settings.setBooleanProperty("persistentStore.useJournal", true);
settings.setIntProperty("persistentStore.maxBlockCount", 10000);
settings.setIntProperty("persistentStore.autoExtendAmount", 500);
QueueDefinition queueDef = new QueueDefinition(settings);
LinkedDataStore dataStore = new JournalingBlockBasedDataStore(queueDef,asyncTaskManager);
dataStore.init();
return dataStore;
}