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https://issues.apache.org/jira/browse/ARROW-10183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17208626#comment-17208626
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Antoine Pitrou commented on ARROW-10183:
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So it's spawning a dedicated thread pool? Is there a desired use case for this 
feature?

> Create an async ParallelForEach that runs on an iterator
> --------------------------------------------------------
>
>                 Key: ARROW-10183
>                 URL: https://issues.apache.org/jira/browse/ARROW-10183
>             Project: Apache Arrow
>          Issue Type: Sub-task
>            Reporter: Weston Pace
>            Priority: Major
>
> This method should take in an iterator and spawn N threads to pull items off 
> the iterator and start working on them.  It should return a future which will 
> complete when all N threads have finished and the iterator is exhausted.



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