svn merge -c 1580886 merging from trunk to branch-2 to fix:HDFS-3087. Decomissioning on NN restart can complete without blocks being replicated. Contributed by Rushabh S Shah.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1580888 13f79535-47bb-0310-9956-ffa450edef68
YARN-1838. Enhanced timeline service getEntities API to get entities from a given entity ID or insertion timestamp. Contributed by Billie Rinaldi.
svn merge --ignore-ancestry -c 1580960 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1580961 13f79535-47bb-0310-9956-ffa450edef68
YARN-1670. aggregated log writer can write more log data then it says is the log length (Mit Desai via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1580963 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1580977 from trunk for HADOOP-10015. UserGroupInformation prints out excessive warnings.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1580978 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5791. Merging change r1580994 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1580996 13f79535-47bb-0310-9956-ffa450edef68
Add target, .classpath, .project and .settings to svn:ignore.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1581000 13f79535-47bb-0310-9956-ffa450edef68
Merge r1580997 from trunk. YARN-1852. Fixed RMAppAttempt to not resend AttemptFailed/AttemptKilled events to already recovered Failed/Killed RMApps. Contributed by Rohith Sharmaks

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1581001 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6050. Merging change r1581055 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1581059 13f79535-47bb-0310-9956-ffa450edef68
Backport HDFS-5138 from trunk: Support HDFS upgrade in HA. Contributed by Aaron T. Myers.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1581067 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6135. Merge r1581070 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1581071 13f79535-47bb-0310-9956-ffa450edef68