YARN-1984. LeveldbTimelineStore does not handle db exceptions properly. Contributed by Varun Saxena
YARN-2697. Remove useless RMAuthenticationHandler. Contributed by Haosong Huang.
HDFS-7436. Consolidate implementation of concat(). Contributed by Haohui Mai.
HDFS-7303. NN UI fails to distinguish datanodes on the same host. Contributed by Benoy Antony.
HADOOP-11322. key based ACL check in KMS always check KeyOpType.MANAGEMENT even actual KeyOpType is not MANAGEMENT. (Dian Fu via yliu)
YARN-2404. Removed ApplicationAttemptState and ApplicationState class in RMStateStore. Contributed by Tsuyoshi OZAWA
MAPREDUCE-5568. Fixed CompletedJob in JHS to show progress percentage correctly in case the number of mappers or reducers is zero. Contributed by MinJi Kim
HADOOP-11300. KMS startup scripts must not display the keystore / truststore passwords. Contributed by Arun Suresh.
HDFS-7097. Allow block reports to be processed during checkpointing on standby name node. (kihwal via wang)
HADOOP-11173. Improve error messages for some KeyShell commands.
YARN-2906. CapacitySchedulerPage shows HTML tags for a queue's Active Users. Contributed by Jason Lowe
YARN-2188. [YARN-1492] Client service for cache manager. (Chris Trezzo and Sangjin Lee via kasha)
Revert "MAPREDUCE-5785. Derive heap size or mapreduce.*.memory.mb automatically. (Gera Shegalov and Karthik Kambatla via kasha)"

This reverts commit a4df9eed059977374c8e889cb85d79e8e514ad30.
HDFS-7440. Consolidate snapshot related operations in a single class. Contributed by Haohui Mai.
HDFS-6803 Document DFSClient#DFSInputStream expectations reading and preading  in concurrent context. (stack via stevel)
HDFS-7310. Mover can give first priority to local DN if it has target storage type available in local DN. (Vinayakumar B via umamahesh)
HDFS-7444. convertToBlockUnderConstruction should preserve BlockCollection. Contributed by Haohui Mai.
HDFS-7444. Addendum patch to resolve conflicts between HDFS-7444 and HDFS-7310.
YARN-2165. Added the sanity check for the numeric configuration values of the timeline service. Contributed by Vasanth kumar RJ.
HADOOP-11257. Update "hadoop jar" documentation to warn against using it for launching yarn jars (iwasakims via cmccabe)