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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/12/28 19:56:21 UTC

[GitHub] [arrow] jhorstmann commented on pull request #9032: ARROW-11048: [Rust] Added bench to MutableBuffer

jhorstmann commented on pull request #9032:
URL: https://github.com/apache/arrow/pull/9032#issuecomment-751845418


   I think `Buffer::from` currently does another copy of the vec contents because it does not take ownership and because of the current alignment and padding requirements. We probably could add a zero-copy `Buffer::from_vec` method if we loosen those restrictions. Another interesting benchmark would be another version of `from_slice` that returns a `Vec` instead of `Buffer`, to see whether the extend/reallocate logic itself could be optimized.


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