carols10cents opened a new issue, #5503:
URL: https://github.com/apache/arrow-rs/issues/5503
## What happened
Using a `Local` file object store, I called `copy` accidentally with a
`from` path that was not an existing file.
## What I expected to happen
I expected the `copy` to succeed before I realized my mistake 😂 But once I
realized the `from` file didn't exist, I expected `copy` to return an error.
## What happened instead
The operation I was doing that called `copy` timed out.
## To reproduce
If I add these lines to the `rename_and_copy` test function:
```rust
let nonexistent = Path::from("test3");
storage.copy(&nonexistent, &path2).await.unwrap_err();
```
and run the local tests, `file_test` will run forever.
If I change this line:
https://github.com/apache/arrow-rs/blob/ad3b4c92508a17ea679c9695a89f85c2cdcc4fcf/object_store/src/local.rs#L620
to be `Err(source) => match dbg!(source.kind()) {` and run the `file_test`
with `--nocapture`, I get infinite printouts of:
```
[src/local.rs:622] source.kind() = NotFound
```
When the `match` sees `NotFound`, it creates the parent directories and then
loops again:
https://github.com/apache/arrow-rs/blob/ad3b4c92508a17ea679c9695a89f85c2cdcc4fcf/object_store/src/local.rs#L622
... which won't fix the problem of `from` not being found.
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