assignUser commented on code in PR #12799:
URL: https://github.com/apache/arrow/pull/12799#discussion_r843728947
##########
r/tests/testthat/test-dataset-write.R:
##########
@@ -506,6 +506,47 @@ test_that("Max partitions fails with non-integer values
and less than required p
)
})
+test_that("max_rows_per_group is adjusted if at odds with max_rows_per_file", {
+ skip_if_not_available("parquet")
+ df <- tibble::tibble(
+ int = 1:10,
+ dbl = as.numeric(1:10),
+ lgl = rep(c(TRUE, FALSE, NA, TRUE, FALSE), 2),
+ chr = letters[1:10],
+ )
+ dst_dir <- make_temp_dir()
+
+ # max_rows_per_group unset => pass
+ expect_silent(
+ write_dataset(df, dst_dir, max_rows_per_file = 5)
+ )
+
+ expect_equal(
+ {
+ write_dataset(df, dst_dir, max_rows_per_file = 5)
+ list.files(dst_dir, "part-") %>%
+ length()
+ },
+ 2
+ )
Review Comment:
Agree, I was unsure writing it and you worded my doubts clearly, thanks!
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