[jboss-jira] [JBoss JIRA] (DROOLS-1381) ConcurrentModificationException in ServiceLoader in org.kie.server.services.impl.security.JACCIdentityProvider.getNameFromAdapter

Marek Schmidt (JIRA) issues at jboss.org
Wed Dec 14 07:13:00 EST 2016 

Marek Schmidt created DROOLS-1381:
-------------------------------------

             Summary: ConcurrentModificationException in ServiceLoader in org.kie.server.services.impl.security.JACCIdentityProvider.getNameFromAdapter
                 Key: DROOLS-1381
                 URL: https://issues.jboss.org/browse/DROOLS-1381
             Project: Drools
          Issue Type: Bug
          Components: kie server
    Affects Versions: 6.4.0.Final
            Reporter: Marek Schmidt
            Assignee: Edson Tirelli


Spotted a ConcurrentModificationException just after startup with multiple clients starting processes concurrently.

Seems the problem is unsynchronized access to the service loader in org.kie.server.services.impl.security.JACCIdentityProvider.getNameFromAdapter  , so it may only occur after startup  (e.g. when the node joins a busy cluster)

{noformat}
18:03:52,495 WARN  [org.drools.persistence.SingleSessionCommandService] (default-threads - 40) Could not commit session: java.util.ConcurrentModificationException
	at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719) [rt.jar:1.8.0_111]
	at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:752) [rt.jar:1.8.0_111]
	at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:750) [rt.jar:1.8.0_111]
	at java.util.ServiceLoader$1.next(ServiceLoader.java:479) [rt.jar:1.8.0_111]
	at org.kie.server.services.impl.security.JACCIdentityProvider.getNameFromAdapter(JACCIdentityProvider.java:98)
	at org.kie.server.services.impl.security.JACCIdentityProvider.getName(JACCIdentityProvider.java:50)
	at org.jbpm.kie.services.impl.audit.ServicesAwareAuditEventBuilder.buildEvent(ServicesAwareAuditEventBuilder.java:50)
	at org.jbpm.process.audit.JPAWorkingMemoryDbLogger.beforeProcessStarted(JPAWorkingMemoryDbLogger.java:137)
	at org.drools.core.event.ProcessEventSupport.fireBeforeProcessStarted(ProcessEventSupport.java:40)
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:207)
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:191)
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:183)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:1834)
	at org.drools.core.command.runtime.process.StartProcessCommand.execute(StartProcessCommand.java:122)
	at org.drools.core.command.runtime.process.StartProcessCommand.execute(StartProcessCommand.java:40)
	at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)
	at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:592)
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)
	at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:82)
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)
	at org.drools.persistence.jta.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:73)
	at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:385)
	at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:256)
	at org.jbpm.kie.services.impl.ProcessServiceImpl.startProcess(ProcessServiceImpl.java:97)
	at org.kie.server.services.jbpm.ProcessServiceBase.startProcess(ProcessServiceBase.java:86)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_111]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:133)
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:94)
	at org.kie.server.services.jbpm.JBPMKieContainerCommandServiceImpl.executeScript(JBPMKieContainerCommandServiceImpl.java:128)
	at org.kie.server.jms.KieServerMDB.onMessage(KieServerMDB.java:238)
	at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source) [:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:375)
	at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:86)
	at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:97)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:375)
	at org.openshift.kieserver.jms.redirect.RedirectInterceptor.doIntercept(RedirectInterceptor.java:190)
	at sun.reflect.GeneratedMethodAccessor51.invoke(Unknown Source) [:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptor.java:89)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.tx.EjbBMTInterceptor.handleInvocation(EjbBMTInterceptor.java:104)
	at org.jboss.as.ejb3.tx.BMTInterceptor.processInvocation(BMTInterceptor.java:60)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:93)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
	at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.invocationmetrics.WaitTimeInterceptor.processInvocation(WaitTimeInterceptor.java:43)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.security.SecurityContextInterceptor.processInvocation(SecurityContextInterceptor.java:89)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.deployment.processors.StartupAwaitInterceptor.processInvocation(StartupAwaitInterceptor.java:22)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:55)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.messagedriven.MessageDrivenComponentDescription$5$1.processInvocation(MessageDrivenComponentDescription.java:203)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
	at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:189)
	at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:185)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
	at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:73)
	at javax.jms.MessageListener$$$view5.onMessage(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor50.invoke(Unknown Source) [:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.jboss.as.ejb3.inflow.MessageEndpointInvocationHandler.doInvoke(MessageEndpointInvocationHandler.java:140)
	at org.jboss.as.ejb3.inflow.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:73)
	at com.sun.proxy.$Proxy137.onMessage(Unknown Source)
	at org.apache.activemq.ra.MessageEndpointProxy$MessageEndpointAlive.onMessage(MessageEndpointProxy.java:123)
	at org.apache.activemq.ra.MessageEndpointProxy.onMessage(MessageEndpointProxy.java:64)
	at org.apache.activemq.ActiveMQSession.run(ActiveMQSession.java:1038)
	at org.apache.activemq.ra.ServerSessionImpl.run(ServerSessionImpl.java:169)
	at org.jboss.jca.core.workmanager.WorkWrapper.run(WorkWrapper.java:215)
	at org.jboss.threads.SimpleDirectExecutor.execute(SimpleDirectExecutor.java:33)
	at org.jboss.threads.QueueExecutor.runTask(QueueExecutor.java:808)
	at org.jboss.threads.QueueExecutor.access$100(QueueExecutor.java:45)
	at org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:828)
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_111]
	at org.jboss.threads.JBossThread.run(JBossThread.java:122)

