ConcurrentModificationException releasing JSF factories ------------------------------------------------------- Key: WFLY-2669 URL: https://issues.jboss.org/browse/WFLY-2669 Project: WildFly Issue Type: Bug Security Level: Public(Everyone can see) Components: JSF Affects Versions: 8.0.0.Beta1 Reporter: Jozef Hartinger Assignee: Farah Juma Saw this happen once. Probably a thread-safety problem in JSF API: {code} 5:04:37,876 ERROR [io.undertow.servlet.request] (MSC service thread 1-4) UT015005: Error invoking method contextDestroyed on listener class com.sun.faces.config.ConfigureListener: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:926) [rt.jar:1.7.0_45] at java.util.HashMap$ValueIterator.next(HashMap.java:954) [rt.jar:1.7.0_45] at javax.faces.FactoryFinder.releaseFactories(FactoryFinder.java:440) [jboss-jsf-api_2.2_spec-2.2.4.jar:2.2.4] at com.sun.faces.config.ConfigManager.releaseFactories(ConfigManager.java:808) [jsf-impl-2.2.4-jbossorg-1.jar:] at com.sun.faces.config.ConfigManager.destroy(ConfigManager.java:474) [jsf-impl-2.2.4-jbossorg-1.jar:] at com.sun.faces.config.ConfigureListener.contextDestroyed(ConfigureListener.java:329) [jsf-impl-2.2.4-jbossorg-1.jar:] at io.undertow.servlet.core.ApplicationListeners.contextDestroyed(ApplicationListeners.java:185) [undertow-servlet-1.0.0.Beta27.jar:1.0.0.Beta27] at io.undertow.servlet.core.DeploymentImpl.destroy(DeploymentImpl.java:216) [undertow-servlet-1.0.0.Beta27.jar:1.0.0.Beta27] at io.undertow.servlet.core.DeploymentManagerImpl.undeploy(DeploymentManagerImpl.java:523) [undertow-servlet-1.0.0.Beta27.jar:1.0.0.Beta27] at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.stopContext(UndertowDeploymentService.java:117) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.stop(UndertowDeploymentService.java:100) at org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2056) at org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2017) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_45] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_45] at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_45] {code}