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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/03/15 12:29:00 UTC
[jira] [Resolved] (ARROW-11942) [C++] If tasks are submitted
quickly the thread pool may fail to spin up new threads
[ https://issues.apache.org/jira/browse/ARROW-11942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Antoine Pitrou resolved ARROW-11942.
------------------------------------
Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 9684
[https://github.com/apache/arrow/pull/9684]
> [C++] If tasks are submitted quickly the thread pool may fail to spin up new threads
> ------------------------------------------------------------------------------------
>
> Key: ARROW-11942
> URL: https://issues.apache.org/jira/browse/ARROW-11942
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Weston Pace
> Assignee: Weston Pace
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Probably only really affects unit tests. Consider an idle thread pool with 1 thread (ready_count_ == 1). If `Spawn` is called very quickly it may look like `ready_count_` is still greater than 0 (because `ready_count_` doesn't necessarily decrement by the time `Spawn` returns) and so it will not spin up new threads.
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