MAPREDUCE-5441. Changed MR AM to return RUNNING state if exiting when RM commands to reboot, so that client can continue to track the overall job. Contributed by xJian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1518821 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9889. Refresh the Krb5 configuration when creating a new kdc in Hadoop-MiniKDC (Wei Yan via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1518847 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4310-trunk-gd