haohuaijin opened a new issue, #11514: URL: https://github.com/apache/arrow-rs/issues/11514
### Is your feature request related to a problem or challenge? Parquet's mask-backed row selection cursor scans individual bits to locate selected rows and size read chunks. This adds overhead for fragmented or random selections when reading large files. Scan masks in 64-bit words to reduce this overhead while preserving selected rows, batch sizes, and loaded-page boundaries. ### Describe the solution you'd like _No response_ ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- 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]
