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Bryan Bende commented on NIFI-7622: ----------------------------------- Can you try to clarify the steps to reproduce this? I'm not really able to follow the above to make the error happen. > updateParameterContext NullPointerException on StandardProcessGroup.java:4220 > ----------------------------------------------------------------------------- > > Key: NIFI-7622 > URL: https://issues.apache.org/jira/browse/NIFI-7622 > Project: Apache NiFi > Issue Type: Bug > Affects Versions: 1.11.4 > Reporter: Eric Secules > Priority: Major > Attachments: Screen Shot 2020-07-08 at 11.04.37 PM.png > > > I am getting this null pointer exception when importing one versioned flow > from a registry which contains another versioned flow and each uses different > parameter contexts. > I am using version 1.11.4 of NiFi > This error is blocking me from developing flows which comprise common > components and project-specific components that use their own parameter > contexts. > Attached a screen cap of the state of the stack at > StandardProcessGroup.java:4220 > {code:java} > 2020-07-09 05:33:10,414 ERROR [NiFi Web Server-86] > o.a.nifi.web.api.config.ThrowableMapper An unexpected error has occurred: > java.lang.NullPointerException. Returning Internal Server Error response. > java.lang.NullPointerException: null > at > org.apache.nifi.groups.StandardProcessGroup.updateParameterContext(StandardProcessGroup.java:4220) > at > org.apache.nifi.groups.StandardProcessGroup.updateProcessGroup(StandardProcessGroup.java:3754) > at > org.apache.nifi.groups.StandardProcessGroup.addProcessGroup(StandardProcessGroup.java:4324) > at > org.apache.nifi.groups.StandardProcessGroup.updateProcessGroup(StandardProcessGroup.java:3876) > at > org.apache.nifi.groups.StandardProcessGroup.addProcessGroup(StandardProcessGroup.java:4324) > at > org.apache.nifi.groups.StandardProcessGroup.updateProcessGroup(StandardProcessGroup.java:3876) > at > org.apache.nifi.groups.StandardProcessGroup.addProcessGroup(StandardProcessGroup.java:4324) > at > org.apache.nifi.groups.StandardProcessGroup.updateProcessGroup(StandardProcessGroup.java:3876) > at > org.apache.nifi.groups.StandardProcessGroup.updateFlow(StandardProcessGroup.java:3653) > at > org.apache.nifi.web.dao.impl.StandardProcessGroupDAO.updateProcessGroupFlow(StandardProcessGroupDAO.java:408) > at > org.apache.nifi.web.dao.impl.StandardProcessGroupDAO$$FastClassBySpringCGLIB$$10a99b47.invoke(<generated>) > at > org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) > at > org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736) > at > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) > at > org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:84) > at > org.apache.nifi.audit.ProcessGroupAuditor.updateProcessGroupFlowAdvice(ProcessGroupAuditor.java:313) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627) > at > org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616) > at > org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) > at > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) > at > org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) > at > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) > at > org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671) > at > org.apache.nifi.web.dao.impl.StandardProcessGroupDAO$$EnhancerBySpringCGLIB$$202f172f.updateProcessGroupFlow(<generated>) > at > org.apache.nifi.web.StandardNiFiServiceFacade$14.update(StandardNiFiServiceFacade.java:5044) > at > org.apache.nifi.web.revision.NaiveRevisionManager.updateRevision(NaiveRevisionManager.java:117) > at > org.apache.nifi.web.StandardNiFiServiceFacade.updateProcessGroupContents(StandardNiFiServiceFacade.java:5040) > at > org.apache.nifi.web.StandardNiFiServiceFacade$$FastClassBySpringCGLIB$$358780e0.invoke(<generated>) > at > org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) > at > org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736) > at > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) > at > org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:84) > at > org.apache.nifi.web.NiFiServiceFacadeLock.proceedWithWriteLock(NiFiServiceFacadeLock.java:179) > at > org.apache.nifi.web.NiFiServiceFacadeLock.updateLock(NiFiServiceFacadeLock.java:66) > at sun.reflect.GeneratedMethodAccessor566.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)