[NIFI-7556] NullPointerException when changing version of process group with versioned child process group

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.11.3, 1.11.4
• Component/s: Flow Versioning
• Assignee: Unassigned
• Reporter: Exidex
• Created: 18/Jun/20 12:29
• Updated: 10/Jul/20 18:40

Description

After adding versioned child process group to process group and pushing it to nifi registry I am unable to change the version of other instances of the same process group because of NullPointerException. Removing child process group resolved the issue.

Seams like this is related to NIFI-6985

2020-06-18 12:14:00,712 ERROR [Version Control Update Thread-1] org.apache.nifi.web.api.VersionsResource Failed to update flow to new version
java.lang.NullPointerException: null
	at org.apache.nifi.groups.StandardProcessGroup.addMissingParameters(StandardProcessGroup.java:4183)
	at org.apache.nifi.groups.StandardProcessGroup.updateParameterContext(StandardProcessGroup.java:4234)
	at org.apache.nifi.groups.StandardProcessGroup.updateProcessGroup(StandardProcessGroup.java:3754)
	at org.apache.nifi.groups.StandardProcessGroup.updateProcessGroup(StandardProcessGroup.java:3881)
	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$$EnhancerBySpringCGLIB$$c78ba84e.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$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:84)
	at org.apache.nifi.web.NiFiServiceFacadeLock.proceedWithWriteLock(NiFiServiceFacadeLock.java:179)
	at org.apache.nifi.web.NiFiServiceFacadeLock.updateLock(NiFiServiceFacadeLock.java:66)
	at sun.reflect.GeneratedMethodAccessor703.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671)
	at org.apache.nifi.web.StandardNiFiServiceFacade$$EnhancerBySpringCGLIB$$3086e9f1.updateProcessGroupContents(<generated>)
	at org.apache.nifi.web.api.VersionsResource.updateFlowVersion(VersionsResource.java:1628)
	at org.apache.nifi.web.api.VersionsResource.lambda$null$27(VersionsResource.java:1471)
	at org.apache.nifi.web.api.concurrent.AsyncRequestManager$2.run(AsyncRequestManager.java:117)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

Issue Links

• relates to: NIFI-7622 updateParameterContext NullPointerException on StandardProcessGroup.java:4220