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Apache Hadoop Changelog

Release 2.6.2 - 2015-10-28

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-4087	Followup fixes after YARN-2019 regarding RM behavior when state-store error occurs	Major	.	Jian He	Jian He

IMPROVEMENTS:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-3727	For better error recovery, check if the directory exists before using it for localization.	Major	nodemanager	zhihai xu	zhihai xu

BUG FIXES:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-3194	RM should handle NMContainerStatuses sent by NM while registering if NM is Reconnected node	Blocker	resourcemanager	Rohith Sharma K S	Rohith Sharma K S
MAPREDUCE-6334	Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput shuffle handler	Blocker	.	Eric Payne	Eric Payne
YARN-3554	Default value for maximum nodemanager connect wait time is too high	Major	.	Jason Lowe	Naganarasimha G R
YARN-3780	Should use equals when compare Resource in RMNodeImpl#ReconnectNodeTransition	Minor	resourcemanager	zhihai xu	zhihai xu
YARN-3802	Two RMNodes for the same NodeId are used in RM sometimes after NM is reconnected.	Major	resourcemanager	zhihai xu	zhihai xu
YARN-2019	Retrospect on decision of making RM crashed if any exception throw in ZKRMStateStore	Critical	.	Junping Du	Jian He
YARN-4005	Completed container whose app is finished is not removed from NMStateStore	Major	.	Jun Gong	Jun Gong
MAPREDUCE-6454	MapReduce doesn't set the HADOOP_CLASSPATH for jar lib in distributed cache.	Critical	.	Junping Du	Junping Du
YARN-3896	RMNode transitioned from RUNNING to REBOOTED because its response id had not been reset synchronously	Major	resourcemanager	Jun Gong	Jun Gong
MAPREDUCE-6497	Fix wrong value of JOB_FINISHED event in JobHistoryEventHandler	Major	.	Shinichi Yamashita	Shinichi Yamashita
YARN-3798	ZKRMStateStore shouldn't create new session without occurrance of SESSIONEXPIED	Blocker	resourcemanager	Bibin A Chundatt	Varun Saxena

SUB-TASKS:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-4092	RM HA UI redirection needs to be fixed when both RMs are in standby mode	Major	resourcemanager	Xuan Gong	Xuan Gong
YARN-4101	RM should print alert messages if Zookeeper and Resourcemanager gets connection issue	Critical	yarn	Yesha Vora	Xuan Gong