Details
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Bug
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Resolution: Unresolved
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Major
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None
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None
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False
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None
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False
Description
https://github.com/keycloak/keycloak/issues/21367
Environment:
EAP 7.4.11
RH SSO 7.6.2
RH SSO 7.6.2 EAP Adapters
Domain mode deployment
Issue happens randomly
Workaround exists
Customer has ear deployed to a servergroup , war inside the ear are secured using keycloak adapters. Customer is getting intermittent ConcurrentModificationException during JBoss EAP server start
(MSC service thread 1-4) MSC000001: Failed to start service org.wildfly.security.http-server-mechanism-factory."mensageria-core-web.war": org.jboss.msc.service.StartException in service org.wildfly.security.http-server-mechanism-factory."mensageria-core-web.war": Failed to start service at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1731) at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1559) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1363) at java.lang.Thread.run(Thread.java:750) Caused by: java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719) at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:752) at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:750) at org.jboss.dmr.ObjectModelValue.asPropertyList(ObjectModelValue.java:161) at org.jboss.dmr.ModelNode.asPropertyList(ModelNode.java:529) at org.keycloak.subsystem.adapter.extension.KeycloakAdapterConfigService.setJSONValues(KeycloakAdapterConfigService.java:267) at org.keycloak.subsystem.adapter.extension.KeycloakAdapterConfigService.getJSON(KeycloakAdapterConfigService.java:261) at org.keycloak.subsystem.adapter.extension.KeycloakHttpAuthenticationFactoryService.start(KeycloakHttpAuthenticationFactoryService.java:50) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1739) at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1701) ... 6 more
Issue looks similar to https://issues.redhat.com/browse/KEYCLOAK-7254 but there is no answer.
Currently there is a workaround, if they restart the EAP, issue resolved but customer wants to understand why is it happening and war files associated to the error message are not even deployed to the server group.
Customer has two server groups and both share the same profile. Each server group has different deployments.
One more thing, I found that the do observed slowness in their environments sometimes, can this CME happen due to the slowness? I can gather thread dumps if required but they don't know when this will happen.
If there is any issue with adapters, it might affect the elytron oidc adapters as well.
Let me know if this is a bug, I can open a jira.