remove the intermediate dir of one hive query when it finish
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Key: HIVE-2422
URL: https://issues.apache.org/jira/browse/HIVE-2422
Project: Hive
Issue Type: Bug
Reporter: He Yongqiang
right now if one hive query got compiled to 2 mr jobs, and the first job's
output feed the second job. When the query finish, the first job's output
should be removed.
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