Any rationale for that? Problem with assembly qualified names is that they contain things like version or token number - which are not used elsewhere in serialization pipeline and can cause unexpected behavior when incremental upgrades are going to happen while pub/sub is working.

I think we should have an extension like this and use it everywhere, instead of AssemblyQualifiedName

    public static class TypeExtensions
    {
        public static string TypeQualifiedNameForManifest(this Type type)
        {
            return type == null ? string.Empty : $"{type.FullName}, {type.Assembly.GetName().Name}";
        }
    }

@alexvaluyskiy iirc correctly I added such an extension when updating persistence a while back, but it may be in persistence.

@Horusiath the rational is that without the assembly name, Type.GetType(...) returns null. But I'm all for having an extension method.

I'll create one if there isn't one already in the core Akka project and update my PR either tonight or tomorrow sometime.

Turns out that I missed the TypeQualifiedNameForManifest method on the base serializer. I've opted to use that instead of the AssemblyQualifiedName value.