tustvold opened a new issue, #3955: URL: https://github.com/apache/arrow-rs/issues/3955
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** <!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] (This section helps Arrow developers understand the context and *why* for this feature, in addition to the *what*) --> Currently `DataType` and `Schema` use `Box<Field>` and `Vec<Field>` for nested types such as `StructArray`, etc... This has a couple of drawbacks: * `Field` is not cheap to clone, involving cloning `String`, `DataType`, and potentially `HashMap` * `DataType` comparison cannot make use of cheap pointer comparison * Converting between `DataType::Struct` and `Schema` is unnecessarily expensive **Describe the solution you'd like** <!-- A clear and concise description of what you want to happen. --> `DataType` should be updated to use `Arc<Field>` instead of `Box<Field>` and `Arc<[Field]>` instead of `Vec<Field>`. Similarly `Schema::new` should be updated to accept `impl Into<Arc<[Field]>>` **Describe alternatives you've considered** <!-- A clear and concise description of any alternative solutions or features you've considered. --> **Additional context** <!-- Add any other context or screenshots about the feature request 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]
