YARN-957. Fixed a bug in CapacityScheduler because of which requests that need more than a node's total capability were incorrectly allocated on that node causing apps to hang. Contributed by Omkar Vinit Joshi.
svn merge --ignore-ancestry -c 1520187 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1520188 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9915.  o.a.h.fs.Stat support on Mac OS X (Contributed by Binglin Chang)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1520192 13f79535-47bb-0310-9956-ffa450edef68