[ARROW-17178] [R] Support head() in arrow_dplyr_query with user-defined function

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 10.0.0
• Component/s: R
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/32474
• Assignee: Dewey Dunnington
• Reporter: Dewey Dunnington
• Created: 22/Jul/22 01:49
• Updated: 11/Jan/23 11:49
• Resolved: 16/Sep/22 01:44

Description

After ARROW-16444 and ARROW-16703 we will have some arrow_dplyr_query objects whose pipeline can't contain head() after the part that calls R code. This is a very big feature not to support and we need to find a workaround. The full-on solution is to make sure that we support an R-level RecordBatchReader, but there may be a workaround that we can support in the meantime.

Issue Links

• is duplicated by: ARROW-17438 [R] glimpse() errors if there is a UDF
• links to: GitHub Pull Request #13706