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https://issues.apache.org/jira/browse/ARROW-12597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-12597:
-----------------------------------
Labels: pull-request-available (was: )
> [C++] Implement OptionalParallelForAsync
> ----------------------------------------
>
> Key: ARROW-12597
> URL: https://issues.apache.org/jira/browse/ARROW-12597
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: David Li
> Assignee: David Li
> Priority: Major
> Labels: pull-request-available
> Fix For: 5.0.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In ARROW-11843 we found that we still can't enable parallel column conversion
> for Parquet datasets because the Arrow Parquet reader uses
> OptionalParallelFor, which does a parallel wait. We should provide an async
> version to avoid nested parallelism.
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