ARROW-18088: [CI][Python] Fix pandas master/nightly build failure related to timedelta#14460
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jorisvandenbossche merged 3 commits intoapache:masterfrom Oct 21, 2022
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@github-actions crossbow submit test-conda-python-3.8-pandas-nightly test-conda-python-3.9-pandas-master |
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Revision: ef43a9d Submitted crossbow builds: ursacomputing/crossbow @ actions-230243410b
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@github-actions crossbow submit test-conda-python-3.8-pandas-nightly test-conda-python-3.9-pandas-master |
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Pandas 2.0+ will now preserve the unit of a timedelta64/datetime64 numpy array that is passed to a DataFrame constructor, instead of always coercing to nanoseconds. But pyarrow will still use nanoseconds in the conversion to pandas, giving data type mismatches in the tests. For now, ensuring we always create pandas.DataFrames with datetime64[ns] across pandas versions. Longer term solution is ARROW-18124