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

[asfimport]

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.

Reporter: Dewey Dunnington / @paleolimbot
Assignee: Dewey Dunnington / @paleolimbot

Related issues:

• [R] glimpse() errors if there is a UDF (is duplicated by)

PRs and other links:

• GitHub Pull Request #13706

_{Note: This issue was originally created as ARROW-17178. Please see the migration documentation for further details.}

[asfimport]

Dewey Dunnington / @paleolimbot:
Issue resolved by pull request 13706
#13706