Bulk Operation

HBASE-21673 Port HBASE-21738 (Remove all the CLSM#size operation in our memstore because it's an quite time consuming.) to branch-1

HBASE-21673 Port HBASE-18784 (Use of filesystem that requires hflush / hsync / append / etc should query outputstream capabilities) to branch-1

HBASE-21673 Port HBASE-20194 (Basic Replication WebUI - Master) and HBASE-20193 (Basic Replication Web UI - Regionserver) to branch-1

HBASE-21673 Port HBASE-6028 (Start/Stop compactions at region server level) to branch-1

HBASE-21673 Port HBASE-20636 (Introduce two bloom filter type ROWPREFIX and ROWPREFIX_DELIMITED) to branch-1

HBASE-21673 Port (HBASE-21255 [acl] Refactor TablePermission into three classes) to branch-1

HBASE-21673 Port HBASE-21560 (Return a new TableDescriptor for MasterObserver#preModifyTable to allow coprocessor modify the TableDescriptor) to branch-1

HBASE-21673 Port HBASE-21642 (CopyTable by reading snapshot and bulkloading will save a lot of time) to branch-1

HBASE-21673 Port HBASE-21652 (Refactor ThriftServer making thrift2 server inherited from thrift1 server) to branch-1

HBASE-21673 Port HBASE-21034 (Add new throttle type: read/write capacity unit) to branch-1

HBASE-21673 Backport HBASE-21413 (Empty meta log doesn't get split when restart whole cluster) to branch-1

HBASE-21673 Backport HBASE-21342 to branch-1