[abhinav-t]

I think that WarpStream relying on a proprietary metadata store isn't an issue for Jepsen tests. If I understand correctly, Jepsen tests treat the distributed databases (or logs like Kafka) pretty much as a black box. Jepsen tests introduce partitions and look for missing/unexpected items against the items that were acknowledged as written successfully by the system.

If you look at Kyle's blog post, https://aphyr.com/posts/293-jepsen-kafka, there is no mention of looking into a broker's storage or any storage for that matter.