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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/12/29 11:38:35 UTC

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

jorgecarleitao commented on pull request #9032:
URL: https://github.com/apache/arrow/pull/9032#issuecomment-752045697


   just FYI, I found the reason. `alloc_zeroed` is expensive. I am preparing a PR where this is addressed. There is some code atm that relies on `MutableBuffer::reserve` and `MutableBuffer::new` to allocate zeros (and not undefined), which I need to handle.


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