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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2014/11/18 10:59:34 UTC

[jira] [Created] (TAJO-1194) 'INSERT OVERWRITE .. SELECT' does not remove existing data when result is empty.

Hyunsik Choi created TAJO-1194:
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             Summary: 'INSERT OVERWRITE .. SELECT' does not remove existing data when result is empty.
                 Key: TAJO-1194
                 URL: https://issues.apache.org/jira/browse/TAJO-1194
             Project: Tajo
          Issue Type: Bug
          Components: distributed query plan
            Reporter: Hyunsik Choi
            Priority: Critical
             Fix For: 0.9.1


*Background*
{{INSERT OVERWRITE INTO XXX SELECT ... FROM Y}} overwrites only the partitions which corresponds to the query results. If the query result is empty, all partitions should be removed. 

*Problem*
The current implementation does not remove any partition if the query result is empty. We should fix it.



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