[jboss-jira] [JBoss JIRA] (WFLY-7495) Using mod_cluster custom mbean metric class intermittently fails with "NoClassDefFoundError: javax/management/MalformedObjectNameException"

Using mod_cluster custom mbean metric class intermittently fails with "NoClassDefFoundError: javax/management/MalformedObjectNameException" ------------------------------------------------------------------------------------------------------------------------------------------- Key: WFLY-7495 URL: https://issues.jboss.org/browse/WFLY-7495 Project: WildFly Issue Type: Bug Components: mod_cluster Affects Versions: 10.1.0.Final Reporter: Radoslav Husar Assignee: Radoslav Husar {noformat} <subsystem xmlns="urn:jboss:domain:modcluster:2.0"> <mod-cluster-config advertise-socket="modcluster" proxies="proxy1" connector="ajp"> <dynamic-load-provider> <custom-load-metric class="org.jboss.modcluster.load.metric.impl.MBeanAttributeLoadMetric" capacity="5.0"> <property name="pattern" value="com.acme.metrics:service=InitialDownloadResult"/> <property name="attribute" value="CurrentRequestCount"/> </custom-load-metric> </dynamic-load-provider> </mod-cluster-config> </subsystem> {noformat} yields intermittently {noformat} 19:40:03,880 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 50) WFLYCTL0013: Operation ("add") failed - address: ([("subsystem" => "modcluster")]): java.lang.NoClassDefFoundError: javax/management/MalformedObjectNameException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.jboss.common.beans.property.BeanUtils.findClass(BeanUtils.java:146) at org.jboss.common.beans.property.finder.DefaultPropertyEditorFinder.find(DefaultPropertyEditorFinder.java:185) at org.jboss.common.beans.property.BeanUtils.mapJavaBeanProperties(BeanUtils.java:308) at org.wildfly.extension.mod_cluster.ModClusterSubsystemAdd.addLoadMetrics(ModClusterSubsystemAdd.java:354) at org.wildfly.extension.mod_cluster.ModClusterSubsystemAdd.getModClusterLoadProvider(ModClusterSubsystemAdd.java:294) at org.wildfly.extension.mod_cluster.ModClusterSubsystemAdd.performBoottime(ModClusterSubsystemAdd.java:124) at org.jboss.as.controller.AbstractBoottimeAddStepHandler.performBoottime(AbstractBoottimeAddStepHandler.java:157) at org.jboss.as.controller.AbstractBoottimeAddStepHandler.performRuntime(AbstractBoottimeAddStepHandler.java:116) at org.jboss.as.controller.AbstractAddStepHandler$1.execute(AbstractAddStepHandler.java:151) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:890) at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:659) at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:370) at org.jboss.as.controller.ParallelBootOperationStepHandler$ParallelBootTask.run(ParallelBootOperationStepHandler.java:359) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) at org.jboss.threads.JBossThread.run(JBossThread.java:320) Caused by: java.lang.ClassNotFoundException: javax.management.MalformedObjectNameException from [Module "org.jboss.common-beans:main" from local module loader @6956de9 (finder: local module finder @769c9116 (roots: /Users/rhusar/STATIC/wf10/load/wildfly-10.0.0.Final/modules,/Users/rhusar/STATIC/wf10/load/wildfly-10.0.0.Final/modules/system/layers/base))] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:198) at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93) ... 19 more {noformat}