[jira] [Assigned] (ARROW-9731) [C++][Dataset] Port "head" method from R to C++ Dataset Scanner

["Ben Kietzman (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-9731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben Kietzman reassigned ARROW-9731:
-----------------------------------

    Assignee: Weston Pace

> [C++][Dataset] Port "head" method from R to C++ Dataset Scanner
> ---------------------------------------------------------------
>
>                 Key: ARROW-9731
>                 URL: https://issues.apache.org/jira/browse/ARROW-9731
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Joris Van den Bossche
>            Assignee: Weston Pace
>            Priority: Major
>              Labels: dataset
>             Fix For: 3.0.0
>
>
> ARROW-9665 (https://github.com/apache/arrow/pull/7913) added amongst other things a {{head}} method for Dataset in R:
> https://github.com/apache/arrow/blob/586c060c8b1851f1077911fae6d02a10ed83e7fb/r/src/dataset.cpp#L266-L282
> It might be nice to move this to C++ and expose it on the python side as well (and since it's written already in C++ on the R side, it should be relatively straightforward to port I assume)



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