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| <h1>Apache Hadoop Changelog</h1> |
| <div class="section"> |
| <h2><a name="Release_2.7.5_-_2017-12-14"></a>Release 2.7.5 - 2017-12-14</h2> |
| <div class="section"> |
| <h3><a name="IMPORTANT_ISSUES:"></a>IMPORTANT ISSUES:</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-6959">YARN-6959</a> </td> |
| <td align="left"> RM may allocate wrong AM Container for new attempt </td> |
| <td align="left"> Major </td> |
| <td align="left"> capacity scheduler, fairscheduler, scheduler </td> |
| <td align="left"> Yuqi Wang </td> |
| <td align="left"> Yuqi Wang </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-8829">HDFS-8829</a> </td> |
| <td align="left"> Make SO_RCVBUF and SO_SNDBUF size configurable for DataTransferProtocol sockets and allow configuring auto-tuning </td> |
| <td align="left"> Major </td> |
| <td align="left"> datanode </td> |
| <td align="left"> He Tianyi </td> |
| <td align="left"> He Tianyi </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-13442">HADOOP-13442</a> </td> |
| <td align="left"> Optimize UGI group lookups </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </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-6937">MAPREDUCE-6937</a> </td> |
| <td align="left"> Backport MAPREDUCE-6870 to branch-2 while preserving compatibility </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Zhe Zhang </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-14827">HADOOP-14827</a> </td> |
| <td align="left"> Allow StopWatch to accept a Timer parameter for tests </td> |
| <td align="left"> Minor </td> |
| <td align="left"> common, test </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/HDFS-12131">HDFS-12131</a> </td> |
| <td align="left"> Add some of the FSNamesystem JMX values as metrics </td> |
| <td align="left"> Minor </td> |
| <td align="left"> hdfs, namenode </td> |
| <td align="left"> Erik Krogen </td> |
| <td align="left"> Erik Krogen </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8865">HDFS-8865</a> </td> |
| <td align="left"> Improve quota initialization performance </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Kihwal Lee </td> |
| <td align="left"> Kihwal Lee </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12420">HDFS-12420</a> </td> |
| <td align="left"> Add an option to disallow ‘namenode format -force’ </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Ajay Kumar </td> |
| <td align="left"> Ajay Kumar </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6975">MAPREDUCE-6975</a> </td> |
| <td align="left"> Logging task counters </td> |
| <td align="left"> Major </td> |
| <td align="left"> task </td> |
| <td align="left"> Prabhu Joseph </td> |
| <td align="left"> Prabhu Joseph </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12823">HDFS-12823</a> </td> |
| <td align="left"> Backport HDFS-9259 “Make SO_SNDBUF size configurable at DFSClient” to branch-2.7 </td> |
| <td align="left"> Major </td> |
| <td align="left"> hdfs, hdfs-client </td> |
| <td align="left"> Erik Krogen </td> |
| <td align="left"> Erik Krogen </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/MAPREDUCE-6165">MAPREDUCE-6165</a> </td> |
| <td align="left"> [JDK8] TestCombineFileInputFormat failed on JDK8 </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Wei Yan </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-8797">HDFS-8797</a> </td> |
| <td align="left"> WebHdfsFileSystem creates too many connections for pread </td> |
| <td align="left"> Major </td> |
| <td align="left"> webhdfs </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-9003">HDFS-9003</a> </td> |
| <td align="left"> ForkJoin thread pool leaks </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/HDFS-9107">HDFS-9107</a> </td> |
| <td align="left"> Prevent NN’s unrecoverable death spiral after full GC </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-6750">MAPREDUCE-6750</a> </td> |
| <td align="left"> TestHSAdminServer.testRefreshSuperUserGroups is failing </td> |
| <td align="left"> Minor </td> |
| <td align="left"> test </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/HDFS-10738">HDFS-10738</a> </td> |
| <td align="left"> Fix TestRefreshUserMappings.testRefreshSuperUserGroupsConfiguration test failure </td> |
| <td align="left"> Major </td> |
| <td align="left"> test </td> |
| <td align="left"> Rakesh R </td> |
| <td align="left"> Rakesh R </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14702">HADOOP-14702</a> </td> |
| <td align="left"> Fix formatting issue and regression caused by conversion from APT to Markdown </td> |
| <td align="left"> Minor </td> |
| <td align="left"> documentation </td> |
| <td align="left"> Doris Gu </td> |
| <td align="left"> Doris Gu </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12157">HDFS-12157</a> </td> |
| <td align="left"> Do fsyncDirectory(..) outside of FSDataset lock </td> |
| <td align="left"> Critical </td> |
| <td align="left"> datanode </td> |
| <td align="left"> Vinayakumar B </td> |
| <td align="left"> Vinayakumar B </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6931">MAPREDUCE-6931</a> </td> |
