[jira] [Commented] (ARROW-13269) [C++] [Dataset] Improve the _metadata example to show how to properly create _metadata if there is a partitioning

["David Li (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-13269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17474514#comment-17474514 ] 

David Li commented on ARROW-13269:
----------------------------------

Should this issue be updated to reflect it's a Python docs change now that we have a PR? Or do we still want a fix in the C++ side somehow?

> [C++] [Dataset] Improve the _metadata example to show how to properly create _metadata if there is a partitioning
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-13269
>                 URL: https://issues.apache.org/jira/browse/ARROW-13269
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 4.0.0
>            Reporter: Weston Pace
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> If there are partition columns specified then the writers will only write the non-partition columns and thus they will not contain the fields used for the partition.



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