Apache Hadoop Changelog

Release 2.1.1-beta - 2013-09-16

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-707	Add user info in the YARN ClientToken	Blocker	.	Bikas Saha	Jason Lowe
YARN-1170	yarn proto definitions should specify package as 'hadoop.yarn'	Blocker	.	Arun C Murthy	Binglin Chang
HADOOP-9944	RpcRequestHeaderProto defines callId as uint32 while ipc.Client.CONNECTION_CONTEXT_CALL_ID is signed (-3)	Blocker	.	Arun C Murthy	Arun C Murthy

NEW FEATURES:

JIRA	Summary	Priority	Component	Reporter	Contributor
HADOOP-9789	Support server advertised kerberos principals	Critical	ipc, security	Daryn Sharp	Daryn Sharp
HDFS-5076	Add MXBean methods to query NN's transaction information and JournalNode's journal status	Minor	.	Jing Zhao	Jing Zhao
HDFS-5118	Provide testing support for DFSClient to drop RPC responses	Major	.	Jing Zhao	Jing Zhao

IMPROVEMENTS:

JIRA	Summary	Priority	Component	Reporter	Contributor
HADOOP-8814	Inefficient comparison with the empty string. Use isEmpty() instead	Minor	conf, fs, fs/s3, ha, io, metrics, performance, record, security, util	Brandon Li	Brandon Li
MAPREDUCE-1981	Improve getSplits performance by using listLocatedStatus	Major	job submission	Hairong Kuang	Hairong Kuang
HADOOP-9803	Add generic type parameter to RetryInvocationHandler	Minor	ipc	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-758	Augment MockNM to use multiple cores	Minor	.	Bikas Saha	Karthik Kambatla
MAPREDUCE-5367	Local jobs all use same local working directory	Major	.	Sandy Ryza	Sandy Ryza
HDFS-5061	Make FSNameSystem#auditLoggers an unmodifiable list	Major	namenode	Arpit Agarwal	Arpit Agarwal
HDFS-4905	Add appendToFile command to "hdfs dfs"	Minor	tools	Arpit Agarwal	Arpit Agarwal
HADOOP-9821	ClientId should have getMsb/getLsb methods	Minor	.	Tsuyoshi Ozawa	Tsuyoshi Ozawa
HDFS-4926	namenode webserver's page has a tooltip that is inconsistent with the datanode HTML link	Trivial	namenode	Joseph Lorenzini	Vivek Ganesan
HADOOP-9833	move slf4j to version 1.7.5	Minor	build	Steve Loughran	Kousuke Saruta
HADOOP-9831	Make checknative shell command accessible on Windows.	Minor	bin	Chris Nauroth	Chris Nauroth
YARN-589	Expose a REST API for monitoring the fair scheduler	Major	scheduler	Sandy Ryza	Sandy Ryza
HADOOP-9672	Upgrade Avro dependency to 1.7.4	Major	.	Sandy Ryza	Sandy Ryza
HADOOP-9802	Support Snappy codec on Windows.	Major	io	Chris Nauroth	Chris Nauroth
HADOOP-9446	Support Kerberos HTTP SPNEGO authentication for non-SUN JDK	Major	security	Yu Gao	Yu Gao
HADOOP-9879	Move the version info of zookeeper dependencies to hadoop-project/pom	Minor	build	Karthik Kambatla	Karthik Kambatla
HADOOP-9686	Easy access to final parameters in Configuration	Major	conf	Jason Lowe	Jason Lowe
HADOOP-9886	Turn warning message in RetryInvocationHandler to debug	Minor	.	Arpit Gupta	Arpit Gupta
HDFS-5045	Add more unit tests for retry cache to cover all AtMostOnce methods	Minor	.	Jing Zhao	Jing Zhao
MAPREDUCE-5478	TeraInputFormat unnecessarily defines its own FileSplit subclass	Minor	examples	Sandy Ryza	Sandy Ryza
YARN-1074	Clean up YARN CLI app list to show only running apps.	Major	client	Tassapol Athiapinya	Xuan Gong
HDFS-3245	Add metrics and web UI for cluster version summary	Major	namenode	Todd Lipcon	Ravi Prakash
HDFS-5128	Allow multiple net interfaces to be used with HA namenode RPC server	Critical	.	Kihwal Lee	Kihwal Lee
YARN-1081	Minor improvement to output header for $ yarn node -list	Minor	client	Tassapol Athiapinya	Akira Ajisaka
YARN-1080	Improve help message for $ yarn logs	Major	client	Tassapol Athiapinya	Xuan Gong
YARN-1117	Improve help message for $ yarn applications and $yarn node	Major	client	Tassapol Athiapinya	Xuan Gong
HADOOP-9918	Add addIfService() to CompositeService	Minor	.	Karthik Kambatla	Karthik Kambatla
YARN-696	Enable multiple states to to be specified in Resource Manager apps REST call	Major	resourcemanager	Trevor Lorimer	Trevor Lorimer
YARN-910	Allow auxiliary services to listen for container starts and completions	Major	nodemanager	Sandy Ryza	Alejandro Abdelnur
HADOOP-9945	HAServiceState should have a state for stopped services	Minor	ha	Karthik Kambatla	Karthik Kambatla
YARN-1137	Add support whitelist for system users to Yarn container-executor.c	Major	nodemanager	Alejandro Abdelnur	Roman Shaposhnik
HADOOP-9962	in order to avoid dependency divergence within Hadoop itself lets enable DependencyConvergence	Major	build	Roman Shaposhnik	Roman Shaposhnik
MAPREDUCE-5379	Include token tracking ids in jobconf	Major	job submission, security	Sandy Ryza	Karthik Kambatla
HADOOP-9669	Reduce the number of byte array creations and copies in XDR data manipulation	Major	nfs	Tsz Wo Nicholas Sze	Haohui Mai
HDFS-4513	Clarify WebHDFS REST API that all JSON respsonses may contain additional properties	Minor	documentation, webhdfs	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze

