ahuazhu commented on issue #1355: Each ConsumeMessageThread should have different thread name URL: https://github.com/apache/rocketmq/issues/1355#issuecomment-517272825 @duhenglucky Thanks for your reply. In some scenarios, it's necessary to create multi consumers. For example, suppose we have messages in two topics. One contains fewer messages, but each one takes a long consumption time, and the other is the opposite. In such a situation, subscribing these topics in one consumer maybe not a good choice. Because the few but heavy messages may block all ConsumeThreads, which leads to the another topic consumption latency. Here we need two isolated thread pools (consumer) for these two topics. For your second question, I think `ConsumerGroup` as a part of` ConsumeThread` name is more intuitive than `instance`.
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