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https://issues.apache.org/jira/browse/ARROW-4787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-4787:
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External issue URL: https://github.com/apache/arrow/issues/21306
> [C++] Include "null" values (perhaps with an option to toggle on/off) in hash
> kernel actions
> --------------------------------------------------------------------------------------------
>
> Key: ARROW-4787
> URL: https://issues.apache.org/jira/browse/ARROW-4787
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Francois Saint-Jacques
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.14.0
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> Null is a meaningful value in the context of analytics. We should have the
> option of considering it distinctly in e.g. {{ValueCounts}}
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