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https://issues.apache.org/jira/browse/ARROW-9707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove closed ARROW-9707.
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Resolution: Invalid
Closing this is as invalid because things have changed a lot since this was
filed and we have now moved away from explicit thread management (mostly).
> [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
> Labels: pull-request-available
> Fix For: 3.0.0
>
> Attachments: image-2020-09-24-22-46-46-959.png
>
> Time Spent: 4h
> Remaining Estimate: 0h
>
> 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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