Deserialization of marshalled return values can happen from within JGroups thread context

MarshalledValues representing return values can be deserialized from within JGroups thread leading to CNFEs.

The following deserializes the return value in the remote node from within the JGroups thread:

public void testReturnValueDeserialization()

{ Cache cache1 = cache(0, "replSync"); Cache cache2 = cache(1, "replSync"); Pojo v1 = new Pojo(1); cache1.put("1", v1); Pojo previous = (Pojo) cache1.put("1", new Pojo(2)); assert previous.equals(v1); }

Need to dig further to find out why.