[GitHub] [rocketmq-externals] ni-ze opened a new issue #788: [Rocketmq-flink] Rocketmq client does not guaranteed to be closed properly.

Tue, 17 Aug 2021 23:52:11 -0700 


ni-ze opened a new issue #788:
URL: https://github.com/apache/rocketmq-externals/issues/788


    
   
![image](https://user-images.githubusercontent.com/31175234/129850264-19ea2fd6-f628-4b3e-9039-2505f4431c4e.png)
   DefaultMQPullConsumer.start() in open method, and pull message in run method.
   
   DefaultMQPullConsumer.start() would create netty client and many other 
resources, It should guaranteed to be closed properly under any conditions.
   
   It is recommended to use as follows
   ```java
   DefaultMQPullConsumer consumer =null;
   try{
   //initializate
   ...
   
   //start
   consumer.start()
   
   //use
   ...
   
   
   } finally {
        if (consumer != null){
          consumer.shutdown();
     }
   }
   
   ```
   


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