HBASE-10720 rpcClient: Wrong log level when closing the connection

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1576695 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10718 TestHLogSplit fails when it sets a KV size to be negative (Esteban Gutierrez)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1576747 13f79535-47bb-0310-9956-ffa450edef68