The only support contract I have is myself and my groovy script console :) What baffles me is that the uberClassLoader can load the class, but the build fails to.
Robert Sandell Sony Mobile Communications Tel: +46 10 80 12721 sonymobile.com<http://sonymobile.com/> From: [email protected] [mailto:[email protected]] On Behalf Of Stephen Connolly Sent: den 7 april 2014 17:05 To: [email protected] Subject: Re: Classloading issues between git and git-client plugins?! I have nothing jumping to mind... this looks like something to do with remoting though... in other words the class is failing to load on the remote classloader not Jenkins core's classloader itself.... which probably points to Kohsuke as the best placed to comment. Robert, you could always open a support ticket if you have a support contract with somebody... ;-) On 7 April 2014 15:57, Mark Waite <[email protected]<mailto:[email protected]>> wrote: Unfortunately, I don't have any reasonable suggestions for further techniques to debug the classloading issue. I am hopeful that Kohsuke or Jesse or Stephen have suggestions, since I think classloading is handled deep in core, well below the layers of my comfort. As far as I know, most of the jar file dependencies are "up to date" in the git-client-plugin pom.xml and the git-plugin pom.xml. There are two dependencies intentionally pointed at older versions. The "guava" dependency is kept at 11.0.01 because Jenkins core keeps its version at 11.0.1. The multiple-scms dependency is kept at 0.2 because there is a known problem with the multiple-scms plugin 0.3. Do you have the multiple SCMs plugin installed? Is it enabled? Are you using it? Mark Waite Mark Waite On Mon, Apr 7, 2014 at 8:44 AM, Sandell, Robert <[email protected]<mailto:[email protected]>> wrote: Yes those look like similar issues. Any thoughts on how I can continue to debug the issue? Few jobs on the currently affected masters use the git plugin, so I can keep them alive for a little bit more before I need to take drastic measures. Robert Sandell Sony Mobile Communications Tel: +46 10 80 12721<tel:%2B46%2010%2080%2012721> sonymobile.com<http://sonymobile.com/> From: [email protected]<mailto:[email protected]> [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Mark Waite Sent: den 4 april 2014 04:38 To: [email protected]<mailto:[email protected]> Subject: Re: Classloading issues between git and git-client plugins?! In case it helps, https://issues.jenkins-ci.org/browse/JENKINS-21520 reports something similar, though the investigation there has not shown any way to repeat the bug. Likewise https://issues.jenkins-ci.org/browse/JENKINS-20254 seems to be in a similar area. On Thu, Apr 3, 2014 at 9:19 AM, Mark Waite <[email protected]<mailto:[email protected]>> wrote: It's the credentials plugin installed, and current, and enabled? There have been other reports of a class loader failure, but we have not been able to duplicate them. On Apr 3, 2014 9:00 AM, "Sandell, Robert" <[email protected]<mailto:[email protected]>> wrote: Onto my next post LTS upgrade problem. Suddenly we see this stacktrace in build logs when the git plugin is fetching from the repository. Caused by: java.lang.NoClassDefFoundError: org.jenkinsci.plugins.gitclient.GitClient at java.lang.Class.getDeclaredFields0(Native Method) at java.lang.Class.privateGetDeclaredFields(Class.java:2397) at java.lang.Class.getDeclaredField(Class.java:1946) at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1659) at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:72) at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:480) at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:468) at java.security.AccessController.doPrivileged(Native Method) at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:468) at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:365) at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:602) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1622) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370) at hudson.remoting.UserRequest.deserialize(UserRequest.java:182) at hudson.remoting.UserResponse.retrieve(UserRequest.java:211) at hudson.remoting.Channel.call(Channel.java:723) A similar stacktrace if we try to run the build on the master instead. We got this problem at one time when we first upgraded (everything), my first guess was that it was because of some library changes in git-client so we cleaned up some old hpi and jpi files and installed the previous micro version of git and git client, started Jenkins and it worked again. The other servers didn't have the problem when we upgraded them. But suddenly yesterday it happened in runtime. On Monday the git plugin worked and on Tuesday it didn't. I've tried some Groovy debugging with the following script: def gitClient = Jenkins.instance.pluginManager.getPlugin("git-client") println(gitClient.classLoader.findLoadedClass("org.jenkinsci.plugins.gitclient.GitClient")) //output: interface org.jenkinsci.plugins.gitclient.GitClient println(Jenkins.instance.pluginManager.uberClassLoader.findClass("org.jenkinsci.plugins.gitclient.GitClient")) //output: interface org.jenkinsci.plugins.gitclient.GitClient def gitPlugin = Jenkins.instance.pluginManager.getPlugin("git") println(gitPlugin.classLoader.findLoadedClass("hudson.plugins.git.GitSCM")) //output: class hudson.plugins.git.GitSCM println(Jenkins.instance.pluginManager.uberClassLoader.findClass("hudson.plugins.git.GitSCM")) //output: class hudson.plugins.git.GitSCM println(gitPlugin.classLoader.findLoadedClass("org.jenkinsci.plugins.gitclient.GitClient")) //output: interface org.jenkinsci.plugins.gitclient.GitClient def job = Jenkins.instance.getItem("Tools_GerritTester") println(job.getClass().getClassLoader().findLoadedClass("org.jenkinsci.plugins.gitclient.GitClient")) //output: null println(job.getClass().getClassLoader().findLoadedClass("hudson.plugins.git.GitSCM")) //output: null println(job.getScm().getClass().getClassLoader().findLoadedClass("org.jenkinsci.plugins.gitclient.GitClient")) //output: interface org.jenkinsci.plugins.gitclient.GitClient The output is the same whether I run it on a master with the problem or one that doesn't have it. Are there any other classloading scenarios that I've missed, or something else I can try to find the issue? I'd prefer to not just reboot and forget about it ;) Robert Sandell Staff Engineer Development Environment Software Environment and Product Configuration Sony Mobile Communications Tel: +46 10 80 12721<tel:%2B46%2010%2080%2012721> [email protected]<mailto:[email protected]> sonymobile.com<http://sonymobile.com/> [cid:[email protected]] -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- Thanks! Mark Waite -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- Thanks! Mark Waite -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
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