HADOOP-10893. isolated classloader on the client side. Contributed by Sangjin Lee


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1619605 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1619614 FIXES: YARN-2434. RM should not recover containers from previously failed attempt when AM restart is not enabled. Contributed by Jian He


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1619616 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5130. Add missing job config options to mapred-default.xml (Ray Chiang via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1619631 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8896. Javadoc points to Wrong Reader and Writer classes in SequenceFile (Ray Chiang via aw)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1619633 13f79535-47bb-0310-9956-ffa450edef68