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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