MAPREDUCE-5280. Bring back removed constructor and a method in mapreduce ClusterMetrics for binary compatibility with 1.x APIs. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1488458 13f79535-47bb-0310-9956-ffa450edef68
YARN-660. Improve AMRMClient with matching requests (bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1488485 13f79535-47bb-0310-9956-ffa450edef68