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https://issues.apache.org/jira/browse/ARROW-8276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17084332#comment-17084332
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Joris Van den Bossche commented on ARROW-8276:
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Fully agreed.
In my mind, all the `columns`/ `filters` keywords in constructing fragments
right now were temporary hacks to get the desired functionality because
fragments were still tied to the scan context.
(But the partition column should still be included in the schema of the
fragment, which was the original issue here, right? The above snippet is
supposed to work?).
> [C++][Dataset] Scanning a Fragment does not take into account the partition
> columns
> -----------------------------------------------------------------------------------
>
> Key: ARROW-8276
> URL: https://issues.apache.org/jira/browse/ARROW-8276
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Joris Van den Bossche
> Assignee: Ben Kietzman
> Priority: Major
> Labels: dataset, pull-request-available
> Fix For: 0.17.0
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> Follow-up on ARROW-8061, the {{to_table}} method doesn't work for fragments
> created from a partitioned dataset.
> (will add a reproducer later)
> cc [~bkietz]
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