MAPREDUCE-5671. NaN can be created by client and assign to Progress (Chen He via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1570623 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5688. TestStagingCleanup fails intermittently with JDK7 (Mit Desai via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1570635 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5935. Merge change r1570663 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1570664 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10278. Merging r1570703 from trunk to branch-2

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1570704 13f79535-47bb-0310-9956-ffa450edef68
YARN-1470. Add audience annotations to MiniYARNCluster. (Anubhav Dhoot via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1570709 13f79535-47bb-0310-9956-ffa450edef68