lidavidm commented on issue #3454:
URL: https://github.com/apache/arrow-adbc/issues/3454#issuecomment-3333667548

   - `cancel` is something that by definition you want to call concurrently 
with some other method.
   - To do that, you must have the struct implement `Sync`. That is a base Rust 
requirement, correct me if not.
   - But then we can call any method concurrently, and I think that might be 
too much freedom. (At the very least, it means that the Rust implementation has 
to guard against this, or we need to make all drivers guard against this - 
currently they generally do not.)


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