HADOOP-11207. Enhanced common DelegationTokenAuthenticationHandler to support proxy-users on Delegation-token management operations. Contributed by Zhijie Shen.
YARN-1879. Marked Idempotent/AtMostOnce annotations to ApplicationMasterProtocol for RM fail over. Contributed by Tsuyoshi OZAWA
YARN-2705. Fixed bugs in ResourceManager node-label manager that were causing test-failures: added a dummy in-memory labels-manager. Contributed by Wangda Tan.
HDFS-7260. Change DFSOutputStream.MAX_PACKETS to be configurable.