HIVE-8556 : introduce overflow control and sanity check to BytesBytesMapJoin (Sergey Shelukhin, reviewed by Mostafa Mokhtar and Prasanth J)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1637432 13f79535-47bb-0310-9956-ffa450edef68