18:03:52,684 ERROR [org.kie.server.services.jbpm.JBPMKieContainerCommandServiceImpl] (default-threads - 40) Error while processing DescriptorCommand{service='ProcessService', method='startProcess', arguments='[org.kie.server.api.model.type.JaxbString at 6072ba29, org.kie.server.api.model.type.JaxbString at 93a367e]', marshallerFormat='xml', payload=<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<map-type>
    <entries/>
</map-type>
} command: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_111]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:133)
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:94)
	at org.kie.server.services.jbpm.JBPMKieContainerCommandServiceImpl.executeScript(JBPMKieContainerCommandServiceImpl.java:128)
	at org.kie.server.jms.KieServerMDB.onMessage(KieServerMDB.java:238)
	at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source) [:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:375)
	at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:86)
	at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:97)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:375)
	at org.openshift.kieserver.jms.redirect.RedirectInterceptor.doIntercept(RedirectInterceptor.java:190)
	at sun.reflect.GeneratedMethodAccessor51.invoke(Unknown Source) [:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptor.java:89)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.tx.EjbBMTInterceptor.handleInvocation(EjbBMTInterceptor.java:104)
	at org.jboss.as.ejb3.tx.BMTInterceptor.processInvocation(BMTInterceptor.java:60)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:93)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
	at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.invocationmetrics.WaitTimeInterceptor.processInvocation(WaitTimeInterceptor.java:43)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.security.SecurityContextInterceptor.processInvocation(SecurityContextInterceptor.java:89)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.deployment.processors.StartupAwaitInterceptor.processInvocation(StartupAwaitInterceptor.java:22)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:55)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ejb3.component.messagedriven.MessageDrivenComponentDescription$5$1.processInvocation(MessageDrivenComponentDescription.java:203)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
	at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:189)
	at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:185)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
	at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:73)
	at javax.jms.MessageListener$$$view5.onMessage(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor50.invoke(Unknown Source) [:1.8.0_111]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111]
	at org.jboss.as.ejb3.inflow.MessageEndpointInvocationHandler.doInvoke(MessageEndpointInvocationHandler.java:140)
	at org.jboss.as.ejb3.inflow.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:73)
	at com.sun.proxy.$Proxy137.onMessage(Unknown Source)
	at org.apache.activemq.ra.MessageEndpointProxy$MessageEndpointAlive.onMessage(MessageEndpointProxy.java:123)
	at org.apache.activemq.ra.MessageEndpointProxy.onMessage(MessageEndpointProxy.java:64)
	at org.apache.activemq.ActiveMQSession.run(ActiveMQSession.java:1038)
	at org.apache.activemq.ra.ServerSessionImpl.run(ServerSessionImpl.java:169)
	at org.jboss.jca.core.workmanager.WorkWrapper.run(WorkWrapper.java:215)
	at org.jboss.threads.SimpleDirectExecutor.execute(SimpleDirectExecutor.java:33)
	at org.jboss.threads.QueueExecutor.runTask(QueueExecutor.java:808)
	at org.jboss.threads.QueueExecutor.access$100(QueueExecutor.java:45)
	at org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:828)
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_111]
	at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: java.util.ConcurrentModificationException
	at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719) [rt.jar:1.8.0_111]
	at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:752) [rt.jar:1.8.0_111]
	at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:750) [rt.jar:1.8.0_111]
	at java.util.ServiceLoader$1.next(ServiceLoader.java:479) [rt.jar:1.8.0_111]
	at org.kie.server.services.impl.security.JACCIdentityProvider.getNameFromAdapter(JACCIdentityProvider.java:98)
	at org.kie.server.services.impl.security.JACCIdentityProvider.getName(JACCIdentityProvider.java:50)
	at org.jbpm.kie.services.impl.audit.ServicesAwareAuditEventBuilder.buildEvent(ServicesAwareAuditEventBuilder.java:50)
	at org.jbpm.process.audit.JPAWorkingMemoryDbLogger.beforeProcessStarted(JPAWorkingMemoryDbLogger.java:137)
	at org.drools.core.event.ProcessEventSupport.fireBeforeProcessStarted(ProcessEventSupport.java:40)
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:207)
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:191)
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:183)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:1834)
	at org.drools.core.command.runtime.process.StartProcessCommand.execute(StartProcessCommand.java:122)
	at org.drools.core.command.runtime.process.StartProcessCommand.execute(StartProcessCommand.java:40)
	at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)
	at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:592)
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)
	at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:82)
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)
	at org.drools.persistence.jta.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:73)
	at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:385)
	at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:256)
	at org.jbpm.kie.services.impl.ProcessServiceImpl.startProcess(ProcessServiceImpl.java:97)
	at org.kie.server.services.jbpm.ProcessServiceBase.startProcess(ProcessServiceBase.java:86)
	... 89 more
{noformat}



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