I know that an `Object` is treated as a generic data type by Flink and hence serialized using Kryo. I wonder if there is anything one can do to improve performance w.r.t. to the Kryo-based serializer or if that is simply an inherent worst case scenario and nothing can be done without actually switching to another (more specific, well-supported) data type, e.g., `String`.
Regards, Salva
