HIVE-3420 : Inefficiency in hbase handler when process query including rowkey range scan (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1525329 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5154 : Remove unnecessary array creation in ReduceSinkOperator (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1525381 13f79535-47bb-0310-9956-ffa450edef68