markap14 commented on issue #3351: NIFI-2933 Remote input/output ports at any PG URL: https://github.com/apache/nifi/pull/3351#issuecomment-487713242 Thanks for rebasing, @ijokarumawak. Things seemed to work OK on a standalone, insecure nifi. Then I tried starting up a 2-node secure cluster. When I attempted to create a Process Group, I got an NPE: ``` 2019-04-29 15:30:27,425 ERROR [NiFi Web Server-25] o.a.nifi.web.api.config.ThrowableMapper An unexpected error has occurred: java.lang.RuntimeException: Failed to serialize entity for cluster replication. Returning Internal Server Error response. java.lang.RuntimeException: Failed to serialize entity for cluster replication at org.apache.nifi.cluster.coordination.http.replication.okhttp.OkHttpReplicationClient.serializeEntity(OkHttpReplicationClient.java:259) at org.apache.nifi.cluster.coordination.http.replication.okhttp.OkHttpReplicationClient.createRequestBody(OkHttpReplicationClient.java:233) at org.apache.nifi.cluster.coordination.http.replication.okhttp.OkHttpReplicationClient.prepareRequest(OkHttpReplicationClient.java:98) at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.performVerification(ThreadPoolRequestReplicator.java:619) at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.replicate(ThreadPoolRequestReplicator.java:445) at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.replicate(ThreadPoolRequestReplicator.java:301) at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.replicate(ThreadPoolRequestReplicator.java:227) at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.replicate(ThreadPoolRequestReplicator.java:164) at org.apache.nifi.web.api.ApplicationResource.replicateNodeResponse(ApplicationResource.java:1081) at org.apache.nifi.web.api.ApplicationResource.replicateNodeResponse(ApplicationResource.java:1053) at org.apache.nifi.web.api.ApplicationResource.replicate(ApplicationResource.java:1044) at org.apache.nifi.web.api.ApplicationResource.replicate(ApplicationResource.java:1028) at org.apache.nifi.web.api.ProcessGroupResource.createProcessGroup(ProcessGroupResource.java:1716) 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:497) at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:76) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:148) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:191) at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:200) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:103) at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104) at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268) at org.glassfish.jersey.internal.Errors.process(Errors.java:316) at org.glassfish.jersey.internal.Errors.process(Errors.java:298) at org.glassfish.jersey.internal.Errors.process(Errors.java:268) at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289) at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256) at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703) at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416) at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655) at org.apache.nifi.web.filter.RequestLogger.doFilter(RequestLogger.java:66) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:60) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:60) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:60) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:99) at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:58) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.apache.nifi.web.filter.TimerFilter.doFilter(TimerFilter.java:51) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.apache.nifi.web.filter.ExceptionFilter.doFilter(ExceptionFilter.java:46) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634) at org.apache.nifi.web.security.headers.StrictTransportSecurityFilter.doFilter(StrictTransportSecurityFilter.java:48) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.apache.nifi.web.security.headers.XSSProtectionFilter.doFilter(XSSProtectionFilter.java:48) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.apache.nifi.web.security.headers.ContentSecurityPolicyFilter.doFilter(ContentSecurityPolicyFilter.java:47) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.apache.nifi.web.security.headers.XFrameOptionsFilter.doFilter(XFrameOptionsFilter.java:48) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1317) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1219) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126) at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:724) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:219) at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:531) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:352) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102) at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:291) at org.eclipse.jetty.io.ssl.SslConnection$3.succeeded(SslConnection.java:151) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:762) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:680) at java.lang.Thread.run(Thread.java:745) Caused by: com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: org.apache.nifi.web.api.entity.ProcessGroupEntity["component"]->org.apache.nifi.web.api.dto.ProcessGroupDTO["inputPortCount"]) at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:394) at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:353) at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:316) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:727) at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155) at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719) at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) at com.fasterxml.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:2655) at com.fasterxml.jackson.core.base.GeneratorBase.writeObject(GeneratorBase.java:381) at org.apache.nifi.cluster.coordination.http.replication.okhttp.JsonEntitySerializer.serialize(JsonEntitySerializer.java:39) at org.apache.nifi.cluster.coordination.http.replication.okhttp.OkHttpReplicationClient.serializeEntity(OkHttpReplicationClient.java:253) ... 115 common frames omitted Caused by: java.lang.NullPointerException: null at org.apache.nifi.web.api.dto.ProcessGroupDTO.getInputPortCount(ProcessGroupDTO.java:112) 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:497) at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:688) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719) ... 125 common frames omitted ```
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