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Posted to issues@tajo.apache.org by "Jaehwa Jung (JIRA)" <ji...@apache.org> on 2014/11/19 02:14:34 UTC

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

     [ https://issues.apache.org/jira/browse/TAJO-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jaehwa Jung reassigned TAJO-1194:
---------------------------------

    Assignee: Jaehwa Jung

> '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
>            Assignee: Jaehwa Jung
>            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.



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