HIVE-9153: Perf enhancement on CombineHiveInputFormat and HiveInputFormat (Rui via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1648397 13f79535-47bb-0310-9956-ffa450edef68
HIVE-9153: Perf enhancement on CombineHiveInputFormat and HiveInputFormat (Rui via Xuefu)
merged from trunk, r1648397

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1648398 13f79535-47bb-0310-9956-ffa450edef68