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https://issues.apache.org/jira/browse/ARROW-16444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dewey Dunnington resolved ARROW-16444.
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Fix Version/s: 9.0.0
Resolution: Fixed
Issue resolved by pull request 13397
[https://github.com/apache/arrow/pull/13397]
> [R] Implement user-defined scalar functions in R bindings
> ---------------------------------------------------------
>
> Key: ARROW-16444
> URL: https://issues.apache.org/jira/browse/ARROW-16444
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Dewey Dunnington
> Assignee: Dewey Dunnington
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.0.0
>
> Time Spent: 26h 10m
> Remaining Estimate: 0h
>
> In ARROW-15639, user-defined (scalar) functions were implemented for Python.
> In ARROW-15841 and ARROW-15168 we developed some tooling and strategies for
> calling into R from non-R threads, so in theory we should be able to mirror
> the Python implementation (possibly with the constraint that we have to
> provide a way to return a {{Table}} instead of a {{RecordBatchReader}} if
> there are any user-defined functions, otherwise we can't guarantee the
> existence of an event loop to do the R evaluating?).
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