I received this stracktrace after installing Pipeline. I am on Jenkins 1.650
From log:
Mar 06, 2016 11:14:41 PM org.jvnet.hudson.annotation_indexer.Index$2$1 fetch
WARNING: Failed to load org.jenkinsci.plugins.workflow.cps.CpsFlowExecution
java.lang.NoClassDefFoundError: org/jenkinsci/plugins/workflow/flow/FlowExecution
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139)
at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:802)
at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)
at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)
at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at jenkins.ClassLoaderReflectionToolkit.invoke(ClassLoaderReflectionToolkit.java:44)
at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:86)
at hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:1209)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.jvnet.hudson.annotation_indexer.Index$2$1.fetch(Index.java:98)
at org.jvnet.hudson.annotation_indexer.Index$2$1.hasNext(Index.java:72)
at org.jvnet.hudson.annotation_indexer.SubtypeIterator.fetch(SubtypeIterator.java:18)
at org.jvnet.hudson.annotation_indexer.SubtypeIterator.hasNext(SubtypeIterator.java:28)
at hudson.init.TaskMethodFinder.discoverTasks(TaskMethodFinder.java:56)
at hudson.init.TerminatorFinder.discoverTasks(TerminatorFinder.java:8)
at hudson.init.TaskMethodFinder.discoverTasks(TaskMethodFinder.java:32)
at org.jvnet.hudson.reactor.Reactor.<init>(Reactor.java:151)
at org.jvnet.hudson.reactor.Reactor.<init>(Reactor.java:156)
at jenkins.model.Jenkins.cleanUp(Jenkins.java:2818)
at hudson.WebAppMain$3.run(WebAppMain.java:241)
Caused by: java.lang.ClassNotFoundException: org.jenkinsci.plugins.workflow.flow.FlowExecution
at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1376)
at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)
at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1079)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 26 more
In the browser:
hudson.util.HudsonFailedToLoad: org.jvnet.hudson.reactor.ReactorException: java.lang.Error: java.lang.reflect.InvocationTargetException
at hudson.WebAppMain$3.run(WebAppMain.java:237)
Caused by: org.jvnet.hudson.reactor.ReactorException: java.lang.Error: java.lang.reflect.InvocationTargetException
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:269)
at jenkins.InitReactorRunner.run(InitReactorRunner.java:44)
at jenkins.model.Jenkins.executeReactor(Jenkins.java:935)
at jenkins.model.Jenkins.<init>(Jenkins.java:816)
at hudson.model.Hudson.<init>(Hudson.java:83)
at hudson.model.Hudson.<init>(Hudson.java:79)
at hudson.WebAppMain$3.run(WebAppMain.java:225)
Caused by: java.lang.Error: java.lang.reflect.InvocationTargetException
at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:110)
at hudson.init.TaskMethodFinder$TaskImpl.run(TaskMethodFinder.java:176)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$8.runTask(Jenkins.java:924)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$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)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:106)
... 8 more
Caused by: java.lang.NullPointerException
at hudson.plugins.git.GitSCM.onLoaded(GitSCM.java:1659)
... 13 more
1. Manually remove the workflow packages from JENKINS_HOME/plugins 2. Upgrading all plugins. 3. Restarting jenkins. 4. Download the workflow plugins, and set to install on restart. 5. Then it was working fine.