Hi, We run Jenkins 1.532.1 in some environments, and have recently come across an issue with SimpleBuildStep not being found as a valid class. This generates a lovely stack trace (as below) and linked jobs then fail.
FATAL: jenkins/tasks/SimpleBuildStep java.lang.NoClassDefFoundError: jenkins/tasks/SimpleBuildStep at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1138) at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:695) at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1309) at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1365) at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1325) at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at jenkins.ClassLoaderReflectionToolkit.invoke(ClassLoaderReflectionToolkit.java:44) at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:86) at hudson.ClassicPluginStrategy$DependencyClassLoader.findClass(ClassicPluginStrategy.java:572) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at jenkins.util.AntClassLoader.findBaseClass(AntClassLoader.java:1397) at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1074) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:191) at hudson.plugins.git.GitChangeSet.hasHudsonTasksMailer(GitChangeSet.java:293) at hudson.plugins.git.GitChangeSet.findOrCreateUser(GitChangeSet.java:271) at hudson.plugins.git.GitChangeSet.getAuthor(GitChangeSet.java:326) at hudson.model.AbstractBuild.getCulprits(AbstractBuild.java:414) at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:729) at hudson.model.Run.execute(Run.java:1709) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:88) at hudson.model.Executor.run(Executor.java:231) Caused by: java.lang.ClassNotFoundException: jenkins.tasks.SimpleBuildStep at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1375) at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1325) at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1078) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) I thought an unattended-upgrade of the JVM might have caused this, but I can't see anything in the logs that would suggest that Java has been upgraded recently. This used to work absolutely fine, and now it doesn't - hence we're hesitant to upgrade right now to resolve this issue. Does anyone have any ideas? :) Let me know if you need any further details. Thanks, Andrew -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/54c4056d-5586-4a06-bcaa-1c52001b46fe%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
