YARN-981. Fixed YARN webapp so that /logs servlet works like before. Contributed by Jian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1518030 13f79535-47bb-0310-9956-ffa450edef68
YARN-1083. Changed ResourceManager to fail when the expiry interval is less than the configured node-heartbeat interval. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1518036 13f79535-47bb-0310-9956-ffa450edef68