If CTAS query fails during the DML part Impala
should drop the newly created table.
Change-Id: I39e04a6923a36afa48f3252addd50ddda83d1706
(cherry picked from commit e03ce43585f68590a95038341e74db458f34bf32)
Reviewed-on: http://gerrit.cloudera.org:8080/870
Reviewed-by: Juan Yu <jyu@cloudera.com>
Tested-by: Internal Jenkins