YARN-2319. Made the MiniKdc instance start/close before/after the class of TestRMWebServicesDelegationTokens. Contributed by Wenwu Peng.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612588 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10826. Iteration on KeyProviderFactory.serviceLoader is thread-unsafe. (benoyantony viat tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612594 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10864. Tool documentenation is broken. (Contributed by Akira Ajisaka)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612609 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6704. Fix the command to launch JournalNode in HDFS-HA document. Contributed by Akira AJISAKA.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612613 13f79535-47bb-0310-9956-ffa450edef68