public void setup(boolean backPressureEnabled) { Config config = new Config() .setProperty(PROP_BACKPRESSURE_ENABLED, "" + backPressureEnabled) .setProperty(PROP_BACKPRESSURE_SYNCWINDOW, "1"); // we create a nice big cluster so that we have enough backups. HazelcastInstance[] cluster = createHazelcastInstanceFactory(BACKUPS + 1).newInstances(config); warmUpPartitions(cluster); local = cluster[0]; operationService = (OperationServiceImpl) getOperationService(local); backupHandler = operationService.operationBackupHandler; }