alamb commented on issue #6709:
URL: https://github.com/apache/arrow-rs/issues/6709#issuecomment-2591261713
This would largely defeat the purpose of using mmap, as it will perform a
copy.
This code compiles and I don't think it makes a copy 🤔 Maybe I am missing
something
```rust
let file = std::fs::File::open("/tmp/foo.txt").unwrap();
let mmap = unsafe { Mmap::map(&file).unwrap() };
let mut cursor = std::io::Cursor::new(&mmap[..]);
let mut reader = arrow::ipc::reader::FileReader::try_new(&mut cursor,
None).unwrap();
for b in reader.next().unwrap() {
println!("{:?}", b);
}
```
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