HIVE-4257 : java.sql.SQLNonTransientConnectionException on JDBCStatsAggregator (Teddy Choi via Navis, reviewed by Ashutosh)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1554714 13f79535-47bb-0310-9956-ffa450edef68