[jira] [Commented] (ARROW-12938) [C++] Investigate spawning arbitrary callbacks from StopToken

["Todd Farmer (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-12938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17601402#comment-17601402 ] 

Todd Farmer commented on ARROW-12938:
-------------------------------------

This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned per [project policy|https://arrow.apache.org/docs/dev/developers/bug_reports.html#issue-assignment]. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

> [C++] Investigate spawning arbitrary callbacks from StopToken
> -------------------------------------------------------------
>
>                 Key: ARROW-12938
>                 URL: https://issues.apache.org/jira/browse/ARROW-12938
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Antoine Pitrou
>            Assignee: Antoine Pitrou
>            Priority: Major
>
> In some situations, we may want to forward stop requests to external runtimes, e.g. gRPC (see https://github.com/apache/arrow/pull/10318 ), without polling.
> Ideally, one may temporarily add a callback to a StopToken. This bears complications, especially in the case where the stop request comes from a signal handler.



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