[jboss-jira] [JBoss JIRA] (WFLY-5206) Intermittent NPE when invoking method requestDestroyed

[Michal Vinkler (JIRA)]

Michal Vinkler created WFLY-5206:
------------------------------------

             Summary: 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
            Reporter: Michal Vinkler
            Assignee: Stuart Douglas


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-ejbservlet-undeploy-repl-sync/5/console-perf19/

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-ejbservlet-shutdown-repl-async/6/console-perf18/

May be relevant to https://issues.jboss.org/browse/JBEAP-863 as both errors come together, under the same conditions.



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