Jenkins is not loading: java.lang.ClassCastException: class java.lang.Integer cannot be cast to class hudson.slaves.NodeProperty during upgrade from LTS 2.346.x to 2.361.1

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    • Type: Bug
    • Resolution: Incomplete
    • Priority: Blocker
    • Component/s: core
    • Environment:
      Docker Image: jenkins/jenkins:lts-jdk11

      I upgraded from 2.346.3 to 2.361.1 and now Jenkins is not loading with the following error:

      java.lang.ClassCastException: class java.lang.Integer cannot be cast to class hudson.slaves.NodeProperty (java.lang.Integer is in module java.base of loader 'bootstrap'; hudson.slaves.NodeProperty is in unnamed module of loader org.eclipse.jetty.webapp.WebAppClassLoader @485a3466)
	at hudson.model.Node.getNodeProperty(Node.java:496)
	at org.jenkinsci.plugins.matrixauth.AmbiguityMonitor$NodeContributor.record(AmbiguityMonitor.java:135)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
	at org.jenkinsci.plugins.matrixauth.AmbiguityMonitor.recordAgents(AmbiguityMonitor.java:269)
Caused: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:109)
Caused: java.lang.Error
	at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:115)
	at hudson.init.TaskMethodFinder$TaskImpl.run(TaskMethodFinder.java:185)
	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:305)
	at jenkins.model.Jenkins$5.runTask(Jenkins.java:1160)
	at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:222)
	at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:121)
	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:70)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
Caused: org.jvnet.hudson.reactor.ReactorException
	at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:291)
	at jenkins.InitReactorRunner.run(InitReactorRunner.java:49)
	at jenkins.model.Jenkins.executeReactor(Jenkins.java:1195)
	at jenkins.model.Jenkins.<init>(Jenkins.java:985)
	at hudson.model.Hudson.<init>(Hudson.java:86)
	at hudson.model.Hudson.<init>(Hudson.java:82)
	at hudson.WebAppMain$3.run(WebAppMain.java:247)
Caused: hudson.util.HudsonFailedToLoad
	at hudson.WebAppMain$3.run(WebAppMain.java:264)

      Thanks for the help.

            Assignee:
            Unassigned
            Reporter:
            Jonah Kemuel
            Archiver:
            Jenkins Service Account

              Created:
              Updated:
              Resolved:
              Archived: