YARN-2972. DelegationTokenRenewer thread pool never expands. Contributed by Jason Lowe
HADOOP-11358. Tests for encryption/decryption with IV calculation overflow. (yliu)
YARN-2949. Add documentation for CGroups. (Contributed by Varun Vasudev)
HDFS-7373. Clean up temporary files after fsimage transfer failures. Contributed by Kihwal Lee
HADOOP-11125. Remove redundant tests in TestOsSecureRandom. Contributed by Masanori Oyama.
HADOOP-11427. ChunkedArrayList: fix removal via iterator and implement get (cmccabe)
HDFS-7543. Avoid path resolution when getting FileStatus for audit logs. Contributed by Haohui Mai.
HADOOP-11385. Prevent cross site scripting attack on JMXJSONServlet. Contributed by Haohui Mai.
HADOOP-11409. FileContext.getFileContext can stack overflow if default fs misconfigured. Contributed by Gera Shegalov
HADOOP-11428. Remove obsolete reference to Cygwin in BUILDING.txt. Contributed by Arpit Agarwal.
HDFS-7530. Allow renaming of encryption zone roots. Contributed by Charles Lamb.
HDFS-7431. log message for InvalidMagicNumberException may be incorrect. Contributed by Yi Liu.
YARN-2964. RM prematurely cancels tokens for jobs that submit jobs (oozie). Contributed by Jian He
HADOOP-11431. Clean up redundant maven-site-plugin configuration. Contributed by Herve	Boutemy.
HADOOP-11430. Add GenericTestUtils#disableLog, GenericTestUtils#setLogLevel (cmccabe)
HDFS-7552. Change FsVolumeList toString() to fix TestDataNodeVolumeFailureToleration (Liang Xie via Colin P. McCabe)
MAPREDUCE-6045. need close the DataInputStream after open it in TestMapReduce.java (zxu via rkanter)
HADOOP-11422. Check CryptoCodec is AES-CTR for Crypto input/output stream (Yi Liu via Colin P. McCabe)
HDFS-7443. Datanode upgrade to BLOCKID_BASED_LAYOUT fails if duplicate block files are present in the same volume (cmccabe)
HADOOP-11213. Typos in html pages: SecureMode and EncryptedShuffle. (Wei Yan via kasha)