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  1. JBoss BPMS Platform
  2. RHBPMS-4860

[GSS](6.4.z) Insufficient synchronization in ObjectModelResolverProvider

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Details

    • Bug
    • Resolution: Done
    • Major
    • 6.4.6
    • 6.4.1
    • jBPM Core
    • None

    • kie-server 6.4.0.Final-redhat-13 (BPMS 6.3.4)

    Description

      Immediately after server startup with parallel clients, the following error appeared in the logs, suggesting insufficient synchronization in ObjectModelResolverProvider initialization:

      11:59:17,735 WARN  [org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory] (http-10.1.3.249:8080-5) Unable to find ObjectModelResolver for mvel
11:59:17,736 ERROR [org.kie.server.remote.rest.jbpm.ProcessResource] (http-10.1.3.249:8080-5) Unexpected error during processing null: java.lang.NullPointerException
	at org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory.getInstanceFromModel(DefaultRegisterableItemsFactory.java:213)
	at org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory.getWorkItemHandlersFromDescriptor(DefaultRegisterableItemsFactory.java:260)
	at org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory.getWorkItemHandlers(DefaultRegisterableItemsFactory.java:84)
	at org.jbpm.runtime.manager.impl.KModuleRegisterableItemsFactory.getWorkItemHandlers(KModuleRegisterableItemsFactory.java:98)
	at org.jbpm.runtime.manager.impl.AbstractRuntimeManager.registerItems(AbstractRuntimeManager.java:119)
	at org.jbpm.runtime.manager.impl.PerProcessInstanceRuntimeManager$PerProcessInstanceInitializer.initKieSession(PerProcessInstanceRuntimeManager.java:514)
	at org.jbpm.runtime.manager.impl.RuntimeEngineImpl.getKieSession(RuntimeEngineImpl.java:70)
	at org.jbpm.kie.services.impl.ProcessServiceImpl.signalProcessInstance(ProcessServiceImpl.java:173)
	at org.kie.server.services.jbpm.ProcessServiceBase.signalProcessInstance(ProcessServiceBase.java:153)
	at org.kie.server.remote.rest.jbpm.ProcessResource.signalProcessInstance(ProcessResource.java:185)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_121]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_121]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_121]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_121]
	at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:168)
	at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:269)
	at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:227)
	at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:216)
	at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:583)
	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:565)
	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:130)
	at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:832)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:620)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:553)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:482)
	at org.openshift.kieserver.web.redirect.RedirectFilter.doFilter(RedirectFilter.java:150)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
	at org.openshift.kieserver.web.security.SecurityFilter.doFilter(SecurityFilter.java:73)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:512)
	at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:150)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:854)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:656)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926)
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_121]

11:59:17,736 WARN  [org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory] (http-10.1.3.249:8080-1) Unable to find ObjectModelResolver for mvel
11:59:17,738 ERROR [org.kie.server.remote.rest.jbpm.ProcessResource] (http-10.1.3.249:8080-1) Unexpected error during processing null: java.lang.NullPointerException
	at org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory.getInstanceFromModel(DefaultRegisterableItemsFactory.java:213)
	at org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory.getWorkItemHandlersFromDescriptor(DefaultRegisterableItemsFactory.java:260)
	at org.jbpm.runtime.manager.impl.DefaultRegisterableItemsFactory.getWorkItemHandlers(DefaultRegisterableItemsFactory.java:84)
	at org.jbpm.runtime.manager.impl.KModuleRegisterableItemsFactory.getWorkItemHandlers(KModuleRegisterableItemsFactory.java:98)
	at org.jbpm.runtime.manager.impl.AbstractRuntimeManager.registerItems(AbstractRuntimeManager.java:119)
	at org.jbpm.runtime.manager.impl.PerProcessInstanceRuntimeManager$PerProcessInstanceInitializer.initKieSession(PerProcessInstanceRuntimeManager.java:514)
	at org.jbpm.runtime.manager.impl.RuntimeEngineImpl.getKieSession(RuntimeEngineImpl.java:70)
	at org.jbpm.kie.services.impl.ProcessServiceImpl.signalProcessInstance(ProcessServiceImpl.java:173)
	at org.kie.server.services.jbpm.ProcessServiceBase.signalProcessInstance(ProcessServiceBase.java:153)
	at org.kie.server.remote.rest.jbpm.ProcessResource.signalProcessInstance(ProcessResource.java:185)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_121]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_121]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_121]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_121]
	at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:168)
	at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:269)
	at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:227)
	at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:216)
	at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:583)
	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:565)
	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:130)
	at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:832)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:620)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:553)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:482)
	at org.openshift.kieserver.web.redirect.RedirectFilter.doFilter(RedirectFilter.java:150)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
	at org.openshift.kieserver.web.security.SecurityFilter.doFilter(SecurityFilter.java:73)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:512)
	at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:150)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:854)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:656)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926)
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_121]

      see https://github.com/droolsjbpm/jbpm/blob/6.4.x/jbpm-runtime-manager/src/main/java/org/jbpm/runtime/manager/impl/DefaultRegisterableItemsFactory.java#L210

      and https://github.com/droolsjbpm/droolsjbpm-knowledge/blob/6.4.x/kie-internal/src/main/java/org/kie/internal/runtime/conf/ObjectModelResolverProvider.java#L37

      (seems like resolvers could be an non-null empty array still for the second thread, as it would not go into the synchronized block... )

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          Bug - A problem that impairs or prevents the functions of the product. JBPM-5697 Insufficient synchronization in ObjectModelResolverProvider

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved

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              swiderski.maciej Maciej Swiderski (Inactive)
              djeremiah David Murphy (Inactive)
              Marian Macik Marian Macik
              Marian Macik Marian Macik
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                Created:
                Updated:
                Resolved: