HBASE-9198 RpcClient#call could hang

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1513582 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9199 Call duration is not accurate

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1513584 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9190-Update scan.rb description to match the naming convention of META after namespace change (Ram)



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1513588 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HBASE-8584-trunk-gd