svn merge -c 1565310 merging from trunk to branch-2 to fix: HDFS-5881. Fix skip() of the short-circuit local reader(legacy).

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565313 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5699. Allow setting tags on MR jobs (kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565385 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10327. Merging change r1565389 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565390 13f79535-47bb-0310-9956-ffa450edef68
YARN-1661. Fixed DS ApplicationMaster to write the correct exit log. Contributed by Vinod Kumar Vavilapalli.
svn merge --ignore-ancestry -c 1565394 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565397 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5743. Fixed CHANGES.txt to give credit to Ted too.
svn merge --ignore-ancestry -c 1565401 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565402 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4911. Reduce PeerCache timeout to be commensurate with dfs.datanode.socket.reuse.keepalive (cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565438 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5895. Merging change r1565440 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565442 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10273. Update CHANGES.txt to reflect new target version is 2.3 (merged r1565453 from trunk to branch-2)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565454 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5744. Job hangs because RMContainerAllocator.preemptReduce() violates the comparator contract (Gera Shegalov via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565479 13f79535-47bb-0310-9956-ffa450edef68
YARN-1689. Made RMAppAttempt get killed when RMApp is at ACCEPTED. Contributed by Vinod Kumar Vavilapalli.
svn merge --ignore-ancestry -c 1565497 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565498 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1565505 merging from trunk to branch-2 to fix:HDFS-5807. TestBalancerWithNodeGroup.testBalancerWithNodeGroup fails intermittently.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565506 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10330. Merging r1565507 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565508 13f79535-47bb-0310-9956-ffa450edef68
YARN-1665. Simplify the configuration of RM HA by having better default values. Contributed by Xuan Gong.
svn merge --ignore-ancestry -c 1565517 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565518 13f79535-47bb-0310-9956-ffa450edef68
YARN-1660. Simplified the RM HA configuration to accept and be able to simply depend just on
configuration properties of the form yarn.resourcemanager.hostname.RMID and use the default
ports for all service addresses. Contributed by Xuan Gong.
svn merge --ignore-ancestry -c 1565523 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565524 13f79535-47bb-0310-9956-ffa450edef68
YARN-1493,YARN-1490,YARN-1041, YARN-1166,YARN-1566,YARN-1689,YARN-1661 are reverted from branch-2.3. Updating YARN's CHANGES.txt.
svn merge --ignore-ancestry -c 1565805 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565806 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5900. Cannot set cache pool limit of unlimited via CacheAdmin. Contributed by Andrew Wang.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565843 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5882. TestAuditLogs is flaky (jxiang via cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565848 13f79535-47bb-0310-9956-ffa450edef68
YARN-1672. YarnConfiguration is missing a default for yarn.nodemanager.log.retain-seconds (Naren Koneru via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565867 13f79535-47bb-0310-9956-ffa450edef68
YARN-1635. Implemented a Leveldb based ApplicationTimelineStore. Contributed by Billie Rinaldi.
svn merge --ignore-ancestry -c 1565868 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1565869 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5837. dfs.namenode.replication.considerLoad should consider decommissioned nodes. Contributed by Tao Luo.

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