svn merge -c 1594263 merging from trunk to branch-2 to fix:HDFS-6334. Client failover proxy provider for IP failover based NN HA. Contributed by Kihwal Lee.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594264 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10585. Retry polices ignore interrupted exceptions (Daryn Sharp via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594270 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6305. WebHdfs response decoding may throw RuntimeExceptions (Daryn Sharp via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594274 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1594275 FIXES: YARN-1751. Improve MiniYarnCluster for log aggregation testing. Contributed by Ming Ma


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594276 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10566. Adding files missed in previous commit 1594280

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594283 13f79535-47bb-0310-9956-ffa450edef68
Revert the commit r1594283

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594285 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10572. Merging change r1594289 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1594291 13f79535-47bb-0310-9956-ffa450edef68