[GitHub] [rocketmq] BurningCN opened a new issue #2838: Get the element from the container before lock

Mon, 26 Apr 2021 02:25:31 -0700 


BurningCN opened a new issue #2838:
URL: https://github.com/apache/rocketmq/issues/2838


   Before adding the lock, try to get the element from the container, just like 
the double-check used elsewhere.
   
   The screenshot below:
   
![image](https://user-images.githubusercontent.com/43363120/116060118-25986300-a6b4-11eb-81c3-dafdf0b98550.png)
   


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