BUG FIXES:

JIRA	Summary	Priority	Component	Reporter	Contributor
MAPREDUCE-3193	FileInputFormat doesn't read files recursively in the input path dir	Major	mrv1, mrv2	Ramgopal N	Devaraj K
MAPREDUCE-5358	MRAppMaster throws invalid transitions for JobImpl	Major	mr-am	Devaraj K	Devaraj K
HADOOP-9435	Support building the JNI code against the IBM JVM	Major	build	Tian Hong Wang	Tian Hong Wang
MAPREDUCE-5317	Stale files left behind for failed jobs	Major	mrv2	Ravi Prakash	Ravi Prakash
MAPREDUCE-5251	Reducer should not implicate map attempt if it has insufficient space to fetch map output	Major	mrv2	Jason Lowe	Ashwin Shankar
HADOOP-9768	chown and chgrp reject users and groups with spaces on platforms where spaces are otherwise acceptable	Major	fs	Chris Nauroth	Chris Nauroth
MAPREDUCE-5385	JobContext cache files api are broken	Blocker	.	Omkar Vinit Joshi	Omkar Vinit Joshi
YARN-948	RM should validate the release container list before actually releasing them	Major	.	Omkar Vinit Joshi	Omkar Vinit Joshi
YARN-966	The thread of ContainerLaunch#call will fail without any signal if getLocalizedResources() is called when the container is not at LOCALIZED	Major	.	Zhijie Shen	Zhijie Shen
HDFS-5043	For HdfsFileStatus, set default value of childrenNum to -1 instead of 0 to avoid confusing applications	Major	.	Brandon Li	Brandon Li
HADOOP-9806	PortmapInterface should check if the procedure is out-of-range	Major	nfs	Brandon Li	Brandon Li
MAPREDUCE-5428	HistoryFileManager doesn't stop threads when service is stopped	Major	jobhistoryserver, mrv2	Jason Lowe	Karthik Kambatla
HADOOP-9801	Configuration#writeXml uses platform defaulting encoding, which may mishandle multi-byte characters.	Major	conf	Chris Nauroth	Chris Nauroth
YARN-903	DistributedShell throwing Errors in logs after successfull completion	Major	applications/distributed-shell	Abhishek Kapoor	Omkar Vinit Joshi
HDFS-5028	LeaseRenewer throw java.util.ConcurrentModificationException when timeout	Major	.	yunjiong zhao	yunjiong zhao
MAPREDUCE-5440	TestCopyCommitter Fails on JDK7	Major	mrv2	Robert Parker	Robert Parker
MAPREDUCE-5446	TestJobHistoryEvents and TestJobHistoryParsing have race conditions	Major	mrv2, test	Jason Lowe	Jason Lowe
MAPREDUCE-5425	Junit in TestJobHistoryServer failing in jdk 7	Major	jobhistoryserver	Ashwin Shankar	Robert Parker
HDFS-5047	Supress logging of full stack trace of quota and lease exceptions	Major	namenode	Kihwal Lee	Robert Parker
HADOOP-9315	Port HADOOP-9249 hadoop-maven-plugins Clover fix to branch-2 to fix build failures	Major	build	Dennis Y	Chris Nauroth
HDFS-4993	fsck can fail if a file is renamed or deleted	Major	.	Kihwal Lee	Robert Parker
HADOOP-9757	Har metadata cache can grow without limit	Major	fs	Jason Lowe	Cristina L. Abad
HADOOP-9858	Remove unused private RawLocalFileSystem#execCommand method from branch-2.	Trivial	fs	Chris Nauroth	Chris Nauroth
HADOOP-9857	Tests block and sometimes timeout on Windows due to invalid entropy source.	Major	build, test	Chris Nauroth	Chris Nauroth
MAPREDUCE-5454	TestDFSIO fails intermittently on JDK7	Major	test	Karthik Kambatla	Karthik Kambatla
HDFS-5091	Support for spnego keytab separate from the JournalNode keytab for secure HA	Minor	.	Jing Zhao	Jing Zhao
YARN-337	RM handles killed application tracking URL poorly	Major	resourcemanager	Jason Lowe	Jason Lowe
HADOOP-9381	Document dfs cp -f option	Trivial	.	Keegan Witt	Keegan Witt
HDFS-5055	nn fails to download checkpointed image from snn in some setups	Blocker	namenode	Allen Wittenauer	Vinayakumar B
HDFS-4898	BlockPlacementPolicyWithNodeGroup.chooseRemoteRack() fails to properly fallback to local rack	Minor	namenode	Eric Sirianni	Tsz Wo Nicholas Sze
HDFS-4632	globStatus using backslash for escaping does not work on Windows	Major	test	Chris Nauroth	Chuan Liu
HDFS-5080	BootstrapStandby not working with QJM when the existing NN is active	Major	ha, qjm	Jing Zhao	Jing Zhao
HADOOP-9868	Server must not advertise kerberos realm	Blocker	ipc	Daryn Sharp	Daryn Sharp
HDFS-5099	Namenode#copyEditLogSegmentsToSharedDir should close EditLogInputStreams upon finishing	Major	namenode	Chuan Liu	Chuan Liu
HDFS-5100	TestNamenodeRetryCache fails on Windows due to incorrect cleanup	Minor	test	Chuan Liu	Chuan Liu
HDFS-5103	TestDirectoryScanner fails on Windows	Minor	test	Chuan Liu	Chuan Liu
HDFS-5102	Snapshot names should not be allowed to contain slash characters	Major	snapshots	Aaron T. Myers	Jing Zhao
HADOOP-9880	SASL changes from HADOOP-9421 breaks Secure HA NN	Blocker	.	Kihwal Lee	Daryn Sharp
HDFS-5106	TestDatanodeBlockScanner fails on Windows due to incorrect path format	Minor	test	Chuan Liu	Chuan Liu
YARN-107	ClientRMService.forceKillApplication() should handle the non-RUNNING applications properly	Major	resourcemanager	Devaraj K	Xuan Gong
HDFS-5105	TestFsck fails on Windows	Minor	.	Chuan Liu	Chuan Liu
YARN-643	WHY appToken is removed both in BaseFinalTransition and AMUnregisteredTransition AND clientToken is removed in FinalTransition and not BaseFinalTransition	Major	.	Jian He	Xuan Gong
YARN-1006	Nodes list web page on the RM web UI is broken	Major	.	Jian He	Xuan Gong
MAPREDUCE-5001	LocalJobRunner has race condition resulting in job failures	Major	.	Brock Noland	Sandy Ryza
HDFS-5111	Remove duplicated error message for snapshot commands when processing invalid arguments	Minor	snapshots	Jing Zhao	Jing Zhao
HDFS-4594	WebHDFS open sets Content-Length header to what is specified by length parameter rather than how much data is actually returned.	Minor	webhdfs	Arpit Gupta	Chris Nauroth
YARN-881	Priority#compareTo method seems to be wrong.	Major	.	Jian He	Jian He
YARN-1082	Secure RM with recovery enabled and rm state store on hdfs fails with gss exception	Blocker	resourcemanager	Arpit Gupta	Vinod Kumar Vavilapalli
MAPREDUCE-5468	AM recovery does not work for map only jobs	Blocker	.	Yesha Vora	Vinod Kumar Vavilapalli
HDFS-5124	DelegationTokenSecretManager#retrievePassword can cause deadlock in NameNode	Blocker	namenode	Deepesh Khandelwal	Daryn Sharp
