wecharyu opened a new issue, #50778: URL: https://github.com/apache/arrow/issues/50778
### Describe the bug, including details regarding any error messages, version, and platform. `parquet::UpdateLevelHistogram` produces incorrect histograms when `max_level == 1` and the input contains more than 16,384 levels. The fast path processes input in chunks, but each iteration accumulates from `levels.begin()` instead of the current chunk iterator. As a result, the first chunk is counted repeatedly and later chunks are skipped. ### Component(s) C++ -- 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]
