Intermittent NPE when invoking method requestDestroyed ------------------------------------------------------ Key: WFLY-5206 URL: https://issues.jboss.org/browse/WFLY-5206 Project: WildFly Issue Type: Bug Components: CDI / Weld Affects Versions: 10.0.0.Beta1 Reporter: Michal Vinkler Assignee: Stuart Douglas Fix For: 10.0.0.CR1 Setup: 4-node cluster, one node at time undeploys application (clusterbench-ee7.ear), while standalone clients keep calling the application. This error was seen during clustering failover testing in the following scenario: ejb-ejbservlet-repl-sync (failover of HTTP traffic accessing a servlet that locally invokes a stateful clustered EJB, with synchronously replicated cache) After undeploying application on perf19 (second node in the cluster), NullPointerException was logged 31 times in the server log. Stacktrace: {code} 2015/08/18 20:01:40:973 EDT [DEBUG][RMI TCP Connection(14)-10.16.90.52] HOST perf17.mw.lab.eng.bos.redhat.com:rootProcess:c - Going to undeploy: 'clusterbench-ee7.ear' from 'perf19' now. 2015/08/18 20:01:41:265 EDT [DEBUG][RMI TCP Connection(14)-10.16.90.52] HOST perf17.mw.lab.eng.bos.redhat.com:rootProcess:c - Requesting: { "operation" : "undeploy", "address" : [{ "deployment" : "clusterbench-ee7.ear" }] } 20:01:41,706 INFO [org.xnio] (RMI TCP Connection(14)-10.16.90.52) XNIO version 3.3.1.Final 20:01:41,918 INFO [org.xnio.nio] (RMI TCP Connection(14)-10.16.90.52) XNIO NIO Implementation Version 3.3.1.Final 20:01:41,969 INFO [org.jboss.remoting] (RMI TCP Connection(14)-10.16.90.52) JBoss Remoting version 4.0.9.Final [JBossINF] [0m[0m20:01:42,603 INFO [org.wildfly.extension.undertow] (ServerService Thread Pool -- 79) WFLYUT0022: Unregistered web context: /clusterbench [JBossINF] [0m[0m20:01:42,603 INFO [org.wildfly.extension.undertow] (ServerService Thread Pool -- 78) WFLYUT0022: Unregistered web context: /clusterbench-passivating [JBossINF] [0m[0m20:01:42,679 INFO [org.infinispan.eviction.impl.PassivationManagerImpl] (ServerService Thread Pool -- 78) ISPN000029: Passivating all entries to disk [JBossINF] [0m[0m20:01:42,679 INFO [org.infinispan.eviction.impl.PassivationManagerImpl] (ServerService Thread Pool -- 81) ISPN000029: Passivating all entries to disk [JBossINF] [0m[31m20:01:42,681 ERROR [io.undertow.servlet.request] (default task-46) UT015005: Error invoking method requestDestroyed on listener class org.jboss.weld.servlet.WeldInitialListener: java.lang.NullPointerException [JBossINF] at org.jboss.weld.servlet.WeldInitialListener.requestDestroyed(WeldInitialListener.java:135) [JBossINF] at io.undertow.servlet.core.ApplicationListeners.requestDestroyed(ApplicationListeners.java:225) [JBossINF] at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:325) [JBossINF] at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261) [JBossINF] at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80) [JBossINF] at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172) [JBossINF] at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199) [JBossINF] at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:778) [JBossINF] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [JBossINF] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [JBossINF] at java.lang.Thread.run(Thread.java:745) {code} Server log: http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-failover-ejb-e... We also see the very same error in the scenario where the nodes shutdown instead of undeploying application - right after the server shutdown has been requested (we do not use graceful shutdown yet). Server log: http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-failover-ejb-e... May be relevant to https://issues.jboss.org/browse/JBEAP-863 as both errors come together, under the same conditions.