HADOOP-9899	Remove the debug message added by HADOOP-8855	Minor	security	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
MAPREDUCE-5470	LocalJobRunner does not work on Windows.	Major	.	Chris Nauroth	Sandy Ryza
YARN-1094	RM restart throws Null pointer Exception in Secure Env	Blocker	.	Yesha Vora	Vinod Kumar Vavilapalli
YARN-1008	MiniYARNCluster with multiple nodemanagers, all nodes have same key for allocations	Major	nodemanager	Alejandro Abdelnur	Alejandro Abdelnur
YARN-1093	Corrections to Fair Scheduler documentation	Major	documentation	Wing Yew Poon
YARN-942	In Fair Scheduler documentation, inconsistency on which properties have prefix	Major	scheduler	Sandy Ryza	Akira Ajisaka
HDFS-5132	Deadlock in NameNode between SafeModeMonitor#run and DatanodeManager#handleHeartbeat	Blocker	namenode	Arpit Gupta	Kihwal Lee
YARN-1083	ResourceManager should fail when yarn.nm.liveness-monitor.expiry-interval-ms is set less than heartbeat interval	Major	resourcemanager	Yesha Vora	Zhijie Shen
YARN-602	NodeManager should mandatorily set some Environment variables into every containers that it launches	Major	.	Xuan Gong	Kenji Kikushima
YARN-994	HeartBeat thread in AMRMClientAsync does not handle runtime exception correctly	Major	.	Xuan Gong	Xuan Gong
HADOOP-9910	proxy server start and stop documentation wrong	Minor	.	André Kelpe
HADOOP-9906	Move HAZKUtil to o.a.h.util.ZKUtil and make inner-classes public	Minor	ha	Karthik Kambatla	Karthik Kambatla
YARN-1101	Active nodes can be decremented below 0	Major	resourcemanager	Robert Parker	Robert Parker
MAPREDUCE-5483	revert MAPREDUCE-5357	Major	distcp	Alejandro Abdelnur	Robert Kanter
HADOOP-9774	RawLocalFileSystem.listStatus() return absolute paths when input path is relative on Windows	Major	fs	shanyu zhao	shanyu zhao
HDFS-5140	Too many safemode monitor threads being created in the standby namenode causing it to fail with out of memory error	Blocker	ha	Arpit Gupta	Jing Zhao
YARN-981	YARN/MR2/Job-history /logs link does not have correct content	Major	.	Xuan Gong	Jian He
YARN-1120	Make ApplicationConstants.Environment.USER definition OS neutral	Minor	.	Chuan Liu	Chuan Liu
YARN-1077	TestContainerLaunch fails on Windows	Minor	.	Chuan Liu	Chuan Liu
HDFS-5150	Allow per NN SPN for internal SPNEGO.	Blocker	.	Kihwal Lee	Kihwal Lee
YARN-1124	By default yarn application -list should display all the applications in a state other than FINISHED / FAILED	Blocker	.	Omkar Vinit Joshi	Xuan Gong
HADOOP-9924	FileUtil.createJarWithClassPath() does not generate relative classpath correctly	Major	fs	shanyu zhao	shanyu zhao
HADOOP-9916	Race condition in ipc.Client causes TestIPC timeout	Minor	.	Binglin Chang	Binglin Chang
HADOOP-9932	Improper synchronization in RetryCache	Blocker	.	Kihwal Lee	Kihwal Lee
MAPREDUCE-5475	MRClientService does not verify ACLs properly	Blocker	mr-am, mrv2	Jason Lowe	Jason Lowe
HDFS-5159	Secondary NameNode fails to checkpoint if error occurs downloading edits on first checkpoint	Major	namenode	Aaron T. Myers	Aaron T. Myers
