HDFS-7335. Redundant checkOperation() in FSN.analyzeFileState(). Contributed by Milan Desai.
HDFS-7333. Improve logging in Storage.tryLock(). Contributed by Konstantin Shvachko.
HDFS-7357. FSNamesystem.checkFileProgress should log file path. Contributed by Tsz Wo Nicholas Sze.
HDFS-7199. DFSOutputStream should not silently drop data if DataStreamer crashes with an unchecked exception (rushabhs via cmccabe)
CHANGES.txt.  Move HDFS-7199 to branch-2.6
YARN-2767. Added a test case to verify that http static user cannot kill or submit apps in the secure mode. Contributed by Varun Vasudev.
HADOOP-11266. Remove no longer supported activation properties for packaging from pom. Contributed by Masatake Iwasaki.
Merge branch 'apache-trunk' into HDFS-7359