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Posted to issues@beam.apache.org by "Brian Hulette (Jira)" <ji...@apache.org> on 2022/03/23 20:58:00 UTC

[jira] [Commented] (BEAM-14162) DataFrame groupby does not support Grouper objects

    [ https://issues.apache.org/jira/browse/BEAM-14162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17511488#comment-17511488 ] 

Brian Hulette commented on BEAM-14162:
--------------------------------------

Categorized this as a bug for now since I'm not sure how we handle this now. We probably fail in a not-very-helpful way.

> 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
>            Priority: P2
>
> 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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