ChenYilei2016 commented on issue #2837: URL: https://github.com/apache/rocketmq/issues/2837#issuecomment-826275975
> 顺序消息要保证每个queue里面的消息被顺序消费，因此需要保证增加或减少消费者实例时，需要重新负载均衡时，只能有一个消费者实例分配到这个queue。并发消费不需要保证顺序性，因此不需要lock 也就是说 会存在多个consumer 同时消费一个queue的情况吧? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
