[jboss-jira] [JBoss JIRA] (WFLY-10986) Concurrent Modification Exception when starting server with external JMS broker

[Martin Styk (JIRA)]

Martin Styk created WFLY-10986:
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             Summary: Concurrent Modification Exception when starting server with external JMS broker
                 Key: WFLY-10986
                 URL: https://issues.jboss.org/browse/WFLY-10986
             Project: WildFly
          Issue Type: Bug
          Components: JMS
    Affects Versions: 14.0.1.Final
            Reporter: Martin Styk
            Assignee: Jeff Mesnil
            Priority: Blocker


Start of a WildFly with resource adapter configured to remote messaging broker sometimes fails with following error.
{code}
ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service jboss.resourceadapters.ra."wmq.jmsra".CF: org.jboss.msc.service.StartException in service jboss.resourceadapters.ra."wmq.jmsra".CF: Failed to start service
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1728)
	at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1556)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1364)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
	at java.util.ArrayList$Itr.next(ArrayList.java:859)
	at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042)
	at org.jboss.as.connector.metadata.api.resourceadapter.ActivationSecurityUtil.isLegacySecurityRequired(ActivationSecurityUtil.java:41)
	at org.jboss.as.connector.subsystems.resourceadapters.ConnectionDefinitionService.start(ConnectionDefinitionService.java:68)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1736)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1698)
	... 6 more
{code}

This issue was introduced in fix for WFLY-9978 in [this commit |https://github.com/ehsavoie/wildfly/commit/8d35c77130c8ba8c47008e1de1225971fa5d8c2e]



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