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https://issues.apache.org/jira/browse/ARROW-12759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17386328#comment-17386328
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Neal Richardson commented on ARROW-12759:
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Yes (cc [~kszucs], there's probably a few others to fix)
> [C++][Compute] Wrap grouped aggregation in an ExecNode
> ------------------------------------------------------
>
> Key: ARROW-12759
> URL: https://issues.apache.org/jira/browse/ARROW-12759
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Ben Kietzman
> Assignee: Michal Nowakiewicz
> Priority: Major
> Labels: pull-request-available
> Fix For: 5.0.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> ARROW-11928 adds ExecNodes, to which GroupByNode should be added so that a
> dataset scan can terminate in a grouped aggregation
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