YARN-957	Capacity Scheduler tries to reserve the memory more than what node manager reports.	Blocker	.	Omkar Vinit Joshi	Omkar Vinit Joshi
YARN-1107	Job submitted with Delegation token in secured environment causes RM to fail during RM restart	Blocker	resourcemanager	Arpit Gupta	Omkar Vinit Joshi
MAPREDUCE-5414	TestTaskAttempt fails jdk7 with NullPointerException	Major	test	Nemon Lou	Nemon Lou
YARN-1144	Unmanaged AMs registering a tracking URI should not be proxy-fied	Critical	resourcemanager	Alejandro Abdelnur	Alejandro Abdelnur
YARN-1152	Invalid key to HMAC computation error when getting application report for completed app attempt	Blocker	resourcemanager	Jason Lowe	Jason Lowe
MAPREDUCE-5020	Compile failure with JDK8	Major	client	Trevor Robinson	Trevor Robinson
YARN-1025	ResourceManager and NodeManager do not load native libraries on Windows.	Major	nodemanager, resourcemanager	Chris Nauroth	Chris Nauroth
MAPREDUCE-5497	'5s sleep' in MRAppMaster.shutDownJob is only needed before stopping ClientService	Major	.	Jian He	Jian He
HDFS-4680	Audit logging of delegation tokens for MR tracing	Major	namenode, security	Andrew Wang	Andrew Wang
YARN-1176	RM web services ClusterMetricsInfo total nodes doesn't include unhealthy nodes	Critical	resourcemanager	Thomas Graves	Jonathan Eagles
MAPREDUCE-5164	command "mapred job" and "mapred queue" omit HADOOP_CLIENT_OPTS	Major	.	Nemon Lou	Nemon Lou
YARN-1078	TestNodeManagerResync, TestNodeManagerShutdown, and TestNodeStatusUpdater fail on Windows	Minor	.	Chuan Liu	Chuan Liu
HADOOP-9958	Add old constructor back to DelegationTokenInformation to unbreak downstream builds	Major	.	Andrew Wang	Andrew Wang
HDFS-5192	NameNode may fail to start when dfs.client.test.drop.namenode.response.number is set	Minor	.	Jing Zhao	Jing Zhao
YARN-1194	TestContainerLogsPage fails with native builds	Minor	nodemanager	Roman Shaposhnik	Roman Shaposhnik
HADOOP-9960	Upgrade Jersey version to 1.9	Blocker	.	Brock Noland	Karthik Kambatla
YARN-1189	NMTokenSecretManagerInNM is not being told when applications have finished	Blocker	.	Jason Lowe	Omkar Vinit Joshi
HADOOP-9557	hadoop-client excludes commons-httpclient	Major	build	Lohit Vijayarenu	Lohit Vijayarenu
HADOOP-9961	versions of a few transitive dependencies diverged between hadoop subprojects	Minor	build	Roman Shaposhnik	Roman Shaposhnik
MAPREDUCE-5493	In-memory map outputs can be leaked after shuffle completes	Blocker	mrv2	Jason Lowe	Jason Lowe
HDFS-5219	Add configuration keys for retry policy in WebHDFSFileSystem	Major	webhdfs	Haohui Mai	Haohui Mai
HDFS-5231	Fix broken links in the document of HDFS Federation	Minor	.	Haohui Mai	Haohui Mai
HADOOP-9977	Hadoop services won't start with different keypass and keystorepass when https is enabled	Major	security	Yesha Vora	Chris Nauroth
HDFS-2994	If lease soft limit is recovered successfully the append can fail	Major	.	Todd Lipcon	Tao Luo
HDFS-5077	NPE in FSNamesystem.commitBlockSynchronization()	Major	namenode	Konstantin Shvachko	Plamen Jeliazkov

