YARN-2544. Added admin-API objects for using node-labels. Contributed by Wangda Tan.
HADOOP-11184. Update Hadoop's lz4 to r123 (cmccabe)
YARN-2180. [YARN-1492] In-memory backing store for cache manager. (Chris Trezzo via kasha)
YARN-2617. Fixed ApplicationSubmissionContext to still set resource for backward compatibility. Contributed by Wangda Tan.
HDFS-7026. Introduce a string constant for "Failed to obtain user group info...". Contributed by Yongjun Zhang.