//This will create the TaskAttemptListener with TaskHeartbeatHandler
//RPC servers are not started
//task time out is reduced
//when attempt times out, heartbeat handler will send the lost event
//leading to Attempt failure
return new TaskAttemptListenerImpl(getContext(), null, null) {
@Override
public void startRpcServer(){};
@Override
public void stopRpcServer(){};
@Override