HIVE-9063: NPE in RemoteSparkJobStatus.getSparkStatistics [Spark Branch] (Rui via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1644518 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8507: UT: fix rcfile_bigdata test [Spark Branch] (Chinna via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1644522 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8993: Make sure Spark + HS2 work [Spark Branch] (Chengxiang via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1644550 13f79535-47bb-0310-9956-ffa450edef68