While I was working with Apache Spark, I had a problem to write a FastUtil wrapper with Kryo Serializer. So I passed a day to working on it and I found a solution.
This is an example code that uses a Int2LongOpenHashMap wrapper that has public long counter attribute.
WrappedInt2LongOpenHashMap p = new WrappedInt2LongOpenHashMap(); p.addTo(220, 20); p.addTo(30, 5); p.addTo(30, 15); p.addTo(220, 5); p.counter = 10; p.inputName="prova"; System.out.println(p.counter); System.out.println("---------");
The Java default serializer works fine, it serializes HashMap and the counter attribute. Continua a leggere