HIVE-8151: Dynamic partition sort optimization inserts record wrongly to partition when used with GroupBy (Prasanth J reviewed by Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1628876 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8296: Reduce vectorization should use independent buffers for key and value (Matt McCline, via Gopal V)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1628881 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8325: NPE in map join execution (submit via child) (Gunther Hagleitner, reviewed by Szehon Ho)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1628885 13f79535-47bb-0310-9956-ffa450edef68