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https://issues.apache.org/jira/browse/ARROW-9707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17176522#comment-17176522
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Andrew Lamb commented on ARROW-9707:
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[~andygrove] I am also very interested in this change (it is something we have 
been studying / thinking about this with [~pauldix]. What you have outlined (a 
fixed and configurable number of threads) is exactly our use case. I would 
enjoy collaborating with you if you have any need 

> [Rust] [DataFusion] Re-implement threading model
> ------------------------------------------------
>
>                 Key: ARROW-9707
>                 URL: https://issues.apache.org/jira/browse/ARROW-9707
>             Project: Apache Arrow
>          Issue Type: Sub-task
>          Components: Rust, Rust - DataFusion
>            Reporter: Andy Grove
>            Assignee: Andy Grove
>            Priority: Major
>             Fix For: 2.0.0
>
>
> The current threading model is very simple and does not scale. We currently 
> use 1-2 dedicated threads per partition and they all run simultaneously, 
> which is a huge problem if you have more partitions than logical or physical 
> cores.
> This task is to re-implement the threading model so that query execution uses 
> a fixed (configurable) number of threads. Work will be broken down into 
> stages and tasks and each in-process executor (running on a dedicated thread) 
> will process its queue of tasks.
> This process will be driven by a scheduler.



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