[jira] [Assigned] (ARROW-8342) [Python] dask and kartothek integration tests are failing

["Wes McKinney (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-8342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney reassigned ARROW-8342:
-----------------------------------

    Assignee: Wes McKinney

> [Python] dask and kartothek integration tests are failing
> ---------------------------------------------------------
>
>                 Key: ARROW-8342
>                 URL: https://issues.apache.org/jira/browse/ARROW-8342
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Joris Van den Bossche
>            Assignee: Wes McKinney
>            Priority: Blocker
>             Fix For: 0.17.0
>
>
> The integration tests for both dask and kartothek, and for both master and latest released version of them, started failing the last days.
> Dask latest: https://circleci.com/gh/ursa-labs/crossbow/10629?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link 
> Kartothek latest: https://circleci.com/gh/ursa-labs/crossbow/10604?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link
> I think both are related to the KeyValueMetadata changes (ARROW-8079).
> The kartothek one is clearly related, as it gives: TypeError: 'pyarrow.lib.KeyValueMetadata' object does not support item assignment
> And I think the dask one is related to the "pandas" key now being present twice, and therefore it is using the "wrong" one.



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