[GitHub] [arrow] ritchie46 edited a comment on pull request #9211: ARROW-11239: [Rust] Fixed equality with offsets and nulls

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ritchie46 edited a comment on pull request #9211:
URL: https://github.com/apache/arrow/pull/9211#issuecomment-761873563


   > @rdettai I understand that concern. Could you describe which areas do you get more pain from backward incompatible changes? I would be fine with a 1 release deprecation when feasible, at least on the `arrow` crate.
   
   It is mostly about the (builder/buffer related) functionality being removed without no immediately clear substitute. For instance [ArrayBuilder::append_data](https://docs.rs/arrow/2.0.0/arrow/array/trait.ArrayBuilder.html#tymethod.append_data), and several other API methods/traits. Another one was `BooleanType` not being a primitive anymore (I can understand the reason behind it). My crate is using a lot of the API surface, and 3 months of accumulated changes can be a real mess at once. 
   
   I think that the first case would be less problematic if it were possible to get mutable references to some inner types, as I could rebuild some of the logic and gracefully update.


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