HBASE-12762 Region with no hfiles will have the highest locality cost in LocalityCostFunction (cuijianwei)
HBASE-12429 Add port to ClusterManager's actions.
HBASE-12772 TestPerColumnFamilyFlush failing
HBASE-12767 Fix a StoreFileScanner NPE in reverse scan flow
HBASE-12776 SpliTransaction: Log number of files to be split.