lorenzhs commented on PR #51483: URL: https://github.com/apache/arrow/pull/51483#issuecomment-5893187126
No measurable speedup on files with a few dozen columns and reasonable row group sizes, but I have a workload on super wide files with tiny row groups (1600-ish columns, small file is 7.4MiB / 6 row groups, large file is 121MiB / 30 row groups). There, `parquet-scan` becomes ~3x faster on the small file (0.34 → 0.11s) and 1.8x faster on the large file (2.75 → 1.5s). I tried playing with `--batch_size` but it doesn't make much of a difference. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
