[jira] [Updated] (ARROW-9707) [Rust] [DataFusion] Re-implement threading model

["Adam Lippai (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-9707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adam Lippai updated ARROW-9707:
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    Attachment: image-2020-09-24-22-46-46-959.png

> [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
>
>         Attachments: image-2020-09-24-22-46-46-959.png
>
>
> 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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