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Type: Bug
Resolution: Done
Priority: Critical
Fix Version/s: 8.1 Update 4
Affects Version/s: 8.1.0.GA
Component/s: Web Services
Labels:
- reproducer_included

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Target Release:

8.1.z.GA
Steps to Reproduce:
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With the attached reproducer app and byteman rule:

1. Have two EAP 8.1 instances, one or port 8080 with helloworld-ws.war and the other on 8180 with helloworld-ws-client.war deployed
2. configure node 2 with byteman using the included ~~JBEAP-31681~~.btm root like below in its JVM options:

-javaagent:<mypath>/lib/byteman.jar=script:<mypath>/JBEAP-31691.btm,boot:<mypath>/lib/byteman.jar -Dorg.jboss.byteman.transform.all

3. start node 1 and node 2:

$NODE1_HOME/bin/standalone.sh $NODE2_HOME/bin/standalone.sh -Djboss.socket.binding.port-offset=100

4. Send following request to node2 to initiate its concurrent ws client creation attempts and note the thrown ConcurrentModificationExceptions:

curl localhost:8180/HelloWorld/foo
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With the attached reproducer app and byteman rule: 1. Have two EAP 8.1 instances, one or port 8080 with helloworld-ws.war and the other on 8180 with helloworld-ws-client.war deployed 2. configure node 2 with byteman using the included JBEAP-31681 .btm root like below in its JVM options: -javaagent:<mypath>/lib/byteman.jar=script:<mypath>/JBEAP-31691.btm,boot:<mypath>/lib/byteman.jar -Dorg.jboss.byteman.transform.all 3. start node 1 and node 2: $NODE1_HOME/bin/standalone.sh $NODE2_HOME/bin/standalone.sh -Djboss.socket.binding.port-offset=100 4. Send following request to node2 to initiate its concurrent ws client creation attempts and note the thrown ConcurrentModificationExceptions: curl localhost:8180/HelloWorld/foo
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Randomly stumbled on this failure in CI:

https://ci.wildfly.org/viewLog.html?buildId=517983&buildTypeId=WF_PullRequest_LinuxJdk17&fromSakuraUI=true

BridgeFromJTATestCase.testRollback failed.

The interesting bit was in the server.log:

31m23:53:22,778 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC000001: Failed to start service jboss.ws.endpoint-deploy.ws-t11-client: org.jboss.msc.service.StartException in service jboss.ws.endpoint-deploy.ws-t11-client: jakarta.xml.ws.WebServiceException: java.util.ConcurrentModificationException
	at org.jboss.as.webservices//org.jboss.as.webservices.service.EndpointDeployService.start(EndpointDeployService.java:55)
	at org.jboss.msc@1.5.6.Final//org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1553)
	at org.jboss.msc@1.5.6.Final//org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1516)
	at org.jboss.msc@1.5.6.Final//org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1374)
	at org.jboss.threads@3.9.1//org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
	at org.jboss.threads@3.9.1//org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2651)
	at org.jboss.threads@3.9.1//org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2630)
	at org.jboss.threads@3.9.1//org.jboss.threads.EnhancedQueueExecutor.runThreadBody(EnhancedQueueExecutor.java:1622)
	at org.jboss.threads@3.9.1//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1589)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: jakarta.xml.ws.WebServiceException: java.util.ConcurrentModificationException
	at org.apache.cxf.impl//org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:373)
	at org.jboss.ws.cxf.jbossws-cxf-server@7.3.3.Final//org.jboss.wsf.stack.cxf.deployment.EndpointImpl.doPublish(EndpointImpl.java:77)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.EndpointImpl.publish(EndpointImpl.java:255)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.EndpointImpl.publish(EndpointImpl.java:541)
	at org.jboss.ws.cxf.jbossws-cxf-server@7.3.3.Final//org.jboss.wsf.stack.cxf.configuration.BusHolder.configure(BusHolder.java:233)
	at org.jboss.ws.cxf.jbossws-cxf-server@7.3.3.Final//org.jboss.wsf.stack.cxf.deployment.aspect.BusDeploymentAspect.startDeploymentBus(BusDeploymentAspect.java:96)
	at org.jboss.ws.cxf.jbossws-cxf-server@7.3.3.Final//org.jboss.wsf.stack.cxf.deployment.aspect.BusDeploymentAspect.start(BusDeploymentAspect.java:57)
	at org.jboss.ws.common@5.1.0.Final//org.jboss.ws.common.deployment.DeploymentAspectManagerImpl.deploy(DeploymentAspectManagerImpl.java:115)
	at org.jboss.as.webservices//org.jboss.as.webservices.publish.EndpointPublisherImpl.doDeploy(EndpointPublisherImpl.java:150)
	at org.jboss.as.webservices//org.jboss.as.webservices.publish.EndpointPublisherHelper.doDeployStep(EndpointPublisherHelper.java:44)
	at org.jboss.as.webservices//org.jboss.as.webservices.service.EndpointDeployService.start(EndpointDeployService.java:53)
	... 9 more
Caused by: java.util.ConcurrentModificationException
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1221)
	at org.glassfish.jaxb//org.glassfish.jaxb.runtime.v2.model.impl.TypeInfoSetImpl.getXmlNs(TypeInfoSetImpl.java:298)
	at org.glassfish.jaxb//org.glassfish.jaxb.runtime.v2.schemagen.XmlSchemaGenerator$Namespace.writeTo(XmlSchemaGenerator.java:551)
	at org.glassfish.jaxb//org.glassfish.jaxb.runtime.v2.schemagen.XmlSchemaGenerator.write(XmlSchemaGenerator.java:413)
	at org.glassfish.jaxb//org.glassfish.jaxb.runtime.v2.runtime.JAXBContextImpl.generateSchema(JAXBContextImpl.java:770)
	at org.apache.cxf@4.0.9//org.apache.cxf.common.jaxb.JAXBUtils.generateJaxbSchemas(JAXBUtils.java:810)
	at org.apache.cxf.impl//org.apache.cxf.jaxb.JAXBDataBinding.generateJaxbSchemas(JAXBDataBinding.java:474)
	at org.apache.cxf.impl//org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:391)
	at org.apache.cxf@4.0.9//org.apache.cxf.service.factory.AbstractServiceFactoryBean.initializeDataBindings(AbstractServiceFactoryBean.java:87)
	at org.apache.cxf.impl//org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass(ReflectionServiceFactoryBean.java:469)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.buildServiceFromClass(JaxWsServiceFactoryBean.java:693)
	at org.apache.cxf.impl//org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:529)
	at org.apache.cxf.impl//org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:262)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.create(JaxWsServiceFactoryBean.java:199)
	at org.apache.cxf.impl//org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:103)
	at org.apache.cxf.impl//org.apache.cxf.frontend.ServerFactoryBean.create(ServerFactoryBean.java:168)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.JaxWsServerFactoryBean.create(JaxWsServerFactoryBean.java:210)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.EndpointImpl.getServer(EndpointImpl.java:458)
	at org.apache.cxf.impl//org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:336)
	... 19 more

