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Posted to dev@hive.apache.org by "Ashutosh Chauhan (JIRA)" <ji...@apache.org> on 2013/01/12 00:18:12 UTC

[jira] [Commented] (HIVE-3426) union with same source should be optimized

    [ https://issues.apache.org/jira/browse/HIVE-3426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13551621#comment-13551621 ] 

Ashutosh Chauhan commented on HIVE-3426:
----------------------------------------

What Zhenxiao is proposing a good first step. Lets try to optimize that query first and worry about GBY in subquery later.
                
> union with same source should be optimized
> ------------------------------------------
>
>                 Key: HIVE-3426
>                 URL: https://issues.apache.org/jira/browse/HIVE-3426
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Zhenxiao Luo
>


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