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Posted to issues@arrow.apache.org by "Joris Van den Bossche (Jira)" <ji...@apache.org> on 2020/08/13 18:48:00 UTC

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

Joris Van den Bossche created ARROW-9731:
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             Summary: [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
            Reporter: Joris Van den Bossche
             Fix For: 2.0.0


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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