MAPREDUCE-4936. JobImpl uber checks for cpu are wrong. Contributed by Arun C Murthy


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433445 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4399. Fix RAT warnings by excluding images sub-dir in docs. Contributed by Thomas Graves.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433461 13f79535-47bb-0310-9956-ffa450edef68
YARN-335. Fair scheduler doesn't check whether rack needs containers before assigning to node. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433484 13f79535-47bb-0310-9956-ffa450edef68