Reverting MAPREDUCE-5028 (commit 1457918)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1458433 13f79535-47bb-0310-9956-ffa450edef68
YARN-200. yarn log does not output all needed information, and is in a binary format. Contributed by Ravi Prakash


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1458466 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4614. FSNamesystem#getContentSummary should use getPermissionChecker helper method. Contributed by Aaron T. Myers.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1458593 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5075. DistCp leaks input file handles since ThrottledInputStream does not close the wrapped InputStream.  Contributed by Chris Nauroth


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1458741 13f79535-47bb-0310-9956-ffa450edef68
Move MAPREDUCE-5075 to 2.0.5-beta in CHANGES.txt.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1458749 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4972. Coverage fixing for org.apache.hadoop.mapreduce.jobhistory (Aleksey Gorshkov via bobby)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1458906 13f79535-47bb-0310-9956-ffa450edef68
YARN-396. Rationalize AllocateResponse in RM Scheduler API. Contributed by Zhijie Shen.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1459040 13f79535-47bb-0310-9956-ffa450edef68
YARN-297. Improve hashCode implementations for PB records. Contributed by Xuan Gong.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1459054 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' into YARN-488
YARN-488: code review feedback