Project: Apache Hadoop (App Definition and Development / Database)
File: CHANGELOG.2.7.5.md

<! --> | JIRA | Summary | Priority | Component | Reporter | Contributor | |:- |:- | : |:- |:- |:- | | | RM may allocate wrong AM Container for new attempt | Major | capacity scheduler, fairscheduler, scheduler | Yuqi Wang | Yuqi Wang | | JIRA | Summary | Priority | Component | Reporter | Contributor | |:- |:- | : |:- |:- |:- | | | Make SO\RCVBUF and SO\SNDBUF size configurable for DataTransferProtocol sockets and allow configuring auto-tuning | Major | datanode | He Tianyi | He Tianyi | | | Optimize UGI group lookups | Major | . | Daryn Sharp | Daryn Sharp | | | Backport MAPREDUCE-6870 to branch-2 while preserving compatibility | Major | . | Zhe Zhang | Peter Bacsko | | | Allow StopWatch to accept a Timer parameter for tests | Minor | common, test | Erik Krogen | Erik Krogen | | | Add some of the FSNamesystem JMX values as metrics | Minor | hdfs, namenode | Erik Krogen | Erik Krogen | | | Improve quota initialization performance | Major | . | Kihwal Lee | Kihwal Lee | | | Add an option to disallow 'namenode format -force' | Major | . | Ajay Kumar | Ajay Kumar | | | Logging task counters | Major | task | Prabhu Joseph | Prabhu Joseph | | | Backport HDFS-9259 "Make SO\_SNDBUF size configurable at DFSClient" to branch-2.7 | Major | hdfs, hdfs-client | Erik Krogen | Erik Krogen | | JIRA | Summary | Priority | Component | Reporter | Contributor | |:- |:- | : |:- |:- |:- | | | [JDK8] TestCombineFileInputFormat failed on JDK8 | Minor | . | Wei Yan | Akira Ajisaka | | | WebHdfsFileSystem creates too many connections for pread | Major | webhdfs | Jing Zhao | Jing Zhao | | | ForkJoin thread pool leaks | Major | . | Kihwal Lee | Kihwal Lee | | | Prevent NN's unrecoverable death spiral after full GC | Critical | namenode | Daryn Sharp | Daryn Sharp | | | TestHSAdminServer.testRefreshSuperUserGroups is failing | Minor | test | Kihwal Lee | Kihwal Lee | | | Fix TestRefreshUserMappings.testRefreshSuperUserGroupsConfiguration test failure | Major | test | Rakesh R | Rakesh R | | | Fix formatting issue and regression caused by conversion from APT to Markdown | Minor | documentation | Doris Gu | Doris Gu | | | Do

outside of FSDataset lock | Critical | datanode | Vinayakumar B | Vinayakumar B | | | Remove TestDFSIO "Total Throughput" calculation | Critical | benchmarks, test | Dennis Huo | Dennis Huo | | | Update HDFS Federation setup document, for incorrect property name for secondary name node http address | Major | . | Bharat Viswanadham | Bharat Viswanadham | | | shuffle hangs after a node manager connection timeout | Major | mrv2 | Jooseong Kim | Jooseong Kim | | | NameNode terminates after full GC thinking QJM unresponsive if full GC is much longer than timeout | Major | namenode, qjm | Erik Krogen | Erik Krogen | | | RM intermittently crashed with NPE while handling APP\ATTEMPT\REMOVED event when async-scheduling enabled in CapacityScheduler | Major | resourcemanager | Karam Singh | sandflee | | | LoadGenerator#genFile write close timing is incorrectly calculated | Major | fs | Jason Lowe | Hanisha Koneru | | | TestSchedulingMonitor#testRMStarts fails sporadically | Major | . | Jason Lowe | Jason Lowe | | | TestDeadDatanode#testNonDFSUsedONDeadNodeReReg failing in branch-2.7 | Blocker | test | Xiao Chen | Ajay Kumar | | | BZip2 drops records when reading data in splits | Critical | . | Aki Tanaka | Jason Lowe | | | INode.getFullPathName may throw ArrayIndexOutOfBoundsException lead to NameNode exit | Critical | namenode | DENG FEI | Konstantin Shvachko | | | Delete copy-on-truncate block along with the original block, when deleting a file being truncated | Blocker | hdfs | Jiandan Yang | Konstantin Shvachko | | JIRA | Summary | Priority | Component | Reporter | Contributor | |:- |:- | : |:- |:- |:- | | | Pretty-format the output for DFSIO | Major | . | Kai Zheng | Kai Zheng | | | Add TestFsck#testFsckCorruptWhenOneReplicaIsCorrupt back to branch-2.7 | Major | test | Xiao Chen | Xiao Chen | | JIRA | Summary | Priority | Component | Reporter | Contributor | |:- |:- | : |:- |:- |:- | | | Optimize FSPermissionChecker group membership check | Major | hdfs | Daryn Sharp | Daryn Sharp | | | LoadGenerator should use Time.monotonicNow() to measure durations | Major | . | Chetna Chaudhari | Bharat Viswanadham | | | Fix NoSuchMethodError in ClusterMetricsInfo | Major | webapp | Weiwei Yang | Weiwei Yang | | JIRA | Summary | Priority | Component | Reporter | Contributor | |:- |:- | : |:- |:- |:- | | | Expose nntop output as metrics | Major | namenode | Siddharth Wagle | Siddharth Wagle |