MAPREDUCE-2351. mapred.job.tracker.history.completed.location should support an arbitrary filesystem URI. (Backported by Chelsey Chang).

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1495292 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-7140. IPC Reader threads do not stop when server stops (Backported by Ivan Mitic).

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1495293 13f79535-47bb-0310-9956-ffa450edef68