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https://issues.apache.org/jira/browse/ARROW-8746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17103470#comment-17103470
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Wes McKinney commented on ARROW-8746:
-------------------------------------

I appreciate the interest but perhaps let's discuss on the Parquet dev mailing 
list where more people can offer their advice and recommendations. 

> [Python][Documentation] Add column limit recommendations Parquet page
> ---------------------------------------------------------------------
>
>                 Key: ARROW-8746
>                 URL: https://issues.apache.org/jira/browse/ARROW-8746
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Documentation, Python
>            Reporter: Wes McKinney
>            Priority: Major
>
> Users would be well advised to not write columns with large numbers (> 1000) 
> of columns



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