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https://issues.apache.org/jira/browse/HIVE-1003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13133829#comment-13133829
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Namit Jain commented on HIVE-1003:
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@Ashutosh, that query is not optimized - 
Let us keep HIVE-2119 open and work on that as a followup.
                
> optimize metadata only queries
> ------------------------------
>
>                 Key: HIVE-1003
>                 URL: https://issues.apache.org/jira/browse/HIVE-1003
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Marcin Kurczych
>         Attachments: HIVE-1003.1.patch, hive.1003.2.patch, hive.1003.3.patch
>
>
> Queries like:
> select max(ds) from T 
> where ds is a partitioning column should be optimized.

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