HIVE-7112: Tez processor swallows errors (Patch by Gunther Hagleitner, reviewed by Navis and Vikram Dixit K)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1598826 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7071: Use custom Tez split generator to support schema evolution (Patch by Gunther Hagleitner, reviewed by Vikram Dixit K)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1598829 13f79535-47bb-0310-9956-ffa450edef68