HippoBaro opened a new issue, #9722: URL: https://github.com/apache/arrow-rs/issues/9722
**Describe the bug** Several independent code paths in the Parquet reader scale poorly with column count, leading to catastrophic performance on wide schemas. This epic-like issue tracks the general problem; individual PRs will reference it for context. **To Reproduce** N/A **Expected behavior** Parquet reader/writer operations and Arrow structures (RecordBatch, etc.) should scale linearly (ideally sub-linearly) with column count wherever practical. **Additional context** <!-- Add any other context about the problem here. --> -- 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]