Followed later by:

31m23:53:23,043 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("subsystem" => "xts")]) - Stage: (VERIFY) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.ws.endpoint-deploy.ws-t11-client" => "jakarta.xml.ws.WebServiceException: java.util.ConcurrentModificationException
    Caused by: jakarta.xml.ws.WebServiceException: java.util.ConcurrentModificationException
    Caused by: java.util.ConcurrentModificationException"},
    "WFLYCTL0412: Required services that are not installed:" => [
        "jboss.ws.endpoint.\"ws-t11-client.deployment\".TerminationParticipantService",
        "jboss.ws.endpoint.\"ws-t11-client.deployment\".CompletionInitiatorService"
    ],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => ["service jboss.ws.endpoint-publish.ws-t11-client is missing [jboss.ws.endpoint.\"ws-t11-client.deployment\".TerminationParticipantService, jboss.ws.endpoint.\"ws-t11-client.deployment\".CompletionInitiatorService]"]
}
&amp#27;[0m&amp#27;[0m23:53:23,079 INFO  [org.jboss.as.controller] (Controller Boot Thread) WFLYCTL0183: Service status report
WFLYCTL0184:    New missing/unsatisfied dependencies:
      service jboss.ws.endpoint."ws-t11-client.deployment".CompletionInitiatorService (missing) dependents: [service jboss.ws.endpoint-publish.ws-t11-client] 
      service jboss.ws.endpoint."ws-t11-client.deployment".TerminationParticipantService (missing) dependents: [service jboss.ws.endpoint-publish.ws-t11-client] 
WFLYCTL0186:   Services which failed to start:      service jboss.ws.endpoint-deploy.ws-t11-client: jakarta.xml.ws.WebServiceException: java.util.ConcurrentModificationException
WFLYCTL0448: 2 additional services are down due to their dependencies being missing or failed

I assume the server.log stuff is why the test failed.

In any case a ConcurrentModificationException like that is not good.

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JBEAP-31691.btm
2025/12/18 7:52 PM
0.7 kB
Aaron Ogburn
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JBEAP-31691reproducer.zip
2025/12/18 9:07 PM
20 kB
Aaron Ogburn
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JBEAP-31691reproducer.zip
2025/12/18 9:07 PM
20 kB
Aaron Ogburn

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WFLY-20914 ConcurrentModificationException in org.jboss.as.webservices.service.EndpointDeployService.start

Resolved

is incorporated by

JBEAP-31690 [GSS](8.1.z) Upgrade Jakarta XML Binding Implementation to 4.0.6

Resolved

Assignee:: Richard Opalka

Reporter:: Aaron Ogburn

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Created:: 2025/12/18 12:14 AM

Updated:: 2025/12/18 9:35 PM

Resolved:: 2025/12/18 9:34 PM

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