[jira] [Assigned] (ARROW-11907) [C++] Use our own executor in S3FileSystem

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-11907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou reassigned ARROW-11907:
--------------------------------------

    Assignee: Antoine Pitrou

> [C++] Use our own executor in S3FileSystem
> ------------------------------------------
>
>                 Key: ARROW-11907
>                 URL: https://issues.apache.org/jira/browse/ARROW-11907
>             Project: Apache Arrow
>          Issue Type: Task
>          Components: C++
>            Reporter: Antoine Pitrou
>            Assignee: Antoine Pitrou
>            Priority: Major
>
> We use the AWS SDK async APIs in some places in S3FileSystem, but all they do is spawn a separate thread and run the sync API in it.
> Instead we should use our IO executor, which would:
> 1) put an upper bound on the number of threads started
> 2) (presumably) reduce latency by reusing threads instead of spawning a throwaway thread for each async call
> 3) allow for cancellation



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