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Posted to dev@hive.apache.org by "John Sichi (Assigned) (JIRA)" <ji...@apache.org> on 2011/12/07 01:02:41 UTC

[jira] [Assigned] (HIVE-2340) optimize orderby followed by a groupby

     [ https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Sichi reassigned HIVE-2340:
--------------------------------

    Assignee: Navis
    
> optimize orderby followed by a groupby
> --------------------------------------
>
>                 Key: HIVE-2340
>                 URL: https://issues.apache.org/jira/browse/HIVE-2340
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Minor
>         Attachments: HIVE-2340.1.patch.txt
>
>
> Before implementing optimizer for JOIN-GBY, try to implement RS-GBY optimizer(cluster-by following group-by).

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