A question about restoring state with an additional variable with kryo

[Vishal Santoshi]

I have state in rocksDB that represents say

class A {
  String a
}

I now change my class and add another variable


Class A {
  String a;
  long b = 0;
}

How do I make sure that when reconstituting the state, kryo does not
complain? It tries to map the previous state to the new definition of Class
A and complains that it cannot read the value for `String b`.

Unfortunately the state is not using POJO serializer.

Thanks and Regards.

Vishal