HADOOP-11287. Simplify UGI#reloginFromKeytab for Java 7+. Contributed by Li Lu.
YARN-2931. PublicLocalizer may fail until directory is initialized by LocalizeRunner. (Anubhav Dhoot via kasha)
HADOOP-11363 Hadoop maven surefire-plugin uses must set heap size.
HADOOP-10134 [JDK8] Fix Javadoc errors caused by incorrect or illegal tags in doc  comments.
HADOOP-11352 Clean up test-patch.sh to disable "+1 contrib tests"
HADOOP-10476. Bumping the findbugs version to 3.0.0. Contributed by Haohui Mai.
HADOOP-11367. Fix warnings from findbugs 3.0 in hadoop-streaming. Contributed by Li Lu.
HADOOP-11369. Fix new findbugs warnings in hadoop-mapreduce-client, non-core directories. Contributed by Li Lu.
HADOOP-11368. Fix SSLFactory truststore reloader thread leak in KMSClientProvider. Contributed by Arun Suresh.
HADOOP-11372. Fix new findbugs warnings in mapreduce-examples. Contributed by Li Lu.
Incorrect locking in FsVolumeList#checkDirs can hang datanodes (Noah Lorang via Colin P. McCabe)
HADOOP-11273. TestMiniKdc failure: login options not compatible with IBM JDK. Contributed by Gao Zhong Liang.
HDFS-7498. Simplify the logic in INodesInPath. Contributed by Jing Zhao.
HADOOP-11379. Fix new findbugs warnings in hadoop-auth*. Contributed by Li Lu.
HADOOP-11378. Fix new findbugs warnings in hadoop-kms. Contributed by Li Lu.
YARN-2910. FSLeafQueue can throw ConcurrentModificationException. (Wilfred Spiegelenburg via kasha)
HADOOP-11349. RawLocalFileSystem leaks file descriptor while creating a file if creat succeeds but chmod fails. (Varun Saxena via Colin P.  McCabe)
YARN-2930. Fixed TestRMRestart#testRMRestartRecoveringNodeLabelManager intermittent failure. Contributed by Wangda Tan
YARN-2924. Fixed RMAdminCLI to not convert node labels to lower case. Contributed by Wangda Tan
HDFS-7481. Add ACL indicator to the 'Permission Denied' exception. (Contributed by Vinayakumar B )