YARN-2826. Fixed user-groups mappings' refresh bug caused by YARN-2826. Contributed by Wangda Tan.
YARN-2505. Supported get/add/remove/change labels in RM REST API. Contributed by Craig Welch.
YARN-2607. Fixed issues in TestDistributedShell. Contributed by Wangda Tan.
HADOOP-11286. Copied LimitInputStream from guava-0.14 to hadoop to avoid issues with newer versions of guava in applications. Contributed by Christopher Tubbs.
HDFS-7382. DataNode in secure mode may throw NullPointerException if client connects before DataNode registers itself with NameNode. Contributed by Chris Nauroth.
YARN-2830. Add backwords compatible ContainerId.newInstance constructor. Contributed by Jonathan Eagles.
HADOOP-10786. Fix UGI#reloginFromKeytab on Java 8. Contributed by Stephen Chu.
HDFS-7383. DataNode.requestShortCircuitFdsForRead may throw NullPointerException. Contributed by Tsz Wo Nicholas Sze.
HADOOP-10786. Moved to hadoop-2.7.X.
HDFS-7383. Merged to branch-2.6 also.
Updated CHANGES.txt to reflect hadoop-2.6.0 release dates.
YARN-2834. Fixed ResourceManager to ignore token-renewal failures on recovery consistent with the (somewhat incorrect) behaviour in the non-recovery case. Contributed by Jian He.
Fix broken download of directories

(cherry picked from commit 745c9a01243b8eefc72d89d1164d7d010b80983b)
Release Notes for hadoop-2.6.0.
Merge pull request #4 from apache/trunk

[Apache Merge]Merge from Apache/Hadoop, 20141110