HIVE-6701 Analyze table compute statistics for decimal columns. (Sergey Shelukhin and Jitendra Nath Pandey, reviewed by Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1582546 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6761: Hashcode computation does not use maximum parallelism for scalable dynamic partitioning
 (Prasanth J via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1582598 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6760: Scalable dynamic partitioning should bail out properly for list bucketing (Prasanth J via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1582600 13f79535-47bb-0310-9956-ffa450edef68