tustvold commented on PR #6616: URL: https://github.com/apache/arrow-rs/pull/6616#issuecomment-2432753179
> It is not about should or shouldn't. Comet reuses underlying buffers in the native reader. This is not exclusive to Comet. Rust's memory model disallows aliasing buffers in this way - see [here](https://doc.rust-lang.org/nomicon/aliasing.html). What you describe contravenes this model and is therefore UB. If you cannot guarantee that comet's native reader won't reuse the buffer behind Rust's back, you have to copy the memory into a fresh allocation. -- 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]
