[jira] [Updated] (ARROW-8644) [Python] Dask integration tests failing due to change in not including partition columns

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-8644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-8644:
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    Labels: pull-request-available  (was: )

> [Python] Dask integration tests failing due to change in not including partition columns
> ----------------------------------------------------------------------------------------
>
>                 Key: ARROW-8644
>                 URL: https://issues.apache.org/jira/browse/ARROW-8644
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Joris Van den Bossche
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In ARROW-3861 (https://github.com/apache/arrow/pull/7050), I "fixed" a bug that the partition columns are always included even when the user did a manual column selection.
> But apparently, this behaviour was being relied upon by dask. See the failing nightly integration tests: https://circleci.com/gh/ursa-labs/crossbow/11854?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link
> So the best option might be to just keep the "old" behaviour for the legacy ParquetDataset, when using the new datasets API ({{use_legacy_datasets=False}}), you get the new / correct behaviour.



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