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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/10/01 15:48:40 UTC

[GitHub] [arrow] jorgecarleitao commented on pull request #8307: ARROW-9753: [Rust] [DataFusion] Replaced Arc> by Box<>

jorgecarleitao commented on pull request #8307:
URL: https://github.com/apache/arrow/pull/8307#issuecomment-702227276


   I think that the reason is that an iterator like `RecordBatchReader` needs to be mutable to be iterated upon (regardless of whether we use `next_batch` or `into_iter`), while an `Arc` would require it to be immutable. `Box` implements `BorrowMut`, which addresses this.
   
   


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