhe Zhang </td>
<td align="left"> Zhe Zhang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8950">HDFS-8950</a> </td>
<td align="left"> NameNode refresh doesn&#x2019;t remove DataNodes that are no longer in the allowed list </td>
<td align="left"> Major </td>
<td align="left"> datanode, namenode </td>
<td align="left"> Daniel Templeton </td>
<td align="left"> Daniel Templeton </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12359">HADOOP-12359</a> </td>
<td align="left"> hadoop fs -getmerge doc is wrong </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Daniel Templeton </td>
<td align="left"> Jagadesh Kiran N </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10365">HADOOP-10365</a> </td>
<td align="left"> BufferedOutputStream in FileUtil#unpackEntries() should be closed in finally block </td>
<td align="left"> Minor </td>
<td align="left"> util </td>
<td align="left"> Ted Yu </td>
<td align="left"> Kiran Kumar M R </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8995">HDFS-8995</a> </td>
<td align="left"> Flaw in registration bookeeping can make DN die on reconnect </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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12006">HADOOP-12006</a> </td>
<td align="left"> Remove unimplemented option for `hadoop fs -ls` from document in branch-2.7 </td>
<td align="left"> Major </td>
<td align="left"> documentation, fs </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Akira Ajisaka </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12213">HADOOP-12213</a> </td>
<td align="left"> Interrupted exception can occur when Client#stop is called </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Oleg Zhurakousky </td>
<td align="left"> Kuhu Shukla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4103">YARN-4103</a> </td>
<td align="left"> RM WebServices missing scheme for appattempts logLinks </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/YARN-4105">YARN-4105</a> </td>
<td align="left"> Capacity Scheduler headroom for DRF is wrong </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler </td>
<td align="left"> Chang Li </td>
<td align="left"> Chang Li </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6442">MAPREDUCE-6442</a> </td>
<td align="left"> Stack trace is missing when error occurs in client protocol provider&#x2019;s constructor </td>
<td align="left"> Major </td>
<td align="left"> client </td>
<td align="left"> Chang Li </td>
<td align="left"> Chang Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4096">YARN-4096</a> </td>
<td align="left"> App local logs are leaked if log aggregation fails to initialize for the app </td>
<td align="left"> Major </td>
<td align="left"> log-aggregation, 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/HDFS-9033">HDFS-9033</a> </td>
<td align="left"> dfsadmin -metasave prints &#x201c;NaN&#x201d; for cache used% </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Archana T </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6474">MAPREDUCE-6474</a> </td>
<td align="left"> ShuffleHandler can possibly exhaust nodemanager file descriptors </td>
<td align="left"> Major </td>
<td align="left"> mrv2, nodemanager </td>
<td align="left"> Nathan Roberts </td>
<td align="left"> Kuhu Shukla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9042">HDFS-9042</a> </td>
<td align="left"> Update document for the Storage policy name </td>
<td align="left"> Minor </td>
<td align="left"> documentation </td>
<td align="left"> J.Andreina </td>
<td align="left"> J.Andreina </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6472">MAPREDUCE-6472</a> </td>
<td align="left"> MapReduce AM should have java.io.tmpdir=./tmp to be consistent with tasks </td>
<td align="left"> Major </td>
<td align="left"> mr-am </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Naganarasimha G R </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6481">MAPREDUCE-6481</a> </td>
<td align="left"> LineRecordReader may give incomplete record and wrong position/key information for uncompressed input sometimes. </td>
<td align="left"> Critical </td>
<td align="left"> mrv2 </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5982">MAPREDUCE-5982</a> </td>
<td align="left"> Task attempts that fail from the ASSIGNED state can disappear </td>
<td align="left"> Major </td>
<td align="left"> mr-am </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Chang Li </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3697">YARN-3697</a> </td>
<td align="left"> FairScheduler: ContinuousSchedulingThread can fail to shutdown </td>
<td align="left"> Critical </td>
<td align="left"> fairscheduler </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9043">HDFS-9043</a> </td>
<td align="left"> Doc updation for commands in HDFS Federation </td>
<td align="left"> Minor </td>
<td align="left"> documentation </td>
<td align="left"> J.Andreina </td>
<td align="left"> J.Andreina </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3975">YARN-3975</a> </td>
<td align="left"> WebAppProxyServlet should not redirect to RM page if AHS is enabled </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Mit Desai </td>
<td align="left"> Mit Desai </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3624">YARN-3624</a> </td>
<td align="left"> ApplicationHistoryServer reverses the order of the filters it gets </td>
<td align="left"> Major </td>
<td align="left"> timelineserver </td>
<td align="left"> Mit Desai </td>
<td align="left"> Mit Desai </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9106">HDFS-9106</a> </td>
<td align="left"> Transfer failure during pipeline recovery causes permanent write failures </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/MAPREDUCE-6492">MAPREDUCE-6492</a> </td>
