eye-gu opened a new issue, #14714: URL: https://github.com/apache/dolphinscheduler/issues/14714
### 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 [ERROR] 2023-08-07 16:32:11.287 +0800 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable:[737] - [WorkflowInstance-0][TaskInstance-0] - Start workflow error java.lang.NullPointerException: null at org.apache.dolphinscheduler.service.expand.CuringParamsServiceImpl.preBuildBusinessParams(CuringParamsServiceImpl.java:272) at org.apache.dolphinscheduler.server.master.runner.execute.TaskExecutionContextFactory.createTaskExecutionContext(TaskExecutionContextFactory.java:124) at org.apache.dolphinscheduler.server.master.runner.execute.DefaultTaskExecuteRunnableFactory.createTaskExecuteRunnable(DefaultTaskExecuteRunnableFactory.java:53) at org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable.tryToTakeOverTaskInstance(WorkflowExecuteRunnable.java:1410) at org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable.submitPostNode(WorkflowExecuteRunnable.java:1298) at org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable.startWorkflow(WorkflowExecuteRunnable.java:731) at org.apache.dolphinscheduler.server.master.runner.IWorkflowExecuteRunnable.call(IWorkflowExecuteRunnable.java:27) ### What you expected to happen refer What happened ### How to reproduce When one master node hangs and another node is fault-tolerant ### Anything else  The null pointer is because 'processInstance' is null, which comes from the cached 'taskInstance' in the 'taskInstanceMap'. ### Version dev ### 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. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
