YARN-1776. Fixed DelegationToken renewal to survive RM failover. Contributed by Zhijie Shen

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1580154 13f79535-47bb-0310-9956-ffa450edef68
YARN-1577. Made UnmanagedAMLauncher do launchAM after the attempt reaches the LAUNCHED state. Contributed by Jian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1580164 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10191. Missing executable permission on viewfs internal dirs. Contributed by Gera Shegalov.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1580170 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6140. WebHDFS cannot create a file with spaces in the name after HA failover changes. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1580173 13f79535-47bb-0310-9956-ffa450edef68