Uploaded image for project: 'Jenkins'
  1. Jenkins
  2. JENKINS-61105

2.204.3 rc fails to open folder in Java 8, throws class not found exception



    • Bug
    • Resolution: Fixed
    • Blocker
    • core
    • Jenkins 2.204.3 release candidate as included in my docker-lfs image on the lts-with-plugins-rc branch
      Running Java 8 shows the failure.
      Running Java 11 does not show the failure.
    • Jenkins 2.227


      Jenkins 2.204.3 release candidate build fails to open one or more folders in my test docker image when run with Java 8. It reports MethodNotFoundException for a CharBuffer rewind() method. It does not report that error when run with Java 11. Jenkins 2.220 does not report that error. Jenkins 2.204.2 does not report that error.

      The manifest included in the 2.204.3 rc jenkins.war file is:

      Manifest-Version: 1.0
      Build-Jdk-Spec: 11
      Created-By: Maven Archiver 3.4.0
      Hudson-Version: 1.395
      Implementation-Version: 2.204.3-SNAPSHOT
      Jenkins-Version: 2.204.3-SNAPSHOT
      Main-Class: Main
      Remoting-Embedded-Version: 3.36.1
      Remoting-Minimum-Supported-Version: 3.14

      The manifest included in the 2.204.2 jenkins.war file is:

      Manifest-Version: 1.0
      Build-Jdk-Spec: 1.8
      Created-By: Maven Archiver 3.4.0
      Hudson-Version: 1.395
      Implementation-Version: 2.204.2
      Jenkins-Version: 2.204.2
      Main-Class: Main
      Remoting-Embedded-Version: 3.36.1
      Remoting-Minimum-Supported-Version: 3.14

      Notice the difference in Build-Jdk-Spec.

      See the google groups message for the detailed analysis.

      1. Install git large file support on your Linux computer (or download from git-lfs.github.com)
      2. Iniitalize git lfs with
        $ git lfs install
        Git LFS initialized.
      3. Clone my docker-lfs repository
        $ git clone https://github.com/MarkEWaite/docker-lfs
        Cloning into 'docker-lfs'...
        Resolving deltas: 100% (12717/12717), done.
      4. Change to the docker-lfs directory
        $ cd docker-lfs
      5. Checkout the lts-with-plugins-rc branch
        $ git checkout -b lts-with-plugins-rc -t origin/lts-with-plugins-rc
        Filtering content: 100% (190/190), 244.87 MiB | 5.36 MiB/s, done.
        Branch 'lts-with-plugins-rc' set up to track remote branch 'lts-with-plugins-rc' from 'origin'.
        Switched to a new branch 'lts-with-plugins-rc'
      6. Build the docker image
        $ docker build -f Dockerfile -t markewaite/lts-rc:2.204.3 .
      7. Run the docker image
        $ docker run --rm -i -e JENKINS_ADVERTISED_HOSTNAME=`hostname` \
        -e START_QUIET=True -p 8080:8080 -t markewaite/lts-rc:2.204.3
      8. Connect to the running image with a web browser
        $ python -m webbrowser http://$(hostname):8080/
      9. Open each of the folders at the root of that Jenkins server. One of them will fail to an Oops screen (at least does on the 3 machines where I've tested)

      Some of the folders fail to open when I click them and I receive the following stack track in an "Oops" page on one instance:

      org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-2.204.3-SNAPSHOT.jar!/hudson/model/View/index.jelly:42:43: <st:include> org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-2.204.3-SNAPSHOT.jar!/lib/hudson/projectView.jelly:84:48: <j:forEach> java.nio.CharBuffer.rewind()Ljava/nio/CharBuffer;
      	at org.apache.commons.jelly.impl.TagScript.handleException(TagScript.java:726)
      	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:281)

      In the other test instance, the message appears in the console log and does not appear in the Jenkins Oops page. In the console log, it reports:

      2020-02-15 16:37:04.540+0000 [id=164374]        INFO    j.b.MultiBranchProject$BranchIndexing#run: Bugs-Pipeline-Checks/jenkins-bugs-multibranch-pipeline-bitbucket #20200215.093700 branch indexing action completed: SUCCESS in 3.6 sec
      2020-02-15 16:39:26.329+0000 [id=39]    SEVERE  hudson.triggers.SafeTimerTask#run: Timer task com.cloudbees.jenkins.Cleaner@7ed56677 failed
      java.lang.NoSuchMethodError: java.nio.CharBuffer.rewind()Ljava/nio/CharBuffer;
              at hudson.Util.rawEncode(Util.java:886)
              at hudson.model.AbstractItem.getShortUrl(AbstractItem.java:576)
              at hudson.model.AbstractItem.getUrl(AbstractItem.java:537)

      I don't know why there is a difference in behavior. I don't know if the issue is related to something in my local environment, the Docker image definition that I'm using, or something completely different.

      The folders which fail to open are different in the two instances, but the stack traces seem to consistently be associated with CharBuffer.rewind().

      Later in the stack trace, it reports:

      Caused by: java.lang.NoSuchMethodError: java.nio.CharBuffer.rewind()Ljava/nio/CharBuffer;
      	at hudson.Util.rawEncode(Util.java:886)




            olivergondza Oliver Gond┼ża
            markewaite Mark Waite
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