[jboss-jira] [JBoss JIRA] (WFCORE-1039) Intermittent failure in notification listener testing in org.jboss.as.jmx.rbac.JmxRbacEnabledTestCase

[Brian Stansberry (JIRA)]

     [ https://issues.jboss.org/browse/WFCORE-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Stansberry reopened WFCORE-1039:
--------------------------------------


Reopening; I missed that the test uses two different beans and only fixed one.

> Intermittent failure in notification listener testing in org.jboss.as.jmx.rbac.JmxRbacEnabledTestCase
> -----------------------------------------------------------------------------------------------------
>
>                 Key: WFCORE-1039
>                 URL: https://issues.jboss.org/browse/WFCORE-1039
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: JMX, Test Suite
>    Affects Versions: 2.0.0.CR6
>            Reporter: Brian Stansberry
>            Assignee: Brian Stansberry
>             Fix For: 2.0.0.CR7
>
>
> For a while we've seen rare failures of JMX tests that look like this:
> {code}
> java.lang.RuntimeException: java.security.PrivilegedActionException: javax.management.ListenerNotFoundException: Unknown listener
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase.checkMBeanAccess(JmxRbacTestCase.java:484)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase.testMonitorNonSensitiveMBeans(JmxRbacTestCase.java:219)
>    ...
> Caused by: java.security.PrivilegedActionException: null
>     at java.security.AccessController.doPrivileged(Native Method)
>     at javax.security.auth.Subject.doAs(Subject.java:422)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase.checkMBeanAccess(JmxRbacTestCase.java:254)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase.testMonitorNonSensitiveMBeans(JmxRbacTestCase.java:219)
>    ...
> Caused by: javax.management.ListenerNotFoundException: Unknown listener
>     at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.removeNotificationListener(DefaultMBeanServerInterceptor.java:1339)
>     at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.removeNotificationListener(DefaultMBeanServerInterceptor.java:1242)
>     at com.sun.jmx.mbeanserver.JmxMBeanServer.removeNotificationListener(JmxMBeanServer.java:870)
>     at org.jboss.as.jmx.PluggableMBeanServerImpl$TcclMBeanServer.removeNotificationListener(PluggableMBeanServerImpl.java:1544)
>     at org.jboss.as.jmx.PluggableMBeanServerImpl.removeNotificationListener(PluggableMBeanServerImpl.java:969)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase$1.run(JmxRbacTestCase.java:368)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase$1.run(JmxRbacTestCase.java:254)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at javax.security.auth.Subject.doAs(Subject.java:422)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase.checkMBeanAccess(JmxRbacTestCase.java:254)
>     at org.jboss.as.jmx.rbac.JmxRbacTestCase.testMonitorNonSensitiveMBeans(JmxRbacTestCase.java:219)
> {code}
> The problem is the TestModelMBean used by the test is not holding a ref to the "listenerWrapper" that the JVM MBeanServer passes into its addNotificationListener method. That allows that listenerWrapper to be gc'd, resulting in the failure of the removeNotificationListener call on the next line of the test.
> The test holding a ref to the listener doesn't matter, as it's a "listenerWrapper" object that matters.



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