Nicola Crane created ARROW-15827:
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Summary: [R] Improve UX of write_dataset(..., max_rows_per_group)
Key: ARROW-15827
URL: https://issues.apache.org/jira/browse/ARROW-15827
Project: Apache Arrow
Issue Type: Improvement
Components: R
Reporter: Nicola Crane
When using {{write_dataset()}}, if we set {{max_rows_per_file}} without also
setting {{max_rows_per_group}}, we always get the error shown below.
{code:r}
library(arrow)
td <- tempfile()
dir.create(td)
write_dataset(mtcars, td, max_rows_per_file = 5L)
#> Error: Invalid: max_rows_per_group must be less than or equal to
max_rows_per_file
{code}
We should change the behaviour so we can specify one without having to also
specify the other.
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