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https://issues.apache.org/jira/browse/ARROW-14254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17425713#comment-17425713
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Neal Richardson commented on ARROW-14254:
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Among the new challenges, now that we can evaluate more complex queries, is
that we don't always know how many rows we have in order to know how many to
sample.
> [C++] Return a random sample of rows from a query
> -------------------------------------------------
>
> Key: ARROW-14254
> URL: https://issues.apache.org/jira/browse/ARROW-14254
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Nicola Crane
> Priority: Major
> Labels: kernel
>
> Please can we have a kernel that returns a random sample of rows? We've had a
> request to be able to do this in R:
> https://github.com/apache/arrow-cookbook/issues/83
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