lebron374 edited a comment on issue #2127:
URL: https://github.com/apache/rocketmq/issues/2127#issuecomment-653702287
> > > 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);`
the default MessageQueueListenerImpl like this,can you find some difference
```
org.apache.rocketmq.client.impl.consumer.DefaultLitePullConsumerImpl.MessageQueueListenerImpl
class MessageQueueListenerImpl implements MessageQueueListener {
@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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