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Posted to issues@arrow.apache.org by "SHIMA Tatsuya (Jira)" <ji...@apache.org> on 2022/09/15 13:32:00 UTC

[jira] [Created] (ARROW-17738) [R] dplyr::compute does not work for grouped arrow dplyr query

SHIMA Tatsuya created ARROW-17738:
-------------------------------------

             Summary: [R] dplyr::compute does not work for grouped arrow dplyr query
                 Key: ARROW-17738
                 URL: https://issues.apache.org/jira/browse/ARROW-17738
             Project: Apache Arrow
          Issue Type: Improvement
          Components: R
    Affects Versions: 9.0.0
            Reporter: SHIMA Tatsuya


{code:r}
mtcars |> arrow::arrow_table() |> dplyr::group_by(cyl) |> class()
#> [1] "arrow_dplyr_query"
mtcars |> arrow::arrow_table() |> dplyr::group_by(cyl) |> dplyr::compute() |> class()
#> [1] "arrow_dplyr_query"
mtcars |> arrow::arrow_table() |> dplyr::group_by(cyl) |> dplyr::collect(FALSE) |> class()
#> [1] "arrow_dplyr_query"
mtcars |> arrow::arrow_table() |> dplyr::group_by(cyl) |> arrow::as_arrow_table() |> class()
#> [1] "Table"        "ArrowTabular" "ArrowObject"  "R6"
{code}

It seems to revert to arrow dplyr query in the following line.
https://github.com/apache/arrow/blob/7cfdfbb0d5472f8f8893398b51042a3ca1dd0adf/r/R/dplyr-collect.R#L73-L75



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