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
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4310-trunk-gd