[jira] [Commented] (BEAM-11839) Attach a "reason" message to Singleton partitioning

["Brian Hulette (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-11839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17338684#comment-17338684 ] 

Brian Hulette commented on BEAM-11839:
--------------------------------------

This was mostly addressed in pr/14566. There were a couple of TODOs there around the agg method, which will be closed in https://github.com/apache/beam/pull/14438

> Attach a "reason" message to Singleton partitioning
> ---------------------------------------------------
>
>                 Key: BEAM-11839
>                 URL: https://issues.apache.org/jira/browse/BEAM-11839
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-py-core
>            Reporter: Brian Hulette
>            Priority: P2
>              Labels: dataframe-api
>          Time Spent: 8h 20m
>  Remaining Estimate: 0h
>
> When Singleton partitioning is required, we should be able to attach a reason to it so we can raise a helpful message to the user later, e.g.  {{partitionings.Singleton(reason="Only 'pearson' correlation can be computed in a distributed manner, other methods require Singleton partitioning")}}



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