| <td align="left"> Remove TestDFSIO “Total Throughput” calculation </td> |
| <td align="left"> Critical </td> |
| <td align="left"> benchmarks, test </td> |
| <td align="left"> Dennis Huo </td> |
| <td align="left"> Dennis Huo </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14867">HADOOP-14867</a> </td> |
| <td align="left"> Update HDFS Federation setup document, for incorrect property name for secondary name node http address </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Bharat Viswanadham </td> |
| <td align="left"> Bharat Viswanadham </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6957">MAPREDUCE-6957</a> </td> |
| <td align="left"> shuffle hangs after a node manager connection timeout </td> |
| <td align="left"> Major </td> |
| <td align="left"> mrv2 </td> |
| <td align="left"> Jooseong Kim </td> |
| <td align="left"> Jooseong Kim </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12323">HDFS-12323</a> </td> |
| <td align="left"> NameNode terminates after full GC thinking QJM unresponsive if full GC is much longer than timeout </td> |
| <td align="left"> Major </td> |
| <td align="left"> namenode, qjm </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/YARN-5195">YARN-5195</a> </td> |
| <td align="left"> RM intermittently crashed with NPE while handling APP_ATTEMPT_REMOVED event when async-scheduling enabled in CapacityScheduler </td> |
| <td align="left"> Major </td> |
| <td align="left"> resourcemanager </td> |
| <td align="left"> Karam Singh </td> |
| <td align="left"> sandflee </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14902">HADOOP-14902</a> </td> |
| <td align="left"> LoadGenerator#genFile write close timing is incorrectly calculated </td> |
| <td align="left"> Major </td> |
| <td align="left"> fs </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Hanisha Koneru </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-7084">YARN-7084</a> </td> |
| <td align="left"> TestSchedulingMonitor#testRMStarts fails sporadically </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-12578">HDFS-12578</a> </td> |
| <td align="left"> TestDeadDatanode#testNonDFSUsedONDeadNodeReReg failing in branch-2.7 </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> test </td> |
| <td align="left"> Xiao Chen </td> |
| <td align="left"> Ajay Kumar </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-14919">HADOOP-14919</a> </td> |
| <td align="left"> BZip2 drops records when reading data in splits </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Aki Tanaka </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-12832">HDFS-12832</a> </td> |
| <td align="left"> INode.getFullPathName may throw ArrayIndexOutOfBoundsException lead to NameNode exit </td> |
| <td align="left"> Critical </td> |
| <td align="left"> namenode </td> |
| <td align="left"> DENG FEI </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12638">HDFS-12638</a> </td> |
| <td align="left"> Delete copy-on-truncate block along with the original block, when deleting a file being truncated </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> hdfs </td> |
| <td align="left"> Jiandan Yang </td> |
| <td align="left"> Konstantin Shvachko </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/HDFS-9153">HDFS-9153</a> </td> |
| <td align="left"> Pretty-format the output for DFSIO </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Kai Zheng </td> |
| <td align="left"> Kai Zheng </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-12596">HDFS-12596</a> </td> |
| <td align="left"> Add TestFsck#testFsckCorruptWhenOneReplicaIsCorrupt back to branch-2.7 </td> |
| <td align="left"> Major </td> |
| <td align="left"> test </td> |
| <td align="left"> Xiao Chen </td> |
| <td align="left"> Xiao Chen </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/HDFS-10711">HDFS-10711</a> </td> |
| <td align="left"> Optimize FSPermissionChecker group membership check </td> |
| <td align="left"> Major </td> |
| <td align="left"> hdfs </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-14881">HADOOP-14881</a> </td> |
| <td align="left"> LoadGenerator should use Time.monotonicNow() to measure durations </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Chetna Chaudhari </td> |
| <td align="left"> Bharat Viswanadham </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-5402">YARN-5402</a> </td> |
| <td align="left"> Fix NoSuchMethodError in ClusterMetricsInfo </td> |
| <td align="left"> Major </td> |
| <td align="left"> webapp </td> |
| <td align="left"> Weiwei Yang </td> |
| <td align="left"> Weiwei Yang </td></tr> |
| </tbody> |
| </table></div> |
| <div class="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/HDFS-10984">HDFS-10984</a> </td> |
| <td align="left"> Expose nntop output as metrics </td> |
| <td align="left"> Major </td> |
| <td align="left"> namenode </td> |
| <td align="left"> Siddharth Wagle </td> |
| <td align="left"> Siddharth Wagle </td></tr> |
| </tbody> |
| </table></div></div> |
| </div> |
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