YARN-656. In scheduler UI, including reserved memory in Memory Total can make it exceed cluster capacity. (Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512483 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9858. Remove unused private RawLocalFileSystem#execCommand method from branch-2. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512491 13f79535-47bb-0310-9956-ffa450edef68
YARN-1046. Disable mem monitoring my default in MiniYARNCluster (Karthik Kambatla via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512497 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8814. Merging change r1387853 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512510 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9857. Merging change r1512522 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512523 13f79535-47bb-0310-9956-ffa450edef68