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Posted to dev@tomcat.apache.org by bu...@apache.org on 2006/06/29 17:37:16 UTC
DO NOT REPLY [Bug 39933] New: - Divide by zero exception when viewing ClusterReceiver with JMX
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Summary: Divide by zero exception when viewing ClusterReceiver
with JMX
Product: Tomcat 5
Version: 5.5.12
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina:Cluster
AssignedTo: tomcat-dev@jakarta.apache.org
ReportedBy: mdabbs@vibephone.com
While troubleshooting a clustering issue, I installed JMX (for JDK 1.4) as per
the instructions at http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html
to be able to monitor the activity. When clicking on the link for
Catalina:type=ClusterReceiver,host=localhost I was getting a Divide by Zero
exception in the catalina.out log. The message was:
catalina.out:javax.management.RuntimeOperationsException: Exception invoking
method avgTotalReceivedBytes nested runtime exception is
java.lang.ArithmeticException: / by zero
Presumably this was because no traffic had been received yet. Once I got
clustering working, and traffic was being sent/received, I no longer received
this error.
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DO NOT REPLY [Bug 39933] - Divide by zero exception when viewing ClusterReceiver with JMX
Posted by bu...@apache.org.
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RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=39933>.
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------- Additional Comments From rainer.jung@kippdata.de 2006-06-29 16:02 -------
Do you have a stack?
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DO NOT REPLY [Bug 39933] - Divide by zero exception when viewing ClusterReceiver with JMX
Posted by bu...@apache.org.
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG�
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=39933>.
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------- Additional Comments From mdabbs@vibephone.com 2006-06-29 16:04 -------
javax.management.RuntimeOperationsException: Exception invoking method
avgTotalReceivedBytes nested runtime exception is java.lang.ArithmeticException:
/ by zero
java.lang.ArithmeticException: / by zero
at
org.apache.catalina.cluster.tcp.ClusterReceiverBase.getAvgTotalReceivedBytes(ClusterReceiverBase.java:271)
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:324)
at
org.apache.commons.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:346)
at
mx4j.server.interceptor.InvokerMBeanServerInterceptor.getAttribute(InvokerMBeanServerInterceptor.java:248)
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:135)
at
mx4j.server.interceptor.SecurityMBeanServerInterceptor.getAttribute(SecurityMBeanServerInterceptor.java:106)
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:135)
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:135)
at
mx4j.server.interceptor.ContextClassLoaderMBeanServerInterceptor.getAttribute(ContextClassLoaderMBeanServerInterceptor.java:269)
at mx4j.server.MX4JMBeanServer.getAttribute(MX4JMBeanServer.java:965)
at
mx4j.tools.adaptor.http.MBeanCommandProcessor.createMBeanElement(MBeanCommandProcessor.java:119)
at
mx4j.tools.adaptor.http.MBeanCommandProcessor.executeRequest(MBeanCommandProcessor.java:56)
at mx4j.tools.adaptor.http.HttpAdaptor$HttpClient.run(HttpAdaptor.java:980)
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DO NOT REPLY [Bug 39933] - Divide by zero exception when viewing ClusterReceiver with JMX
Posted by bu...@apache.org.
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG�
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=39933>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND�
INSERTED IN THE BUG DATABASE.
http://issues.apache.org/bugzilla/show_bug.cgi?id=39933
rainer.jung@kippdata.de changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
------- Additional Comments From rainer.jung@kippdata.de 2006-06-29 20:55 -------
Fixed in subversion HEAD of tc5.5.x.
I searched the whole cluster module and fixed all similar places.
Your analysis was correct, thanks for reporting this!
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