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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2018/12/27 13:08:14 UTC

[GitHub] ncl911 opened a new issue #642: 发送事务消息，发出多条一样的消息！

ncl911 opened a new issue #642: 发送事务消息，发出多条一样的消息！
URL: https://github.com/apache/rocketmq/issues/642
 
 
   版本4.3.0
   重现场景：
   在transactionlistener的executeLocalTransaction返回unknown，然后在checkLocalTransaction流程打上断点，卡住回查，待它多次回查时，再放开断点，发现发出了多条一样的消息，消息id也一样。
   prepare消息topic同一条消息数量
   ![image](https://user-images.githubusercontent.com/23656622/50480600-d83e5500-0a17-11e9-9712-d1dc49226a72.png)
   真实topic中同一消息数量
   ![image](https://user-images.githubusercontent.com/23656622/50480625-06239980-0a18-11e9-954d-a6efc0fbe2fd.png)
   
   导致一条消息发送了多次，消费者也消费了多次
   想知道为什么每次回查都要往prepare topic中放一条unknown消息，之前的消息已经存在，不应该是去更新消息状态之类的吗？？

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