HADOOP-11397. Can't override HADOOP_IDENT_STRING (Kengo Seki via aw)
HADOOP-11416. Move ChunkedArrayList into hadoop-common (cmccabe)
YARN-2189. Admin service for cache manager. Addendum to sort entries
YARN-2964. FSLeafQueue#assignContainer - document the reason for using both write and read locks. (Tsuyoshi Ozawa via kasha)