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Posted to commits@dolphinscheduler.apache.org by GitBox <gi...@apache.org> on 2022/01/06 15:43:46 UTC

[GitHub] [dolphinscheduler] caishunfeng commented on issue #7788: [Bug] [MasterServer] Submit duplicate tasks

caishunfeng commented on issue #7788:
URL: https://github.com/apache/dolphinscheduler/issues/7788#issuecomment-1006691975


   ![image](https://user-images.githubusercontent.com/11962619/148408795-af6bbe70-01d3-478c-8a85-a83ed5091263.png)
   ![image](https://user-images.githubusercontent.com/11962619/148408951-9cb93aba-d4c1-41b1-9f43-978c981f64c0.png)
   ![454387769cb60b28eb72a754c53d6aa](https://user-images.githubusercontent.com/11962619/148407707-67564c2a-8920-4f28-af43-e97dfde6414b.png)
   ![698ec6741cfcebde7574d277fce2602](https://user-images.githubusercontent.com/11962619/148407751-8c127c2d-6bf0-4be7-87c3-d6b9c6ffd508.png)
   
   When task A fail and run `WorkflowExecuteThread.taskFinished`, it will add retry task into standby queue, which will submit by `WorkflowExecuteThread.submitPostNode` and `StateWheelExecuteThread.checkTask4Retry`;  When I add sleep 30s in `submitTaskInstanceToDB` like Figure 4, it will increase the probability of repeated retries. In this way, retry task A in standby list will be submit by `WorkflowExecuteThread.submitPostNode` because run task c, and then, `StateWheelExecuteThread.checkTask4Retry` add it into standby list and submit again.


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