Issue

• I am receiving the error:

Exception in thread "THREADNAME" java.lang.ClassCircularityError: java/util/logging/LogRecord 
at net.bull.javamelody.LoggingHandler.publish(LoggingHandler.java:109) 
at java.util.logging.Logger.log(Logger.java:738) 
at java.util.logging.Logger.doLog(Logger.java:765) 
at java.util.logging.Logger.log(Logger.java:875) 
at jenkins.InitReactorRunner$1.onTaskFailed(InitReactorRunner.java:71) 
at org.jvnet.hudson.reactor.ReactorListener$Aggregator.onTaskFailed(ReactorListener.java:99) 
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214) 
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) 
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) 
Exception in thread "RequestHandlerThread[#6]" java.lang.ClassCircularityError: java/util/logging/LogRecord 
at net.bull.javamelody.LoggingHandler.publish(LoggingHandler.java:109) 
at java.util.logging.Logger.log(Logger.java:738) 
at java.util.logging.Logger.doLog(Logger.java:765)

Environment

• CloudBees Jenkins Enterprise
• Monitoring plugin

Resolution

Please disable the monitoring plugin:

touch $JENKINS_HOME/plugins/monitoring.jpi.disabled

and restart your Jenkins master.