HDFS-5681. renewLease should not hold fsn write lock. Contributed by Daryn Sharp.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552711 13f79535-47bb-0310-9956-ffa450edef68
YARN-1180. Update capacity scheduler docs to include types on the configs (Chen He via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552788 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5692. Add explicit diagnostics when a task attempt is killed due to speculative execution (Gera Shegalov via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552797 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5691. Fix typo in ShortCircuitLocalRead document. Contributed by Akira Ajisaka.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552802 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5550. Task Status message (reporter.setStatus) not shown in UI with Hadoop 2.0 (Gera Shegalov via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552808 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10169. Remove the unnecessary synchronized in JvmMetrics class. Contributed by Liang Xie.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552820 13f79535-47bb-0310-9956-ffa450edef68
HDFS-2933. Fix incorrect target version in CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552837 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5636. Enforce a max TTL per cache pool (awang via cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552841 13f79535-47bb-0310-9956-ffa450edef68
YARN-1028. Addendum patch. Added FailoverProxyProvider capability to ResourceManager to help with RM failover.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1552920 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5690. DataNode fails to start in secure mode when dfs.http.policy equals to HTTP_ONLY. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1553167 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10175. Har files system authority should preserve userinfo. Contributed by Chuan Liu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1553169 13f79535-47bb-0310-9956-ffa450edef68
Merge trunk to HDFS-4685.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4685@1553226 13f79535-47bb-0310-9956-ffa450edef68