jorisvandenbossche commented on code in PR #36012:
URL: https://github.com/apache/arrow/pull/36012#discussion_r1238952785
##########
python/pyarrow/_parquet.pyx:
##########
@@ -1767,7 +1767,7 @@ cdef class ParquetWriter(_Weakrefable):
int64_t c_row_group_size
if row_group_size is None or row_group_size == -1:
- c_row_group_size = ctable.num_rows()
+ c_row_group_size = min(ctable.num_rows(), 1024*1024)
Review Comment:
Either way is fine for me, but so it would like the following (defined at
the top of the file, after the imports):
https://github.com/apache/arrow/blob/2ce4a38fcf1fbd0d759b6c2cdf657f27ee6f02a9/python/pyarrow/_dataset.pyx#L42-L46
(but for something that is not reused multiple times, it is less worth it, I
think)
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