changyoutianxia commented on issue #6481:
URL: https://github.com/apache/rocketmq/issues/6481#issuecomment-1487075486

   > If I understand correctly. Invoke the method 
`setConsumeMessageBatchMaxSize()` on your builder to specify the message 
consumption batch size (`DefaultMQPushConsumer#consumeMessageBatchMaxSize`) you 
want. By default, `consumeMessageBatchMaxSize = 1`. By viewing the method 
`ConsumeMessageConcurrentlyService#submitConsumeRequest(4)`, you can understand 
the implementation details of consumption batching.
   
   in version 5  not exist DefaultMQPushConsumer  class


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