HADOOP-11169. Fix DelegationTokenAuthenticatedURL to pass the connection Configurator to the authenticator. (Arun Suresh via wang)
HADOOP-11172. Improve error message in Shell#runCommand on OutOfMemoryError. (Yongjun Zhang via wang)
Fixup for CHANGES.txt
HDFS-7128. Decommission slows way down when it gets towards the end. Contributed by Ming Ma.
HADOOP-11166. Remove ulimit from test-patch.sh.
HDFS-7112. LazyWriter should use either async IO or one thread per physical disk. Contributed by Xiaoyu Yao.