mapleFU opened a new issue, #36773: URL: https://github.com/apache/arrow/issues/36773
### Describe the enhancement requested According to https://github.com/apache/arrow/pull/36192 and https://github.com/apache/arrow/pull/36649 . `RowGroupReader` using a bitmap to control a column-level prebuffer. However, if all columns are selected, this will be a heavy overhead for building a bitmap multiple times. ### Component(s) C++, Parquet -- 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]
