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https://issues.apache.org/jira/browse/ARROW-14203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alessandro Molina reassigned ARROW-14203:
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Assignee: Eduardo Ponce (was: Alessandro Molina)
> [C++] Fix description of ExecBatch.length for Scalars in aggregate kernels
> --------------------------------------------------------------------------
>
> Key: ARROW-14203
> URL: https://issues.apache.org/jira/browse/ARROW-14203
> Project: Apache Arrow
> Issue Type: Bug
> Reporter: Eduardo Ponce
> Assignee: Eduardo Ponce
> Priority: Minor
> Labels: pull-request-available
> Fix For: 6.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> [The comment for the *length* data member of
> ExecBatch|https://github.com/apache/arrow/blob/master/cpp/src/arrow/compute/exec.h#L202-L211]
> states that it will always have a value of 1 for Scalar types. This is
> misleading/incorrect because for aggregate kernels you could have an
> ExecBatch formed by projecting just the partition columns from a batch, in
> which case you'd have scalar rows with a length > 1.
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