HBASE-10663 Some code cleanup of class Leases and ScannerListener.leaseExpired

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1575451 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10660 MR over snapshots can OOM when alternative blockcache is enabled

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1575454 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8604 improve reporting of incorrect peer address in replication

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1575459 13f79535-47bb-0310-9956-ffa450edef68