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Posted to issues@arrow.apache.org by "David Li (Jira)" <ji...@apache.org> on 2021/04/29 12:03:00 UTC

[jira] [Created] (ARROW-12597) [C++] Implement OptionalParallelForAsync

David Li created ARROW-12597:
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             Summary: [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
             Fix For: 5.0.0


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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