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https://issues.apache.org/jira/browse/ARROW-16685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-16685.
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Resolution: Fixed
Issue resolved by pull request 13281
[https://github.com/apache/arrow/pull/13281]
> [Python] Using Python's set in inner Table.join has undeterministic behaviour
> -----------------------------------------------------------------------------
>
> Key: ARROW-16685
> URL: https://issues.apache.org/jira/browse/ARROW-16685
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Reporter: Alenka Frim
> Assignee: Alessandro Molina
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.0.0
>
> Time Spent: 5h 50m
> Remaining Estimate: 0h
>
> For the inner join of pa.Table we are using Python's set, which causes
> undeterministic behaviour. This should be fixed so that the ordering of the
> output columns is stable.
> See:
> * [https://github.com/apache/arrow/pull/13260#issuecomment-1141906725]
> *
> [https://github.com/apache/arrow/runs/6615749316?check_suite_focus=true#step:6:5590]
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