Brian Hulette created BEAM-14162:
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Summary: DataFrame groupby does not support Grouper objects
Key: BEAM-14162
URL: https://issues.apache.org/jira/browse/BEAM-14162
Project: Beam
Issue Type: Bug
Components: dsl-dataframe
Reporter: Brian Hulette
pandas has the concept of a
[Grouper|https://pandas.pydata.org/docs/reference/api/pandas.Grouper.html],
which can be passed to groupby to provide additional metadata. Currently we
don't support these in the DataFrame API, we assume all arguments are just
labels.
We should explicitly reject these for now, then add support for them.
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