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https://issues.apache.org/jira/browse/HIVE-460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zheng Shao updated HIVE-460:
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    Status: Open  (was: Patch Available)

Moving the status back since the patch is not ready for commit.
Yongqiang is working on this issue right now. I will reassign.

> Improve ColumnPruner to prune more aggressively and keep column information 
> for input tables
> --------------------------------------------------------------------------------------------
>
>                 Key: HIVE-460
>                 URL: https://issues.apache.org/jira/browse/HIVE-460
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 0.4.0
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: HIVE-460.1.patch
>
>
> This is required for column-based table format.

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