<td align="left"> AsyncDispatcher exit with NPE on TaskAttemptImpl#sendJHStartEventForAssignedFailTask </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Bibin A Chundatt </td>
<td align="left"> Bibin A Chundatt </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4180">YARN-4180</a> </td>
<td align="left"> AMLauncher does not retry on failures when talking to NM </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> Anubhav Dhoot </td>
<td align="left"> Anubhav Dhoot </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6497">MAPREDUCE-6497</a> </td>
<td align="left"> Fix wrong value of JOB_FINISHED event in JobHistoryEventHandler </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Shinichi Yamashita </td>
<td align="left"> Shinichi Yamashita </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12230">HADOOP-12230</a> </td>
<td align="left"> hadoop-project declares duplicate, conflicting curator dependencies </td>
<td align="left"> Minor </td>
<td align="left"> build </td>
<td align="left"> Steve Loughran </td>
<td align="left"> Rakesh R </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3619">YARN-3619</a> </td>
<td align="left"> ContainerMetrics unregisters during getMetrics and leads to ConcurrentModificationException </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4209">YARN-4209</a> </td>
<td align="left"> RMStateStore FENCED state doesn&#x2019;t work due to updateFencedState called by stateMachine.doTransition </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9178">HDFS-9178</a> </td>
<td align="left"> Slow datanode I/O can cause a wrong node to be marked bad </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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12465">HADOOP-12465</a> </td>
<td align="left"> Incorrect javadoc in WritableUtils.java </td>
<td align="left"> Minor </td>
<td align="left"> documentation </td>
<td align="left"> Martin Petricek </td>
<td align="left"> Jagadesh Kiran N </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8676">HDFS-8676</a> </td>
<td align="left"> Delayed rolling upgrade finalization can cause heartbeat expiration and write failures </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Walter Su </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9220">HDFS-9220</a> </td>
<td align="left"> Reading small file (&lt; 512 bytes) that is open for append fails due to incorrect checksum </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Bogdan Raducanu </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12464">HADOOP-12464</a> </td>
<td align="left"> Interrupted client may try to fail-over and retry </td>
<td align="left"> Major </td>
<td align="left"> ipc </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-4281">YARN-4281</a> </td>
<td align="left"> 2.7 RM app page is broken </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Chang Li </td>
<td align="left"> Chang Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3798">YARN-3798</a> </td>
<td align="left"> ZKRMStateStore shouldn&#x2019;t create new session without occurrance of SESSIONEXPIED </td>
<td align="left"> Blocker </td>
<td align="left"> resourcemanager </td>
<td align="left"> Bibin A Chundatt </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6518">MAPREDUCE-6518</a> </td>
<td align="left"> Set SO_KEEPALIVE on shuffle connections </td>
<td align="left"> Major </td>
<td align="left"> mrv2, nodemanager </td>
<td align="left"> Nathan Roberts </td>
<td align="left"> Chang Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9273">HDFS-9273</a> </td>
<td align="left"> ACLs on root directory may be lost after NN restart </td>
<td align="left"> Critical </td>
<td align="left"> namenode </td>
<td align="left"> Xiao Chen </td>
<td align="left"> Xiao Chen </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4000">YARN-4000</a> </td>
<td align="left"> RM crashes with NPE if leaf queue becomes parent queue during restart </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler, resourcemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4009">YARN-4009</a> </td>
<td align="left"> CORS support for ResourceManager REST API </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Prakash Ramachandran </td>
<td align="left"> Varun Vasudev </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4041">YARN-4041</a> </td>
<td align="left"> Slow delegation token renewal can severely prolong RM recovery </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Sunil Govindan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9290">HDFS-9290</a> </td>
<td align="left"> DFSClient#callAppend() is not backward compatible for slightly older NameNodes </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Tony Wu </td>
<td align="left"> Tony Wu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9305">HDFS-9305</a> </td>
<td align="left"> Delayed heartbeat processing causes storm of subsequent heartbeats </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9317">HDFS-9317</a> </td>
<td align="left"> Document fsck -blockId and -storagepolicy options in branch-2.7 </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Akira Ajisaka </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9083">HDFS-9083</a> </td>
<td align="left"> Replication violates block placement policy. </td>
<td align="left"> Blocker </td>
<td align="left"> namenode </td>
<td align="left"> Rushabh S Shah </td>
<td align="left"> Rushabh S Shah </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4313">YARN-4313</a> </td>
<td align="left"> Race condition in MiniMRYarnCluster when getting history server address </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jian He </td>
<td align="left"> Jian He </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4312">YARN-4312</a> </td>
<td align="left"> TestSubmitApplicationWithRMHA fails on branch-2.7 and branch-2.6 as some of the test cases time out </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Varun Saxena </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4320">YARN-4320</a> </td>
<td align="left"> TestJobHistoryEventHandler fails as AHS in MiniYarnCluster no longer binds to default port 8188 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Varun Saxena </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6528">MAPREDUCE-6528</a> </td>
<td align="left"> Memory leak for HistoryFileManager.getJobSummary() </td>
<td align="left"> Critical </td>
<td align="left"> jobhistoryserver </td>
<td align="left"> Junping Du </td>
<td align="left"> Junping Du </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6451">MAPREDUCE-6451</a> </td>
<td align="left"> DistCp has incorrect chunkFilePath for multiple jobs when strategy is dynamic </td>
<td align="left"> Major </td>
<td align="left"> distcp </td>
<td align="left"> Kuhu Shukla </td>
<td align="left"> Kuhu Shukla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4321">YARN-4321</a> </td>
<td align="left"> Incessant retries if NoAuthException is thrown by Zookeeper in non HA mode </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Varun Saxena </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4326">YARN-4326</a> </td>
<td align="left"> Fix TestDistributedShell timeout as AHS in MiniYarnCluster no longer binds to default port 8188 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> MENG DING </td>
<td align="left"> MENG DING </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9289">HDFS-9289</a> </td>
<td align="left"> Make DataStreamer#block thread safe and verify genStamp in commitBlock </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Chang Li </td>
<td align="left"> Chang Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4127">YARN-4127</a> </td>
<td align="left"> RM fail with noAuth error if switched from failover mode to non-failover mode </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Jian He </td>
<td align="left"> Varun Saxena </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12526">HADOOP-12526</a> </td>
<td align="left"> [Branch-2] there are duplicate dependency definitions in pom&#x2019;s </td>
<td align="left"> Major </td>
<td align="left"> build </td>
<td align="left"> Sangjin Lee </td>
<td align="left"> Sangjin Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12451">HADOOP-12451</a> </td>
<td align="left"> [Branch-2] Setting HADOOP_HOME explicitly should be allowed </td>
<td align="left"> Blocker </td>
<td align="left"> scripts </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/YARN-4241">YARN-4241</a> </td>
<td align="left"> Fix typo of property name in yarn-default.xml </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Anthony Rojas </td>
<td align="left"> Anthony Rojas </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6540">MAPREDUCE-6540</a> </td>
<td align="left"> TestMRTimelineEventHandling fails </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Sangjin Lee </td>
<td align="left"> Sangjin Lee </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4354">YARN-4354</a> </td>
<td align="left"> Public resource localization fails with NPE </td>
<td align="left"> Blocker </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/HDFS-9413">HDFS-9413</a> </td>
<td align="left"> getContentSummary() on standby should throw StandbyException </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Brahma Reddy Battula </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9431">HDFS-9431</a> </td>
<td align="left"> DistributedFileSystem#concat fails if the target path is relative. </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Kazuho Fujii </td>
<td align="left"> Kazuho Fujii </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2859">YARN-2859</a> </td>
<td align="left"> ApplicationHistoryServer binds to default port 8188 in MiniYARNCluster </td>
<td align="left"> Critical </td>
<td align="left"> timelineserver </td>
<td align="left"> Hitesh Shah </td>
<td align="left"> Vinod Kumar Vavilapalli </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12577">HADOOP-12577</a> </td>
<td align="left"> Bump up commons-collections version to 3.2.2 to address a security flaw </td>
<td align="left"> Blocker </td>
<td align="left"> build, security </td>
<td align="left"> Wei-Chiu Chuang </td>
<td align="left"> Wei-Chiu Chuang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4344">YARN-4344</a> </td>
<td align="left"> NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> Varun Vasudev </td>
<td align="left"> Varun Vasudev </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5883">MAPREDUCE-5883</a> </td>
<td align="left"> &#x201c;Total megabyte-seconds&#x201d; in job counters is slightly misleading </td>
<td align="left"> Minor </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-4365">YARN-4365</a> </td>
<td align="left"> FileSystemNodeLabelStore should check for root dir existence on startup </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Kuhu Shukla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12415">HADOOP-12415</a> </td>
<td align="left"> hdfs and nfs builds broken on -missing compile-time dependency on netty </td>
<td align="left"> Major </td>
<td align="left"> nfs </td>
<td align="left"> Konstantin Boudnik </td>
<td align="left"> Tom Zeng </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6549">MAPREDUCE-6549</a> </td>
