[GitHub] [dolphinscheduler] lenboo commented on issue #7504: [Bug] [sql] duplicate key value violates unique constraint "t_ds_error_command_pkey" in v2.0.1

Mon, 20 Dec 2021 23:03:37 -0800 


lenboo commented on issue #7504:
URL: 
https://github.com/apache/dolphinscheduler/issues/7504#issuecomment-998524204


   > i show src **v1.3.6** about MasterSchedulerService.java, i see the zk lock 
before `findOneCommand()` and `handleCommand()`: 
![image](https://user-images.githubusercontent.com/48642743/146813212-7c806fb9-21a1-48df-b35f-b0444577fac0.png)
   > 
   > **but in v2.0.1**: 
![image](https://user-images.githubusercontent.com/48642743/146813414-1b41dd5c-47de-47b2-98f4-3b982462037e.png)
   > 
   > I guess there's something wrong here? I don't have the skills to prove it. 
Can someone take a look at it? thank you
   
   yes, we remove the zk lock in version 2.0.1 , instead of splitting by 
command-id for different masters.


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