InstanceAlreadyExistsException

oldforum

• July 16, 2007 00:00

• Answered

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when i use the same jave program to construct and run multiple graphs i get the following error:

INFO [WatchDog] - Thread started.
INFO [WatchDog] - Running on 2 CPU(s) max available memory for JVM 65088 KB

javax.management.InstanceAlreadyExistsException: org.jetel.graph.runtime:type=CloverJMX
at com.sun.jmx.mbeanserver.Repository.addMBean(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(Unknown Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(Unknown Source)
at org.jetel.graph.runtime.WatchDog.registerTrackingMBean(WatchDog.java:193)INFO [WatchDog] - [Clover] Initializing phase: 1

DEBUG [WatchDog] - initializing edges:

all of the graphs, if built correctly, executes successfully

• 

  oldforum

  • July 16, 2007 08:23

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  Thanks for report Nathan, we will fix this bug in next release.
  
  Martin
• 

  elouan

  • December 20, 2007 14:45

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  Is there a solution found since this time ? because I've the same error without the aborting of the graph.
• 

  dpavlis

  • December 26, 2007 19:04

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  Well, this should have been fixed already.
  
  I assume you are running two instances of graph at the same time. Clover uses graph's name to register JMXBean which then can be used for querying various aspects of graph's runtime.
  
  If you choose two different names for your graphs, it should work ok.
  
  The other option is to run Clover without JMX - option -noJMX for the runGraph command line utility
• 

  elouan

  • January 04, 2008 10:44

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  Thank you for your answer

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