MAPREDUCE-5724. JobHistoryServer does not start if HDFS is not running. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1558853 13f79535-47bb-0310-9956-ffa450edef68
YARN-1608. LinuxContainerExecutor has a few DEBUG messages at INFO level (kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1558875 13f79535-47bb-0310-9956-ffa450edef68
YARN-1606. Fix the default value of yarn.resourcemanager.zk-timeout-ms in yarn-default.xml (kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1558884 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1558883 FIXES: HADOOP-10146. Workaround JDK7 Process fd close bug (daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1558885 13f79535-47bb-0310-9956-ffa450edef68