HBASE-10563 Set name for FlushHandler thread (Himanshu Vashishtha)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1569370 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10564 HRegionServer.nextLong should be removed since it's not used anywhere, or should be used somewhere it meant to

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1569467 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10539. HRegion.addAndGetGlobalMemstoreSize returns previous size (Feng Honghua)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1569471 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10543 Two rare test failures with TestLogsCleaner and TestSplitLogWorker

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1569496 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10546 Two scanner objects are open for each hbase map task but only one scanner object is closed. (Vasu Mariyala)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1569500 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10501 Improve IncreasingToUpperBoundRegionSplitPolicy to avoid too many regions.

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1569507 13f79535-47bb-0310-9956-ffa450edef68