Have parallel iterators been removed?

The current (1.6) docs return a 404 for the page about parallel iterators: https://docs.ray.io/en/latest/iter.html

Has this capability been moved to another part of the API? Using a different name?

Or is it an error in the documentation?

It seems to be an error in the documentation. The current version of the documentation points to the link below but that update is in latest not 1.6.

The iter documentation file was deleted in this commit. I am not sure why but presumably @ericl does.

Yes, parallel iterators have been soft deprecated (we want to encourage users to use Datasets: Datasets: Flexible Distributed Data Loading — Ray v2.0.0.dev0).

They’re still supported since they’re part of the public API of RLlib. But for most use cases we’ve seen the Dataset-like approach is much easier to use and has less ways to “shoot yourself in the foot”.