The current version generator for the Hot Rod writes has the following format:

| view id (2 bytes) | rank (2 bytes) | version counter (4 bytes) |

It works fine for single cluster deployments but not for cross-site deployments. When cross-site is enabled, the view ID and rank may match, generating the same version on both sites.

For example, a single node on 2 sites will have the same view ID (it will be 1) and rank (once again 1 on both sites since they are the only member).

The only requirement is that versions are unique within the same key.