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https://issues.apache.org/jira/browse/PIG-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai updated PIG-922:
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    Status: Open  (was: Patch Available)

> Logical optimizer: push up project
> ----------------------------------
>
>                 Key: PIG-922
>                 URL: https://issues.apache.org/jira/browse/PIG-922
>             Project: Pig
>          Issue Type: New Feature
>          Components: impl
>    Affects Versions: 0.3.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.4.0
>
>         Attachments: PIG-922-p1_0.patch, PIG-922-p1_1.patch
>
>
> This is a continuation work of 
> [PIG-697|https://issues.apache.org/jira/browse/PIG-697]. We need to add 
> another rule to the logical optimizer: Push up project, ie, prune columns as 
> early as possible.

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