revert HIVE-9154: Cache pathToPartitionInfo in context aware record reader (Chao via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1647423 13f79535-47bb-0310-9956-ffa450edef68
HIVE-9173 : Fix auto_join29.q, auto_join_without_localtask.q determinism (Jimmy Xiang via Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1647464 13f79535-47bb-0310-9956-ffa450edef68
HIVE-9202: Choose Kryo as the serializer for pTest [Spark Branch]

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1647694 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/spark' into spark