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https://issues.apache.org/jira/browse/ARROW-12723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17476162#comment-17476162
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Krisztian Szucs commented on ARROW-12723:
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[~michalno] is this still valid?
> [C++][Compute] GroupBy: add unittests for individual components of hash group
> by
> --------------------------------------------------------------------------------
>
> Key: ARROW-12723
> URL: https://issues.apache.org/jira/browse/ARROW-12723
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 4.0.0
> Reporter: Michal Nowakiewicz
> Assignee: Michal Nowakiewicz
> Priority: Major
> Fix For: 7.0.0
>
>
> Add unit tests directly verifying individual building blocks of hash group by:
> - hash calculation
> - bit utilities introduced by hash group by
> - comparison
> - hash table core
> - encoding and decoding of column-oriented data to row-oriented format
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