HDFS-7359. NameNode in secured HA cluster fails to start if dfs.namenode.secondary.http-address cannot be interpreted as a network address. Contributed by Chris Nauroth.
YARN-2805. Fixed ResourceManager to load HA configs correctly before kerberos login. Contributed by Wangda Tan.
HADOOP-11267. TestSecurityUtil fails when run with JDK8 because of empty principal names. Contributed by Stephen Chu.
YARN-2579. Fixed a deadlock issue when EmbeddedElectorService and FatalEventDispatcher try to transition RM to StandBy at the same time. Contributed by Rohith Sharmaks
HADOOP-10714. AmazonS3Client.deleteObjects() need to be limited to 1000 entries per call. Contributed by Juan Yu.
HADOOP-11272. Allow ZKSignerSecretProvider and ZKDelegationTokenSecretManager to use the same curator client. Contributed by Arun Suresh.
HDFS-7366. BlockInfo should take replication as an short in the constructor. Contributed by Li Lu.
HADOOP-11187 NameNode - KMS communication fails after a long period of inactivity. Contributed by Arun Suresh.
YARN-2813. Fixed NPE from MemoryTimelineStore.getDomains. Contributed by Zhijie Shen