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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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