lebron374 removed a comment on issue #2127:
URL: https://github.com/apache/rocketmq/issues/2127#issuecomment-653702187


   > > > litePullConsumer
   > > 
   > > 
   > > litePullConsumer.start() should after 
litePullConsumer.setMessageQueueListener(mql)???
   > 
   > Both not work.
   > Below is the workaround:
   > `consumer.subscribe(topic, "*"); consumer.start(); consumer.poll(); 
consumer.setMessageQueueListener(mql);`
   
   @Override
           public void messageQueueChanged(String topic, Set<MessageQueue> 
mqAll, Set<MessageQueue> mqDivided) {
               MessageModel messageModel = 
defaultLitePullConsumer.getMessageModel();
               switch (messageModel) {
                   case BROADCASTING:
                       updateAssignedMessageQueue(topic, mqAll);
                       updatePullTask(topic, mqAll);
                       break;
                   case CLUSTERING:
                       updateAssignedMessageQueue(topic, mqDivided);
                       updatePullTask(topic, mqDivided);
                       break;
                   default:
                       break;
               }
           }
   


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