YARN-1479. Invalid NaN values in Hadoop REST API JSON response (Chen He via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1569853 13f79535-47bb-0310-9956-ffa450edef68
YARN-1666. Modified RM HA handling of include/exclude node-lists to be available across RM failover by making using of a remote configuration-provider. Contributed by Xuan Gong.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1569856 13f79535-47bb-0310-9956-ffa450edef68
Merge trunk to HDFS-4685.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4685@1569858 13f79535-47bb-0310-9956-ffa450edef68