Bring tez-branch up-to the API changes made by TEZ-1372 (Gopal V via Vikram Dixit)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1616904 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7656: Bring tez-branch up-to the API changes made by TEZ-1372 (Gopal V via Vikram Dixit)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1616905 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7656: Bring tez-branch up-to the API changes made by TEZ-1372 (Gopal V via Vikram Dixit)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1616906 13f79535-47bb-0310-9956-ffa450edef68