HBASE-12762 Region with no hfiles will have the highest locality cost in LocalityCostFunction (cuijianwei)
HBASE-12767 Fix a StoreFileScanner NPE in reverse scan flow
HBASE-12776 SpliTransaction: Log number of files to be split.
HBASE-12768 - Support enable cache_data_on_write in Shell while creating
table
Merge remote-tracking branch 'remotes/origin/0.98' into 0.98