YARN-1570. Fixed formatting of the lines in YarnCommands.apt.vm docs source. Contributed by Akira Ajisaka.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1579797 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6038. Allow JournalNode to handle editlog produced by new release with future layoutversion. Contributed by Jing Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1579813 13f79535-47bb-0310-9956-ffa450edef68
YARN-1855. Made Application-history server to be optional in MiniYARNCluster and thus avoid the failure of TestRMFailover#testRMWebAppRedirect. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1579838 13f79535-47bb-0310-9956-ffa450edef68
YARN-1859. Fixed WebAppProxyServlet to correctly handle applications absent on the ResourceManager. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1579866 13f79535-47bb-0310-9956-ffa450edef68