QueueMetrics > Running QueueMetrics

Exception starting filter BalancerFilter java.lang.NoClassDefFoundError: org/ap

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coolname:
2010-06-02 10:05:32 StandardContext[/balancer]Exception starting filter BalancerFilter
java.lang.NoClassDefFoundError: org/apache/commons/digester/Digester
   at org.apache.webapp.balancer.RulesParser.createDigester(RulesParser.java:65)
   at org.apache.webapp.balancer.RulesParser.<init>(RulesParser.java:43)
   at org.apache.webapp.balancer.BalancerFilter.init(BalancerFilter.java:79)
   at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:225)
   at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:308)
   at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:79)
   at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3698)
   at org.apache.catalina.core.StandardContext.start(StandardContext.java:4349)
   at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
   at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
   at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
   at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277)
   at org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
   at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:701)
   at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432)
   at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
   at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
   at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
   at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
   at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
   at org.apache.catalina.core.StandardService.start(StandardService.java:480)
   at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
   at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:585)
   at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
   at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)

when i visit the QM today,the tomcat can't work ,logs is above.what's happened?

QueueMetrics:
That's related to Tomcat, one of the pre-built apps that ship with it. Nothing to worry about.

coolname:
i may found the problem
when i use ps -aux | grep java,i find three QM start process,when i use kill them all(kill -9), then i back to normal.

QueueMetrics:
Yes but the error above always shows. :) Nothing to worry about, as it is not in QM itself.

coolname:
 :)

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