alamb opened a new issue, #10245: URL: https://github.com/apache/arrow-rs/issues/10245
### Is your feature request related to a problem or challenge? As @Jefffrey has observed in https://github.com/apache/arrow-rs/pull/10229#discussion_r3496012625, switching from `OffsetBufferBuilder` / `BufferBuilder` to use `Vec<..>` often results in a non trivial speedup. This is likely because the Rust language has a *highly* optimized Vec implementation ### Describe the solution you'd like Basically try and change any code like this ```rust let mut values = BufferBuilder::<T::Native>::new(len); ``` To use ```rust let mut values = Vec<T::Native>::with_capacity(len); ``` And various equivalent ## Note to contributors: please make targeted PRs (that change one or two usages each) to keep the PRs easy to review and thus fast to merge ### 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]
