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https://issues.apache.org/jira/browse/ARROW-8732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17107398#comment-17107398
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Antoine Pitrou commented on ARROW-8732:
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Microsoft PPL cancellation_token:
https://docs.microsoft.com/en-us/cpp/parallel/concrt/cancellation-in-the-ppl?view=vs-2019
> [C++] Let Futures support cancellation
> --------------------------------------
>
> Key: ARROW-8732
> URL: https://issues.apache.org/jira/browse/ARROW-8732
> Project: Apache Arrow
> Issue Type: Wish
> Components: C++
> Reporter: Antoine Pitrou
> Assignee: Antoine Pitrou
> Priority: Major
>
> There should be a way for consumers of Futures to notify that they are not
> interested in the task at hand anymore. For some kinds of tasks this may
> allow cancelling the task in-flight (e.g. an IO task, or a task consisting of
> multiple steps).
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