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Posted to issues@beam.apache.org by "Brian Hulette (Jira)" <ji...@apache.org> on 2022/03/23 20:55:00 UTC

[jira] [Updated] (BEAM-14107) DataFrame API: Support deferred GroupBy.__len__ and GroupBy.ngroups

     [ https://issues.apache.org/jira/browse/BEAM-14107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Hulette updated BEAM-14107:
---------------------------------
    Description: We should be able to build a deferred operation that calculates the number of groups for these operations.  (was: 
 * len(GroupBy) and ngroups
 ** if groupers are all categorical _and_ observed=False or all boolean)

> DataFrame API: Support deferred GroupBy.__len__ and GroupBy.ngroups
> -------------------------------------------------------------------
>
>                 Key: BEAM-14107
>                 URL: https://issues.apache.org/jira/browse/BEAM-14107
>             Project: Beam
>          Issue Type: Improvement
>          Components: dsl-dataframe, sdk-py-core
>            Reporter: Andy Ye
>            Priority: P3
>              Labels: dataframe-api
>
> We should be able to build a deferred operation that calculates the number of groups for these operations.



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