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https://issues.apache.org/jira/browse/ARROW-9758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17178508#comment-17178508
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Andy Grove commented on ARROW-9758:
-----------------------------------

[~jhorstmann] [~alamb] [~pauldix] I believe this is of interest to you. I will 
be working on it soon.

> [Rust] [DataFusion] Implement extension API for DataFusion
> ----------------------------------------------------------
>
>                 Key: ARROW-9758
>                 URL: https://issues.apache.org/jira/browse/ARROW-9758
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust, Rust - DataFusion
>            Reporter: Andy Grove
>            Assignee: Andy Grove
>            Priority: Major
>             Fix For: 2.0.0
>
>
> I would like the ability to extend DataFusion by providing my own:
>  * Logical plan optimization rules
>  * Physical query planner for converting logical plan to physical plan
> Later, I would also like to be able to provide physical plan optimization 
> rules but we don't have a physical optimizer yet.
> These changes would allow people to extend DataFusion easily without 
> implementing their own competing DataFrame APIs.



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