YARN-2562. Changed ContainerId#toString() to be more readable. Contributed by Tsuyoshi OZAWA
YARN-2635. TestRM, TestRMRestart, TestClientToAMTokens should run with both CS and FS. (Wei Yan and kasha via kasha)
YARN-2468. Enhanced NodeManager to support log handling APIs (YARN-2569) for use by long running services. Contributed by Xuan Gong.
HDFS-7055. Add tracing to DFSInputStream (cmccabe)