YARN-854. Fixing YARN bugs that are failing applications in secure environment. Contributed by Omkar Vinit Joshi.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1494845 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4914. Use DFSClient.Conf instead of Configuration.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1494854 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4908. Reduce snapshot inode memory usage.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1494858 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-xxx-hadoop-auth-kerberos-realm-trunk-gd