Antoine Pitrou created ARROW-15941:
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Summary: [C++] Allow setting IO thread pool size with an
environment variable
Key: ARROW-15941
URL: https://issues.apache.org/jira/browse/ARROW-15941
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Antoine Pitrou
Fix For: 8.0.0
See https://issues.apache.org/jira/browse/ARROW-14354 and
https://github.com/apache/arrow/pull/12624#discussion_r827088337 for discussion.
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