SUB-TASKS:

JIRA	Summary	Priority	Component	Reporter	Contributor
HDFS-4962	Use enum for nfs constants	Minor	nfs	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-502	RM crash with NPE on NODE_REMOVED event with FairScheduler	Major	.	Lohit Vijayarenu	Mayank Bansal
YARN-573	Shared data structures in Public Localizer and Private Localizer are not Thread safe.	Critical	.	Omkar Vinit Joshi	Omkar Vinit Joshi
YARN-906	Cancelling ContainerLaunch#call at KILLING causes that the container cannot be completed	Major	.	Zhijie Shen	Zhijie Shen
HDFS-5071	Change hdfs-nfs parent project to hadoop-project	Major	nfs	Kihwal Lee	Brandon Li
HDFS-4763	Add script changes/utility for starting NFS gateway	Major	nfs	Brandon Li	Brandon Li
MAPREDUCE-5462	In map-side sort, swap entire meta entries instead of indexes for better cache performance	Major	performance, task	Sandy Ryza	Sandy Ryza
HDFS-5104	Support dotdot name in NFS LOOKUP operation	Major	nfs	Brandon Li	Brandon Li
HDFS-5107	Fix array copy error in Readdir and Readdirplus responses	Major	nfs	Brandon Li	Brandon Li
HDFS-5110	Change FSDataOutputStream to HdfsDataOutputStream for opened streams to fix type cast error	Major	nfs	Brandon Li	Brandon Li
HDFS-5069	Include hadoop-nfs and hadoop-hdfs-nfs into hadoop dist for NFS deployment	Major	nfs	Brandon Li	Brandon Li
MAPREDUCE-5466	Historyserver does not refresh the result of restarted jobs after RM restart	Blocker	.	Yesha Vora	Jian He
MAPREDUCE-5476	Job can fail when RM restarts after staging dir is cleaned but before MR successfully unregister with RM	Blocker	.	Jian He	Jian He
HDFS-4947	Add NFS server export table to control export by hostname or IP range	Major	nfs	Brandon Li	Jing Zhao
YARN-1085	Yarn and MRv2 should do HTTP client authentication in kerberos setup.	Blocker	nodemanager, resourcemanager	Jaimin Jetly	Omkar Vinit Joshi
HDFS-5078	Support file append in NFSv3 gateway to enable data streaming to HDFS	Major	nfs	Brandon Li	Brandon Li
MAPREDUCE-5441	JobClient exit whenever RM issue Reboot command to 1st attempt App Master.	Major	applicationmaster, client	Rohith Sharma K S	Jian He
YARN-771	AMRMClient support for resource blacklisting	Major	.	Bikas Saha	Junping Du
HDFS-5136	MNT EXPORT should give the full group list which can mount the exports	Major	nfs	Brandon Li	Brandon Li
YARN-1049	ContainerExistStatus should define a status for preempted containers	Blocker	api	Alejandro Abdelnur	Alejandro Abdelnur
YARN-292	ResourceManager throws ArrayIndexOutOfBoundsException while handling CONTAINER_ALLOCATED for application attempt	Major	resourcemanager	Devaraj K	Zhijie Shen
HDFS-5085	Refactor o.a.h.nfs to support different types of authentications	Major	nfs	Brandon Li	Jing Zhao
HDFS-5067	Support symlink operations	Major	nfs	Brandon Li	Brandon Li
HDFS-5199	Add more debug trace for NFS READ and WRITE	Trivial	nfs	Brandon Li	Brandon Li
YARN-1116	Populate AMRMTokens back to AMRMTokenSecretManager after RM restarts	Major	resourcemanager	Jian He	Jian He
YARN-540	Race condition causing RM to potentially relaunch already unregistered AMs on RM restart	Major	resourcemanager	Jian He	Jian He
YARN-1184	ClassCastException is thrown during preemption When a huge job is submitted to a queue B whose resources is used by a job in queueA	Major	capacityscheduler, resourcemanager	J.Andreina	Chris Douglas
HDFS-5212	Refactor RpcMessage and NFS3Response to support different types of authentication information	Major	nfs	Jing Zhao	Jing Zhao
HDFS-5234	Move RpcFrameDecoder out of the public API	Minor	nfs	Haohui Mai	Haohui Mai
HDFS-4971	Move IO operations out of locking in OpenFileCtx	Major	nfs	Jing Zhao	Jing Zhao
HDFS-5249	Fix dumper thread which may die silently	Major	nfs	Brandon Li	Brandon Li

OTHER:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-1034	Remove "experimental" in the Fair Scheduler documentation	Trivial	documentation, scheduler	Sandy Ryza	Karthik Kambatla
YARN-1001	YARN should provide per application-type and state statistics	Blocker	api	Srimanth Gunturi	Zhijie Shen