HBASE-7824 Improve master start up time when there is log splitting work (Jeffrey Zhong)



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1449920 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7884 ByteBloomFilter's performance can be improved by avoiding multiplication when generating hash (clockfly)



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1449996 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7914 Port the fix of HBASE-6748 into 0.94 branch (Jeffrey Zhong)



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1450000 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7671 Flushing memstore again after last failure could cause data loss

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1450001 13f79535-47bb-0310-9956-ffa450edef68