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https://issues.apache.org/jira/browse/ARROW-13269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17377946#comment-17377946
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Joris Van den Bossche commented on ARROW-13269:
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[~westonpace] I don't fully understand your updated title. In the doc example,
the {{_common_metadata}} and {{_metadata}} files are written with two separate
{{pq.write_metadata}} calls, and so you can pass a different schema to each (eg
{{table.schema}} for {{_common_metadata}} and {{table.select([.. all column
except partitioning columns ..]).schema}} for {{_metadata}}).
> [C++] [Dataset] pyarrow.parquet.write_metadata does not allow common_metadata
> and _metadata schemas to differ
> -------------------------------------------------------------------------------------------------------------
>
> Key: ARROW-13269
> URL: https://issues.apache.org/jira/browse/ARROW-13269
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 4.0.0
> Reporter: Weston Pace
> Priority: Major
>
> 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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