The problem which Manik explains in https://github.com/infinispan/infinispan/pull/720#issuecomment-3123511 also affects the Codec classes created in 5.1 to deal with different versions of the Hot Rod protocol. IOW, we might have configured Hot Rod protocol 1.1 but you might see messages logged by Codec10 which might confuse people reading the logs.

So, apply Manik's suggestions to the codec classes in the Hot Rod client and server.