HIVE-7627: FSStatsPublisher does fit into Spark multi-thread task mode[Spark Branch] (Chengxiang via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1628239 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7843: orc_analyze.q fails due to random mapred.task.id in FileSinkOperator [Spark Branch] (Venki via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1628333 13f79535-47bb-0310-9956-ffa450edef68