When running a distributed task, the server sends back to the client a list of results from each nodes (actually a Collections$SynchronizedRandomAccessList since ISPN-11226), which is not marshallable with the default configuration (ProtostreamMarshaller). JavaSerializationMarshaller, GenericJBossMarshaller probably won't work without a whitelist configuration, either.

The server test suite doesn't cover distributed tasks, so we also need a new test, ideally testing all client marshallers.