caishunfeng opened a new issue #6737: URL: https://github.com/apache/dolphinscheduler/issues/6737
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar issues. ### What happened branch: dev ``` [INFO] 2021-11-08 15:55:48.889 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 865, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.911 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 865, event type: SUCCESS [INFO] 2021-11-08 15:55:48.920 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 866, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.929 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 866, event type: SUCCESS [INFO] 2021-11-08 15:55:48.936 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 867, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.942 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 867, event type: SUCCESS [INFO] 2021-11-08 15:55:48.948 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 868, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.956 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 868, event type: SUCCESS [INFO] 2021-11-08 15:55:48.963 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 868, event type: SUCCESS [INFO] 2021-11-08 15:55:48.966 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 869, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.969 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 869, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.975 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 869, event type: SUCCESS [INFO] 2021-11-08 15:55:48.975 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 869, event type: SUCCESS [INFO] 2021-11-08 15:55:48.982 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 870, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.986 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 870, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.994 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 870, event type: SUCCESS [INFO] 2021-11-08 15:55:49.007 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 870, event type: SUCCESS [INFO] 2021-11-08 15:55:49.009 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 871, event type: RUNNING_EXECUTION ``` from the log, can see that task id 870 has 4 event, 2 RUNNING_EXECUTION and 2 SUCCESS; grep 870 from the log ``` [INFO] 2021-11-08 15:55:48.844 org.apache.dolphinscheduler.server.master.runner.task.CommonTaskProcessor:[120] - task ready to submit: TaskInstance{id=870, name='parallel_01', taskType='SHELL', processInstanceId=741, processInstanceName='null', state=SUBMITTED_SUCCESS, firstSubmitTime=Mon Nov 08 15:55:48 CST 2021, submitTime=Mon Nov 08 15:55:48 CST 2021, startTime=null, endTime=null, host='null', executePath='null', logPath='null', retryTimes=0, alertFlag=NO, processInstance=null, processDefine=null, pid=0, appLink='null', flag=YES, dependency='null', duration=null, maxRetryTimes=0, retryInterval=1, taskInstancePriority=MEDIUM, processInstancePriority=MEDIUM, dependentResult='null', workerGroup='default', environmentCode=-1, environmentConfig='null', executorId=1, executorName='null', delayTime=0, dryRun=0} [INFO] 2021-11-08 15:55:48.856 org.apache.dolphinscheduler.server.master.processor.TaskAckProcessor:[79] - taskAckCommand : TaskExecuteAckCommand{taskInstanceId=870, startTime=Mon Nov 08 15:55:48 CST 2021, host='192.168.31.239:1234', status=1, logPath='/home/csf/javapath/dolphinscheduler/logs/882302276001792_1/741/870.log', executePath='/tmp/dolphinscheduler/exec/process/854201280159744/882302276001792_1/741/870', processInstanceId='741'} [INFO] 2021-11-08 15:55:48.858 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[1163] - remove task from stand by list, id: 870 name:parallel_01 [INFO] 2021-11-08 15:55:48.874 org.apache.dolphinscheduler.server.master.processor.TaskResponseProcessor:[80] - received command : TaskExecuteResponseCommand{taskInstanceId=870, status=7, endTime=Mon Nov 08 15:55:48 CST 2021, processId=6637, appIds=''} [INFO] 2021-11-08 15:55:48.982 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 870, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.986 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 870, event type: RUNNING_EXECUTION [INFO] 2021-11-08 15:55:48.986 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[370] - work flow 741 task 870 state:SUCCESS [INFO] 2021-11-08 15:55:48.988 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[370] - work flow 741 task 870 state:SUCCESS [INFO] 2021-11-08 15:55:48.994 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:MasterEventExecution, process id: 741, task id: 870, event type: SUCCESS [INFO] 2021-11-08 15:55:48.995 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[370] - work flow 741 task 870 state:SUCCESS [INFO] 2021-11-08 15:55:49.007 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[291] - handleEvent current Thread:Master-Exec-Thread, process id: 741, task id: 870, event type: SUCCESS [INFO] 2021-11-08 15:55:49.008 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[370] - work flow 741 task 870 state:SUCCESS ``` ### What you expected to happen Each event is processed only once ### How to reproduce Create parallel tasks and reduce the master threads. ### Anything else _No response_ ### Are you willing to submit PR? - [X] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. 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