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  1. WildFly
  2. WFLY-3396

NPE in TimerResourceDefinition

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Done
    • Affects Version/s: 8.1.0.CR2
    • Fix Version/s: 9.0.0.Alpha1
    • Component/s: EJB
    • Environment:

      JDK 1.7.0_55
      MacOSX
      PostgreSQL 9.1
      Wildfly 8.1.0.CR2
      Arquillian 1.1.2.Final-wildfly-1
      arquillian-protocol-servlet 1.1.2.Final-wildfly-1
      wildfly-arquillian-container-remote 8.1.0.CR2

      Description

      I am experiencing race conditions when running test remotely from Arquillian to Wildfly 8.1.0.CR2. In 2 of 3 Cases i get a NPE in Wildfly in relation to one of my own scheduled EJB.

      Stacktrace:

      10:08:56,169 INFO  [org.jboss.as.server] (management-handler-thread - 1) JBAS018559: Deployed "core-dist-0.6.ear" (runtime-name : "core-dist-0.6.ear")
      10:08:58,102 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 2) JBAS014612: Operation ("read-attribute") failed - address: ([
          ("deployment" => "core-dist-0.6.ear"),
          ("subdeployment" => "core.jar"),
          ("subsystem" => "ejb3"),
          ("singleton-bean" => "FileDeploymentScanner"),
          ("service" => "timer-service"),
          ("timer" => "53ca8249-b0a1-42ab-810b-abad39cb3d19")
      ]): java.lang.NullPointerException
      	at org.jboss.as.ejb3.subsystem.deployment.TimerResourceDefinition$10.readAttribute(TimerResourceDefinition.java:268)
      	at org.jboss.as.ejb3.subsystem.deployment.TimerResourceDefinition$AbstractReadAttributeHandler.executeRuntime(TimerResourceDefinition.java:364)
      	at org.jboss.as.ejb3.subsystem.deployment.TimerResourceDefinition$AbstractTimerHandler$1.execute(TimerResourceDefinition.java:330)
      	at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:606) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:484) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:281) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:276) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:271) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:145) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:199) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.access$300(ModelControllerClientOperationHandler.java:130) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:150) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:146) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.7.0_55]
      	at javax.security.auth.Subject.doAs(Subject.java:415) [rt.jar:1.7.0_55]
      	at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:94) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:146) [wildfly-controller-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:283) [wildfly-protocol-8.1.0.CR2.jar:8.1.0.CR2]
      	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:504) [wildfly-protocol-8.1.0.CR2.jar:8.1.0.CR2]
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_55]
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_55]
      	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_55]
      	at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final.jar:2.1.1.Final]
      

      The arquillian test prints:

       
      com.ieffects.core.integration.ImportTest STANDARD_ERROR
          May 23, 2014 10:08:49 AM org.xnio.Xnio <clinit>
          INFO: XNIO version 3.2.2.Final
          May 23, 2014 10:08:49 AM org.xnio.nio.NioXnio <clinit>
          INFO: XNIO NIO Implementation Version 3.2.2.Final
          May 23, 2014 10:08:49 AM org.jboss.remoting3.EndpointImpl <clinit>
          INFO: JBoss Remoting version 4.0.3.Final
          May 23, 2014 10:08:58 AM org.jboss.as.arquillian.container.ManagementClient checkSuccessful
          ERROR: Operation {
              "operation" => "read-resource",
              "recursive" => "true",
              "address" => undefined
          } did not succeed. Result was {
              "outcome" => "failed",
              "result" => {
                  "management-major-version" => 2,
                  "management-micro-version" => 0,
                  "management-minor-version" => 1,
                  "name" => "cust",
                  "namespaces" => [],
                  "product-name" => undefined,
                  "product-version" => undefined,
                  "profile-name" => undefined,
                  "release-codename" => "Kenny",
                  "release-version" => "8.1.0.CR2",
                  "schema-locations" => [],
                  "core-service" => {
                      "management" => {
                          "access" => {
                              "authorization" => {
      ... the complete wildfly configuration...
              },
              "rolled-back" => true
          }
      

      My scheduled Service FileDeploymentScanner is somewhat special, it schedules the times itself (No Schedule annotation. Simplified it looks like this:

      @ConcurrencyManagement(ConcurrencyManagementType.BEAN)
      @Singleton
      @Startup
      @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
      public class FileDeploymentScanner {
       
      	@Resource
      	private TimerService _timerService;
       
      	/**
      	 * Scans and deploys files according to configuration.
      	 */
      	@Timeout
      	public void handleClick() {
      		System.out.println("handle click");
      	}
       
      	/**
      	 * Initializes the service.
      	 */
      	@PostConstruct
      	public void startup() {
      		System.out.println("Starting timer service");
      		_timerService.createSingleActionTimer(10000, new TimerConfig("FileDeploymentScanner", false));
      		try {
      			Thread.sleep(10000);
      		} catch (InterruptedException e) {
      			// TODO Auto-generated catch block
      			e.printStackTrace();
      		}
      		System.out.println("Started timer service");
      	}
       
      }
      

      What is happening, is, the arquillian client apparently tries to read complete wildfly configuration (dont know why), and during this step it fails to do so. I failed to write reproducer ear/app. I can't release my closed source though which produces this error. But hopefully, this NPE is easy to fix.

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              • Assignee:
                swd847 Stuart Douglas
                Reporter:
                semubiz Serge Mürset
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                • Created:
                  Updated:
                  Resolved: