Best serialization performance for `Objects`

[Salva Alcántara <sa...@gmail.com>]

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