YARN-478. fix coverage org.apache.hadoop.yarn.webapp.log (Aleksey Gorshkov via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1495129 13f79535-47bb-0310-9956-ffa450edef68
YARN-861. TestContainerManager is failing. Contributed by Vinod Kumar Vavilapalli.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1495160 13f79535-47bb-0310-9956-ffa450edef68
YARN-851. Share NMTokens using NMTokenCache (api-based) between AMRMClient and NMClient instead of memory based approach which is used currently. Contributed by Omkar Vinit Joshi.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1495247 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4772. Add number of children in HdfsFileStatus. Contributed by Brandon Li

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1495253 13f79535-47bb-0310-9956-ffa450edef68