YARN-2036. Document yarn.resourcemanager.hostname in ClusterSetup (Ray Chiang via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1593632 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6294. Use INode IDs to avoid conflicts when a file open for write is renamed (cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1593638 13f79535-47bb-0310-9956-ffa450edef68