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  1. Jenkins
  2. JENKINS-26677

Blacklist certain classes from loading in slaves

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    Description

      Classes from servlet container (such as HttpServletRequest) are not guaranteed to be remotable. For example, it could be because the container classloader hides the class file from RemoteClassLoader. Or it could be that the servlet container uses a newer versions of JDK than the slave JVM.

      Therefore, instead of letting these classes transferred to slave JVM, we should come up with a blacklist that causes the master to immediately refuse to send the class file image.

      That way, the tests we run can catch the problem, instead of leaving it up to a small number of unlucky users to discover them.

      This is expected to improve the "I got NoClassDefFoundError: class Xyz failed to load but I don't know why it failed to load" problem, which is hard to diagnose because the exception is missing the root cause.

      Attachments

        Issue Links

          is blocking

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-43314 external job monitoring missing class

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-46386 Agent sometimes fails to launch in custom cloud provider

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-62006 Getting java.lang.ClassNotFoundException: javax.servlet.ServletException while running hudson.util.ProcessTree.get()

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. JENKINS-38370 Identify APIs that are only intended for use from the Master JVM

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-26476 Remote FilePath.chmod fails with ClassNotFoundException: javax.servlet.ServletException

          • Major - Major loss of function.
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-35184 Failed to load jenkins.util.SystemProperties on slaves due to ServletContext

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-39669 Builds fail when loading jenkins.util.SystemProperties caused by java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-61787 jenkins.model.Jenkins loaded from parser callable via TestNameTransformer

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-40863 Shell task ClassNotFoundException: javax.servlet.ServletException

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-19453 Slave launcher fails after NoClassDefFoundError: Could not initialize class jenkins.model.Jenkins$MasterComputer

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. JENKINS-38371 Enforce @MasterJVMOnly annotation classes blacklist on agents when using hpi:run

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open
          links to

          Web Link PR 3778

          Activity

            Ascending order - Click to sort in descending order
            kohsuke Kohsuke Kawaguchi created issue -
            kohsuke Kohsuke Kawaguchi made changes -
            Field Original Value New Value
            Link This issue is related to JENKINS-26476 [ JENKINS-26476 ]
            jglick Jesse Glick made changes -
            Labels classloader robustness
            jglick Jesse Glick made changes -
            Priority Minor [ 4 ] Major [ 3 ]
            rtyler R. Tyler Croy made changes -
            Workflow JNJira [ 160752 ] JNJira + In-Review [ 180473 ]
            jglick Jesse Glick made changes -
            Link This issue relates to JENKINS-35184 [ JENKINS-35184 ]
            jglick Jesse Glick made changes -
            Link This issue is duplicated by JENKINS-38370 [ JENKINS-38370 ]
            robert Robert Klaus made changes -
            Link This issue relates to JENKINS-39669 [ JENKINS-39669 ]
            bitwiseman Liam Newman made changes -
            Link This issue relates to JENKINS-38371 [ JENKINS-38371 ]
            jglick Jesse Glick made changes -
            Link This issue is blocking JENKINS-43314 [ JENKINS-43314 ]
            jglick Jesse Glick made changes -
            Link This issue is blocking JENKINS-46386 [ JENKINS-46386 ]
            jglick Jesse Glick made changes -
            Link This issue relates to JENKINS-40863 [ JENKINS-40863 ]
            jglick Jesse Glick made changes -
            Remote Link This issue links to "PR 3778 (Web Link)" [ 22061 ]
            jglick Jesse Glick made changes -
            Link This issue relates to JENKINS-61787 [ JENKINS-61787 ]
            jglick Jesse Glick made changes -
            Link This issue relates to JENKINS-19453 [ JENKINS-19453 ]
            jglick Jesse Glick made changes -
            Link This issue is blocking JENKINS-62006 [ JENKINS-62006 ]

            People

              Unassigned Unassigned
              kohsuke Kohsuke Kawaguchi
              Votes:
              2 Vote for this issue
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              9 Start watching this issue

              Dates

                Created:
                Updated: