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                       <h5>YARN</h5>
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                       <h5>YARN REST APIs</h5>
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<h1>Apache Hadoop Changelog</h1><section>
<h2><a name="Release_2.8.4_-_2018-05-15"></a>Release 2.8.4 - 2018-05-15</h2><section>
<h3><a name="IMPROVEMENTS:"></a>IMPROVEMENTS:</h3>
<table border="0" class="bodyTable">
<thead>

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

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12817">HADOOP-12817</a> </td>
<td align="left"> Enable TLS v1.1 and 1.2 </td>
<td align="left">  Major </td>
<td align="left"> security </td>
<td align="left"> Robert Kanter </td>
<td align="left"> Robert Kanter </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-11409">HDFS-11409</a> </td>
<td align="left"> DatanodeInfo getNetworkLocation and setNetworkLocation shoud use volatile instead of synchronized </td>
<td align="left">  Minor </td>
<td align="left"> performance </td>
<td align="left"> Chen Liang </td>
<td align="left"> Chen Liang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14246">HADOOP-14246</a> </td>
<td align="left"> Authentication Tokens should use SecureRandom instead of Random and 256 bit secrets </td>
<td align="left">  Major </td>
<td align="left"> security </td>
<td align="left"> Robert Kanter </td>
<td align="left"> Robert Kanter </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14920">HADOOP-14920</a> </td>
<td align="left"> KMSClientProvider won&#x2019;t work with KMS delegation token retrieved from non-Java client. </td>
<td align="left">  Major </td>
<td align="left"> kms </td>
<td align="left"> Xiaoyu Yao </td>
<td align="left"> Xiaoyu Yao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14987">HADOOP-14987</a> </td>
<td align="left"> Improve KMSClientProvider log around delegation token checking </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Xiaoyu Yao </td>
<td align="left"> Xiaoyu Yao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7495">YARN-7495</a> </td>
<td align="left"> Improve robustness of the AggregatedLogDeletionService </td>
<td align="left">  Major </td>
<td align="left"> log-aggregation </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-7678">YARN-7678</a> </td>
<td align="left"> Ability to enable logging of container memory stats </td>
<td align="left">  Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Jim Brennan </td>
<td align="left"> Jim Brennan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7590">YARN-7590</a> </td>
<td align="left"> Improve container-executor validation check </td>
<td align="left">  Major </td>
<td align="left"> security, yarn </td>
<td align="left"> Eric Yang </td>
<td align="left"> Eric Yang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15212">HADOOP-15212</a> </td>
<td align="left"> Add independent secret manager method for logging expired tokens </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="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7728">YARN-7728</a> </td>
<td align="left"> Expose container preemptions related information in Capacity Scheduler queue metrics </td>
<td align="left">  Major </td>
<td align="left"> . </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/MAPREDUCE-7048">MAPREDUCE-7048</a> </td>
<td align="left"> Uber AM can crash due to unknown task in statusUpdate </td>
<td align="left">  Major </td>
<td align="left"> mr-am </td>
<td align="left"> Peter Bacsko </td>
<td align="left"> Peter Bacsko </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-13972">HADOOP-13972</a> </td>
<td align="left"> ADLS to support per-store configuration </td>
<td align="left">  Major </td>
<td align="left"> fs/adl </td>
<td align="left"> John Zhuge </td>
<td align="left"> Sharad Sonker </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7813">YARN-7813</a> </td>
<td align="left"> Capacity Scheduler Intra-queue Preemption should be configurable for each queue </td>
<td align="left">  Major </td>
<td align="left"> capacity scheduler, scheduler preemption </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/HDFS-11187">HDFS-11187</a> </td>
<td align="left"> Optimize disk access for last partial chunk checksum of Finalized replica </td>
<td align="left">  Major </td>
<td align="left"> datanode </td>
<td align="left"> Wei-Chiu Chuang </td>
<td align="left"> Gabor Bota </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15279">HADOOP-15279</a> </td>
<td align="left"> increase maven heap size recommendations </td>
<td align="left">  Minor </td>
<td align="left"> build, documentation, test </td>
<td align="left"> Allen Wittenauer </td>
<td align="left"> Allen Wittenauer </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12884">HDFS-12884</a> </td>
<td align="left"> BlockUnderConstructionFeature.truncateBlock should be of type BlockInfo </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> Konstantin Shvachko </td>
<td align="left"> chencan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14841">HADOOP-14841</a> </td>
<td align="left"> Kms client should disconnect if unable to get output stream from connection. </td>
<td align="left">  Major </td>
<td align="left"> kms </td>
<td align="left"> Xiao Chen </td>
<td align="left"> Rushabh S Shah </td></tr>
</tbody>
</table></section><section>
<h3><a name="BUG_FIXES:"></a>BUG FIXES:</h3>
<table border="0" class="bodyTable">
<thead>

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

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-13988">HADOOP-13988</a> </td>
<td align="left"> KMSClientProvider does not work with WebHDFS and Apache Knox w/ProxyUser </td>
<td align="left">  Major </td>
<td align="left"> common, kms </td>
<td align="left"> Greg Senia </td>
<td align="left"> Xiaoyu Yao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14029">HADOOP-14029</a> </td>
<td align="left"> Fix KMSClientProvider for non-secure proxyuser use case </td>
<td align="left">  Major </td>
<td align="left"> kms </td>
<td align="left"> Xiaoyu Yao </td>
<td align="left"> Xiaoyu Yao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12614">HDFS-12614</a> </td>
<td align="left"> FSPermissionChecker#getINodeAttrs() throws NPE when INodeAttributesProvider configured </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Manoj Govindassamy </td>
<td align="left"> Manoj Govindassamy </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7489">YARN-7489</a> </td>
<td align="left"> ConcurrentModificationException in RMAppImpl#getRMAppMetrics </td>
<td align="left">  Major </td>
<td align="left"> capacityscheduler </td>
<td align="left"> Tao Yang </td>
<td align="left"> Tao Yang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7525">YARN-7525</a> </td>
<td align="left"> Incorrect query parameters in cluster nodes REST API document </td>
<td align="left">  Minor </td>
<td align="left"> documentation </td>
<td align="left"> Tao Yang </td>
<td align="left"> Tao Yang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12754">HDFS-12754</a> </td>
<td align="left"> Lease renewal can hit a deadlock </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Kuhu Shukla </td>
<td align="left"> Kuhu Shukla </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-11754">HDFS-11754</a> </td>
<td align="left"> Make FsServerDefaults cache configurable. </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Rushabh S Shah </td>
<td align="left"> Mikhail Erofeev </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5124">MAPREDUCE-5124</a> </td>
<td align="left"> AM lacks flow control for task events </td>
<td align="left">  Major </td>
<td align="left"> mr-am </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Peter Bacsko </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12833">HDFS-12833</a> </td>
<td align="left"> Distcp : Update the usage of delete option for dependency with update and overwrite option </td>
<td align="left">  Minor </td>
<td align="left"> distcp, hdfs </td>
<td align="left"> Harshakiran Reddy </td>
<td align="left"> usharani </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12907">HDFS-12907</a> </td>
<td align="left"> Allow read-only access to reserved raw for non-superusers </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> Daryn Sharp </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/HDFS-12881">HDFS-12881</a> </td>
<td align="left"> Output streams closed with IOUtils suppressing write errors </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Ajay Kumar </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7595">YARN-7595</a> </td>
<td align="left"> Container launching code suppresses close exceptions after writes </td>
<td align="left">  Major </td>
<td align="left"> nodemanager </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Jim Brennan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7661">YARN-7661</a> </td>
<td align="left"> NodeManager metrics return wrong value after update node resource </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Yang Wang </td>
<td align="left"> Yang Wang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12347">HDFS-12347</a> </td>
<td align="left"> TestBalancerRPCDelay#testBalancerRPCDelay fails very frequently </td>
<td align="left">  Critical </td>
<td align="left"> test </td>
<td align="left"> Xiao Chen </td>
<td align="left"> Bharat Viswanadham </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15143">HADOOP-15143</a> </td>
<td align="left"> NPE due to Invalid KerberosTicket in UGI </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Jitendra Nath Pandey </td>
<td align="left"> Mukul Kumar Singh </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-7028">MAPREDUCE-7028</a> </td>
<td align="left"> Concurrent task progress updates causing NPE in Application Master </td>
<td align="left">  Blocker </td>
<td align="left"> mr-am </td>
<td align="left"> Gergo Repas </td>
<td align="left"> Gergo Repas </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7619">YARN-7619</a> </td>
<td align="left"> Max AM Resource value in Capacity Scheduler UI has to be refreshed for every user </td>
<td align="left">  Major </td>
<td align="left"> capacity scheduler, yarn </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-7663">YARN-7663</a> </td>
<td align="left"> RMAppImpl:Invalid event: START at KILLED </td>
<td align="left">  Major </td>
<td align="left"> resourcemanager </td>
<td align="left"> lujie </td>
<td align="left"> lujie </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-6948">YARN-6948</a> </td>
<td align="left"> Invalid event: ATTEMPT_ADDED at FINAL_SAVING </td>
<td align="left">  Major </td>
<td align="left"> yarn </td>
<td align="left"> lujie </td>
<td align="left"> lujie </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-6804">HDFS-6804</a> </td>
<td align="left"> Add test for race condition between transferring block and appending block causes &#x201c;Unexpected checksum mismatch exception&#x201d; </td>
<td align="left">  Major </td>
<td align="left"> datanode </td>
<td align="left"> Gordon Wang </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-9049">HDFS-9049</a> </td>
<td align="left"> Make Datanode Netty reverse proxy port to be configurable </td>
<td align="left">  Major </td>
<td align="left"> datanode </td>
<td align="left"> Vinayakumar B </td>
<td align="left"> Vinayakumar B </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15150">HADOOP-15150</a> </td>
<td align="left"> in FsShell, UGI params should be overidden through env vars(-D arg) </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Brahma Reddy Battula </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/HADOOP-15181">HADOOP-15181</a> </td>
<td align="left"> Typo in SecureMode.md </td>
<td align="left">  Trivial </td>
<td align="left"> documentation </td>
<td align="left"> Masahiro Tanaka </td>
<td align="left"> Masahiro Tanaka </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7102">YARN-7102</a> </td>
<td align="left"> NM heartbeat stuck when responseId overflows MAX_INT </td>
<td align="left">  Critical </td>
<td align="left"> . </td>
<td align="left"> Botong Huang </td>
<td align="left"> Botong Huang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-7020">MAPREDUCE-7020</a> </td>
<td align="left"> Task timeout in uber mode can crash AM </td>
<td align="left">  Major </td>
<td align="left"> mr-am </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Peter Bacsko </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-13100">HDFS-13100</a> </td>
<td align="left"> Handle IllegalArgumentException when GETSERVERDEFAULTS is not implemented in webhdfs. </td>
<td align="left">  Critical </td>
<td align="left"> hdfs, webhdfs </td>
<td align="left"> Yongjun Zhang </td>
<td align="left"> Yongjun Zhang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7849">YARN-7849</a> </td>
<td align="left"> TestMiniYarnClusterNodeUtilization#testUpdateNodeUtilization fails due to heartbeat sync error </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Jason Lowe </td>
<td align="left"> Botong Huang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-13120">HDFS-13120</a> </td>
<td align="left"> Snapshot diff could be corrupted after concat </td>
<td align="left">  Major </td>
<td align="left"> namenode, snapshots </td>
<td align="left"> Xiaoyu Yao </td>
<td align="left"> Xiaoyu Yao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-10453">HDFS-10453</a> </td>
<td align="left"> ReplicationMonitor thread could stuck for long time due to the race between replication and delete of same file in a large cluster. </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> He Xiaoqiao </td>
<td align="left"> He Xiaoqiao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8693">HDFS-8693</a> </td>
<td align="left"> refreshNamenodes does not support adding a new standby to a running DN </td>
<td align="left">  Critical </td>
<td align="left"> datanode, ha </td>
<td align="left"> Jian Fang </td>
<td align="left"> Ajith S </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-7052">MAPREDUCE-7052</a> </td>
<td align="left"> TestFixedLengthInputFormat#testFormatCompressedIn is flaky </td>
<td align="left">  Major </td>
<td align="left"> client, test </td>
<td align="left"> Peter Bacsko </td>
<td align="left"> Peter Bacsko </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-13112">HDFS-13112</a> </td>
<td align="left"> Token expiration edits may cause log corruption or deadlock </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/MAPREDUCE-7053">MAPREDUCE-7053</a> </td>
<td align="left"> Timed out tasks can fail to produce thread dump </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/HADOOP-15206">HADOOP-15206</a> </td>
<td align="left"> BZip2 drops and duplicates records when input split size is small </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Aki Tanaka </td>
<td align="left"> Aki Tanaka </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7947">YARN-7947</a> </td>
<td align="left"> Capacity Scheduler intra-queue preemption can NPE for non-schedulable apps </td>
<td align="left">  Major </td>
<td align="left"> capacity scheduler, scheduler preemption </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/HADOOP-14903">HADOOP-14903</a> </td>
<td align="left"> Add json-smart explicitly to pom.xml </td>
<td align="left">  Major </td>
<td align="left"> common </td>
<td align="left"> Ray Chiang </td>
<td align="left"> Ray Chiang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12070">HDFS-12070</a> </td>
<td align="left"> Failed block recovery leaves files open indefinitely and at risk for data loss </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Daryn Sharp </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-15283">HADOOP-15283</a> </td>
<td align="left"> Upgrade from findbugs 3.0.1 to spotbugs 3.1.2 in branch-2 to fix docker image build </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Xiao Chen </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-13164">HDFS-13164</a> </td>
<td align="left"> File not closed if streamer fail with DSQuotaExceededException </td>
<td align="left">  Major </td>
<td align="left"> hdfs-client </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-13109">HDFS-13109</a> </td>
<td align="left"> Support fully qualified hdfs path in EZ commands </td>
<td align="left">  Major </td>
<td align="left"> hdfs </td>
<td align="left"> Hanisha Koneru </td>
<td align="left"> Hanisha Koneru </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6930">MAPREDUCE-6930</a> </td>
<td align="left"> mapreduce.map.cpu.vcores and mapreduce.reduce.cpu.vcores are both present twice in mapred-default.xml </td>
<td align="left">  Major </td>
<td align="left"> mrv2 </td>
<td align="left"> Daniel Templeton </td>
<td align="left"> Sen Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12156">HDFS-12156</a> </td>
<td align="left"> TestFSImage fails without -Pnative </td>
<td align="left">  Major </td>
<td align="left"> test </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/YARN-8054">YARN-8054</a> </td>
<td align="left"> Improve robustness of the LocalDirsHandlerService MonitoringTimerTask thread </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Eagles </td>
<td align="left"> Jonathan Eagles </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-13195">HDFS-13195</a> </td>
<td align="left"> DataNode conf page  cannot display the current value after reconfig </td>
<td align="left">  Minor </td>
<td align="left"> datanode </td>
<td align="left"> maobaolong </td>
<td align="left"> maobaolong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12862">HADOOP-12862</a> </td>
<td align="left"> LDAP Group Mapping over SSL can not specify trust store </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Wei-Chiu Chuang </td>
<td align="left"> Wei-Chiu Chuang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15317">HADOOP-15317</a> </td>
<td align="left"> Improve NetworkTopology chooseRandom&#x2019;s loop </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Xiao Chen </td>
<td align="left"> Xiao Chen </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-13427">HDFS-13427</a> </td>
<td align="left"> Fix the section titles of transparent encryption document </td>
<td align="left">  Minor </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/YARN-8120">YARN-8120</a> </td>
<td align="left"> JVM can crash with SIGSEGV when exiting due to custom leveldb logger </td>
<td align="left">  Major </td>
<td align="left"> nodemanager, 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-8147">YARN-8147</a> </td>
<td align="left"> TestClientRMService#testGetApplications sporadically fails </td>
<td align="left">  Major </td>
<td align="left"> test </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-14970">HADOOP-14970</a> </td>
<td align="left"> MiniHadoopClusterManager doesn&#x2019;t respect lack of format option </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Erik Krogen </td>
<td align="left"> Erik Krogen </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15180">HADOOP-15180</a> </td>
<td align="left"> branch-2 : daemon processes&#x2019; sysout overwrites &#x2018;ulimit -a&#x2019; in daemon&#x2019;s out file </td>
<td align="left">  Minor </td>
<td align="left"> scripts </td>
<td align="left"> Ranith Sardar </td>
<td align="left"> Ranith Sardar </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-10183">HDFS-10183</a> </td>
<td align="left"> Prevent race condition during class initialization </td>
<td align="left">  Minor </td>
<td align="left"> fs </td>
<td align="left"> Pavel Avgustinov </td>
<td align="left"> Pavel Avgustinov </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15390">HADOOP-15390</a> </td>
<td align="left"> Yarn RM logs flooded by DelegationTokenRenewer trying to renew KMS tokens </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/HADOOP-15385">HADOOP-15385</a> </td>
<td align="left"> Many tests are failing in hadoop-distcp project in branch-2 </td>
<td align="left">  Critical </td>
<td align="left"> tools/distcp </td>
<td align="left"> Rushabh S Shah </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-7073">MAPREDUCE-7073</a> </td>
<td align="left"> Optimize TokenCache#obtainTokensForNamenodesInternal </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Bibin A Chundatt </td>
<td align="left"> Bibin A Chundatt </td></tr>
</tbody>
</table></section><section>
<h3><a name="SUB-TASKS:"></a>SUB-TASKS:</h3>
<table border="0" class="bodyTable">
<thead>

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

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-13174">HADOOP-13174</a> </td>
<td align="left"> Add more debug logs for delegation tokens and authentication </td>
<td align="left">  Minor </td>
<td align="left"> security </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/HADOOP-14799">HADOOP-14799</a> </td>
<td align="left"> Update nimbus-jose-jwt to 4.41.1 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Ray Chiang </td>
<td align="left"> Ray Chiang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12396">HDFS-12396</a> </td>
<td align="left"> Webhdfs file system should get delegation token from kms provider. </td>
<td align="left">  Major </td>
<td align="left"> encryption, kms, webhdfs </td>
<td align="left"> Rushabh S Shah </td>
<td align="left"> Rushabh S Shah </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12574">HDFS-12574</a> </td>
<td align="left"> Add CryptoInputStream to WebHdfsFileSystem read call. </td>
<td align="left">  Major </td>
<td align="left"> encryption, kms, webhdfs </td>
<td align="left"> Rushabh S Shah </td>
<td align="left"> Rushabh S Shah </td></tr>
</tbody>
</table></section><section>
<h3><a name="OTHER:"></a>OTHER:</h3>
<table border="0" class="bodyTable">
<thead>

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

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-15177">HADOOP-15177</a> </td>
<td align="left"> Update the release year to 2018 </td>
<td align="left">  Blocker </td>
<td align="left"> build </td>
<td align="left"> Akira Ajisaka </td>
<td align="left"> Bharat Viswanadham </td></tr>
</tbody>
</table></section></section>
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