HBASE-7325 Replication reacts slowly on a lightly-loaded cluster (Gabriel Reid via JD)


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1511378 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HBASE-8559-trunk-gd