alamb commented on issue #6709:
URL: https://github.com/apache/arrow-rs/issues/6709#issuecomment-2591281696
I verified that this does indeed compile:
```rust
let file = std::fs::File::open("/tmp/foo.txt").unwrap();
let mmap = unsafe { Mmap::map(&file).unwrap() };
let bytes = Bytes::from_owner(mmap);
let buffer = Buffer::from_bytes(bytes.into());
```
(and then you can use the
[example](https://docs.rs/arrow-ipc/latest/arrow_ipc/reader/struct.FileDecoder.html)
@tustvold mentions on `FileDecoder`)
For anyone following along this means the underlying arrow arrays will then
(re)use the mmap region
I agree an example would make this much easier to understand.
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