[GitHub] [arrow] AlenkaF commented on issue #13197: Compute total number files written by write_table based on row_group_size

[GitBox <gi...@apache.org>]

AlenkaF commented on issue #13197:
URL: https://github.com/apache/arrow/issues/13197#issuecomment-1131598388

   I can be mistaken but as far as I understand `pq.write_table` produces a single parquet file with multiple row groups if `row_group_size` is specified. You can calculate the number of row groups by `table.num_rows/row_group_size`.
   
   To write in multiple parquet files you can use [`pq.write_to_dataset`](https://arrow.apache.org/docs/python/parquet.html#writing-to-partitioned-datasets). In this case the number of files will be defined by partitioning columns and their unique values.


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