JMX NullPointerException is thrown while calling MBeans on EAP

Solution Verified - Updated -

Issue

  • Accessing a JMX object with an asterisk in the domain (for example java*:type=GarbageCollector,*) throws a NPE.
  • We are using 3rd party tool for monitoring and are using a JMX connection and a WARN message occurs anytime the tool polls the server and it does not appear to affect functionality (NPE exception logged).

    WARN  [org.jboss.remotingjmx.protocol.v2.ServerCommon] (pool-2-thread-4745) Unexpected internal error: java.lang.NullPointerException
        at java.util.regex.Matcher.getTextLength(Matcher.java:1234) [rt.jar:1.7.0_79]
        at java.util.regex.Matcher.reset(Matcher.java:308) [rt.jar:1.7.0_79]
        at java.util.regex.Matcher.<init>(Matcher.java:228) [rt.jar:1.7.0_79]
        at java.util.regex.Pattern.matcher(Pattern.java:1088) [rt.jar:1.7.0_79]
        at org.jboss.as.jmx.model.ModelControllerMBeanServerPlugin.accepts(ModelControllerMBeanServerPlugin.java:111)
        at org.jboss.as.jmx.PluggableMBeanServerImpl.queryNames(PluggableMBeanServerImpl.java:803)
        at org.jboss.as.jmx.BlockingNotificationMBeanServer.queryNames(BlockingNotificationMBeanServer.java:133)
        at org.jboss.remotingjmx.protocol.v2.ServerProxy$QueryNamesHandler.handle(ServerProxy.java:1115)
        at org.jboss.remotingjmx.protocol.v2.ServerCommon$MessageReciever$1$1.run(ServerCommon.java:153)
        at org.jboss.as.jmx.ServerInterceptorFactory$Interceptor$1.run(ServerInterceptorFactory.java:75)
        at org.jboss.as.jmx.ServerInterceptorFactory$Interceptor$1.run(ServerInterceptorFactory.java:70)
        at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.7.0_79]
        at javax.security.auth.Subject.doAs(Subject.java:415) [rt.jar:1.7.0_79]
        at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:94) [jboss-as-controller-7.5.4.Final-redhat-4.jar:7.5.4.Final-redhat-4]
        at org.jboss.as.jmx.ServerInterceptorFactory$Interceptor.handleEvent(ServerInterceptorFactory.java:70)
        at org.jboss.remotingjmx.protocol.v2.ServerCommon$MessageReciever$1.run(ServerCommon.java:149)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_79]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_79]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_79]
    

Environment

  • Red Hat JBoss Enterprise Application Platform
    • 6
    • 7.0

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