java.lang.NoClassDefFoundError: jenkins/scm/api/SCMSourceObserver

Google Groups | Ashish Yadav | 8 months ago
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    Jenkins2.0 upgrade issue

    Google Groups | 8 months ago | Ashish Yadav
    java.lang.NoClassDefFoundError: jenkins/scm/api/SCMSourceObserver
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    Reported on IRC: {noformat}[2016-04-13 07:14:46] <benh57> rc1 update failed updating Multibranch [2016-04-13 07:14:47] <benh57> Pipeline: Multibranch [2016-04-13 07:14:47] <benh57> Failure - [2016-04-13 07:14:47] <benh57> java.lang.NoClassDefFoundError: jenkins/scm/api/SCMNavigatorDescriptor [2016-04-13 07:14:47] <benh57> at jenkins.branch.CustomOrganizationFolderDescriptor.doAddSpecificDesc [2016-04-13 07:15:47] <benh57> it seems to have actually installed fine though, looks normal after restart [2016-04-13 11:08:40] <@danielbeck> benh57_ Still around? If so, could you please explain what exactly was updated, and where you see the error message? [2016-04-13 20:54:23] <benh57_> danielbeck: that error message was on the initial plugin upgrade screen that appears when updating to 2.0rc1. [2016-04-13 20:55:05] <@danielbeck> benh57_ To clarify, are you upgrading or installing new? [2016-04-13 20:55:35] <benh57_> upgrading from 1.6something [2016-04-13 20:55:47] <benh57_> i clicked the 'click here to finish updating!' screen [2016-04-13 20:56:07] <benh57_> however, after jenkins restarted, the plugin appears to have updated fine [2016-04-13 20:56:31] <benh57_> i can check the log for the exact full details and email that to you [2016-04-13 20:59:29] <benh57_> there are various SCM-related exceptions in there actually [2016-04-13 20:59:51] <benh57_> 1) Error injecting constructor, java.lang.NoClassDefFoundError: jenkins/scm/api/SCMSourceObserver [2016-04-13 20:59:51] <benh57_> at jenkins.branch.OrganizationFolder$DescriptorImpl.<init>( [2016-04-13 21:00:11] <benh57_> Apr 13, 2016 5:13:52 AM hudson.ExtensionFinder$GuiceFinder$SezpozModule configure [2016-04-13 21:00:11] <benh57_> WARNING: Failed to load jenkins.branch.BranchProjectFactory$HeadByItemImpl [2016-04-13 21:00:11] <benh57_> java.lang.InstantiationException: java.lang.NoClassDefFoundError: jenkins/scm/api/SCMHead$HeadByItem {noformat} My guess: The old dependency system (JENKINS-21486 :-( ) does not take into account that dependencies may exist but be outdated when trying to dynamically load a plugin. In the case of an outdated SCM API plugin (judging from these messages), this results in exceptions upon Pipeline plugin installation.

    Jenkins JIRA | 1 year ago | Daniel Beck
    java.lang.NoClassDefFoundError: jenkins/scm/api/SCMSourceObserver

    Root Cause Analysis

    1. java.lang.NoClassDefFoundError


      at jenkins.branch.OrganizationFolder$DescriptorImpl.<init>()
    2. jenkins.branch
      1. jenkins.branch.OrganizationFolder$DescriptorImpl.<init>(
      1 frame