Hello Bansari, Does your model object have a huge number of nested objects? I'm not sure if it is the same case, but I had similar issue when trying to serialize a model with around 20 mi nested objects under the same object node. The issue was related with kryo not being able to handle this kind of object and the solution was spliting and storing it's parts in a Map, you also should consider serializing the splitted parts.
Refer to this issue: https://github.com/EsotericSoftware/kryo/issues/103 I hope it can help. Regards, Lucas
