HIVE-8865 : Needs to set hashTableMemoryUsage for MapJoinDesc [Spark Branch] (Chao Sun via Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1639767 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8840: Print prettier Spark work graph after HIVE-8793 [Spark Branch] (Jimmy via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1639794 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8860 : Populate ExecMapperContext in SparkReduceRecordHandler [Spark Branch] (Chao Sun via Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1639813 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8844 : Choose a persisent policy for RDD caching [Spark Branch] (Jimmy Xiang via Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1639836 13f79535-47bb-0310-9956-ffa450edef68