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http://issues.apache.org/bugzilla/show_bug.cgi?id=38234

           Summary: Using Graph Results ends up ArithmeticException
           Product: JMeter
           Version: 2.1.1
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Main
        AssignedTo: [email protected]
        ReportedBy: [EMAIL PROTECTED]
                CC: [EMAIL PROTECTED]


Using Graph Results ends up ArithmeticException.

I invoked JMeter and added a Thread Group.
Then I attached "Http Request Defaults", "HTTP Request" and
"Graph Results". I executed the test once. It worked successfully
(It's natural, for it's introduced in the tutorial.).

However, when (A) I remove the Graph Results component and attach
a Graph Results component again and execute the test, it fails
saying "Exception in thread "AWT-EventQueue-0" java.lang.ArithmeticException: / 
by zero
     at org.apache.jmeter.visualizers.Graph.drawSample(Graph.java:209)
     at org.apache.jmeter.visualizers.Graph.paintComponent(Graph.java:199)
   etc, etc..

Note that it occurs when I iterate (A) procedure three or four (it varies.
I don't know why) times.

Exception above took place when I tried to access a Tomcat example webapp.
So, all parameters set for components are : 
     "localhost" to [Http Request Defaults] -> [Server Name or IP]
     "8080" to [Http Request Defaults] -> [Port Number]
     "/servlets-example/servlet/HelloWorldExample" to [HTTP Request] -> [Path:]

  Once a crush set off, JMeter dumps ArithmeticException every time you click
on Graph Results component. It's possible, but irretating to remove the
malfunctioned component as it dumps a lot of messages and gets heavy making
manipulation annoying.
  Moreover, you can't escape from the curse of the component. Even if you
remove the malfunctioned Graph Results component, you will see the same
phenomenon when you attach a new Graph Results component to Thread Group.
  
  For the reason of cursing, I think this bug has to be redeemed.


#The bug resides in the latest nightly build (20060112) too.

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