[jira] [Commented] (ARROW-10784) [Python] Loading pyarrow.compute isn't thread safe

["Antoine Pitrou (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-10784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286053#comment-17286053 ] 

Antoine Pitrou commented on ARROW-10784:
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[~emkornfield] DId you manage to get useful diagnosis information on this? Otherwise, I think we might as well close the issue.

> [Python] Loading pyarrow.compute isn't thread safe
> --------------------------------------------------
>
>                 Key: ARROW-10784
>                 URL: https://issues.apache.org/jira/browse/ARROW-10784
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 2.0.0
>            Reporter: Micah Kornfield
>            Priority: Major
>             Fix For: 4.0.0
>
>
> When using Arrow in a multithreaded environment it is possible to trigger an initialization race on the pyarrow.compute module when calling Array.flatten.
>  
> Flatten calls _pc() which imports pyarrow compute but if two threads call flatten at the same time is possible that the global initialization of functions from the registry will be incomplete and therefore cause an AttributeError.



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