<td align="left"> multibyte delimiters with LineRecordReader cause duplicate records </td>
<td align="left"> Major </td>
<td align="left"> mrv1, mrv2 </td>
<td align="left"> Dustin Cote </td>
<td align="left"> Wilfred Spiegelenburg </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9426">HDFS-9426</a> </td>
<td align="left"> Rollingupgrade finalization is not backward compatible </td>
<td align="left"> Blocker </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-9470">HDFS-9470</a> </td>
<td align="left"> Encryption zone on root not loaded from fsimage after NN restart </td>
<td align="left"> Critical </td>
<td align="left"> . </td>
<td align="left"> Xiao Chen </td>
<td align="left"> Xiao Chen </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9294">HDFS-9294</a> </td>
<td align="left"> DFSClient deadlock when close file and failed to renew lease </td>
<td align="left"> Blocker </td>
<td align="left"> hdfs-client </td>
<td align="left"> DENG FEI </td>
<td align="left"> Brahma Reddy Battula </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4348">YARN-4348</a> </td>
<td align="left"> ZKRMStateStore.syncInternal shouldn&#x2019;t wait for sync completion for avoiding blocking ZK&#x2019;s event thread </td>
<td align="left"> Blocker </td>
<td align="left"> . </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/YARN-4424">YARN-4424</a> </td>
<td align="left"> Fix deadlock in RMAppImpl </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Yesha Vora </td>
<td align="left"> Jian He </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4434">YARN-4434</a> </td>
<td align="left"> NodeManager Disk Checker parameter documentation is not correct </td>
<td align="left"> Minor </td>
<td align="left"> documentation, nodemanager </td>
<td align="left"> Takashi Ohnishi </td>
<td align="left"> Weiwei Yang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9445">HDFS-9445</a> </td>
<td align="left"> Datanode may deadlock while handling a bad volume </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Walter Su </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9574">HDFS-9574</a> </td>
<td align="left"> Reduce client failures during datanode restart </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
</tbody>
</table></div>
<div class="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-3580">YARN-3580</a> </td>
<td align="left"> [JDK 8] TestClientRMService.testGetLabelsToNodes fails </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Robert Kanter </td>
<td align="left"> Robert Kanter </td></tr>
</tbody>
</table></div>
<div class="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/YARN-3136">YARN-3136</a> </td>
<td align="left"> getTransferredContainers can be a bottleneck during AM registration </td>
<td align="left"> Major </td>
<td align="left"> scheduler </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Sunil Govindan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3700">YARN-3700</a> </td>
<td align="left"> ATS Web Performance issue at load time when large number of jobs </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager, webapp, yarn </td>
<td align="left"> Xuan Gong </td>
<td align="left"> Xuan Gong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3740">YARN-3740</a> </td>
<td align="left"> Fixed the typo with the configuration name: APPLICATION_HISTORY_PREFIX_MAX_APPS </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager, webapp, yarn </td>
<td align="left"> Xuan Gong </td>
<td align="left"> Xuan Gong </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3969">YARN-3969</a> </td>
<td align="left"> Allow jobs to be submitted to reservation that is active but does not have any allocations </td>
<td align="left"> Major </td>
<td align="left"> capacityscheduler, fairscheduler, resourcemanager </td>
<td align="left"> Subru Krishnan </td>
<td align="left"> Subru Krishnan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4092">YARN-4092</a> </td>
<td align="left"> RM HA UI redirection needs to be fixed when both RMs are in standby mode </td>
<td align="left"> Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> Xuan Gong </td>
<td align="left"> Xuan Gong </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2801">YARN-2801</a> </td>
<td align="left"> Add documentation for node labels feature </td>
<td align="left"> Major </td>
<td align="left"> documentation </td>
<td align="left"> Gururaj Shetty </td>
<td align="left"> Wangda Tan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3893">YARN-3893</a> </td>
<td align="left"> Both RM in active state when Admin#transitionToActive failure from refeshAll() </td>
<td align="left"> Critical </td>
<td align="left"> resourcemanager </td>
<td align="left"> Bibin A Chundatt </td>
<td align="left"> Bibin A Chundatt </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4101">YARN-4101</a> </td>
<td align="left"> RM should print alert messages if Zookeeper and Resourcemanager gets connection issue </td>
<td align="left"> Critical </td>
<td align="left"> yarn </td>
<td align="left"> Yesha Vora </td>
<td align="left"> Xuan Gong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2513">YARN-2513</a> </td>
<td align="left"> Host framework UIs in YARN for use with the ATS </td>
<td align="left"> Major </td>
<td align="left"> timelineserver </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-2902">YARN-2902</a> </td>
<td align="left"> Killing a container that is localizing can orphan resources in the DOWNLOADING state </td>
<td align="left"> Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Varun Saxena </td></tr>
</tbody>
</table></div></div>
</div>
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