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  1. Jenkins
  2. JENKINS-51179

Pipeline dies with `java.lang.String cannot be cast to hudson.model.Fingerprint`

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      All builds that I checked fail with following stack :

      java.lang.ClassCastException: java.lang.String cannot be cast to hudson.model.Fingerprint
       at hudson.model.Fingerprint.load(Fingerprint.java:1369)
       at hudson.model.Fingerprint.load(Fingerprint.java:1357)
       at hudson.model.FingerprintMap.load(FingerprintMap.java:97)
       at hudson.model.FingerprintMap.load(FingerprintMap.java:47)
       at hudson.util.KeyedDataStorage.get(KeyedDataStorage.java:161)
       at hudson.model.FingerprintMap.get(FingerprintMap.java:82)
       at hudson.model.FingerprintMap.get(FingerprintMap.java:47)
       at hudson.util.KeyedDataStorage.getOrCreate(KeyedDataStorage.java:111)
       at hudson.model.FingerprintMap.getOrCreate(FingerprintMap.java:68)
       at hudson.model.FingerprintMap.getOrCreate(FingerprintMap.java:64)
       at com.cloudbees.plugins.credentials.CredentialsProvider.getOrCreateFingerprintOf(CredentialsProvider.java:1403)
       at com.cloudbees.plugins.credentials.CredentialsProvider.trackAll(CredentialsProvider.java:1457)
       at com.cloudbees.plugins.credentials.CredentialsProvider.track(CredentialsProvider.java:1421)
       at hudson.plugins.git.GitSCM.createClient(GitSCM.java:818)
       at hudson.plugins.git.GitSCM.createClient(GitSCM.java:786)
       at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1154)
       at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:113)
       at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:144)
       at org.jenkinsci.plugins.workflow.multibranch.SCMBinder.create(SCMBinder.java:120)
       at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:298)
       at hudson.model.ResourceController.execute(ResourceController.java:97)
       at hudson.model.Executor.run(Executor.java:429)
       Finished: FAILURE

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            oleg_nenashev Oleg Nenashev added a comment -

            Likely the Fingerprint file is corrupted (or uses wrong XML notation)
            Please provide...

            • Version of Jenkins
            • Failing fingerprint file if you can determine it (probably not)

            The error does not get propagated correctly in the code, and the unchecked cast is a bad idea. It needs some polishing at least.

            JENKINS-49588 may be related

            Show
            oleg_nenashev Oleg Nenashev added a comment - Likely the Fingerprint file is corrupted (or uses wrong XML notation) Please provide... Version of Jenkins Failing fingerprint file if you can determine it (probably not) The error does not get propagated correctly in the code, and the unchecked cast is a bad idea. It needs some polishing at least. JENKINS-49588 may be related
            Hide
            olira Oliver Rau added a comment -

            Hi Oleg,

            we are seeing the same issue at the moment.
            Jenkins Version is 2.112

            I assume that in our case this has happened after the disk being full and Jenkins getting into an inconsistent state. Jenkins was still working but wasn't accepting webhook builds anymore. After freeing up some space, It started accepting webhooks again but is now failing with the above exception.

            Is there any way to get it valid again without restarting Jenkins?

            Show
            olira Oliver Rau added a comment - Hi Oleg, we are seeing the same issue at the moment. Jenkins Version is 2.112 I assume that in our case this has happened after the disk being full and Jenkins getting into an inconsistent state. Jenkins was still working but wasn't accepting webhook builds anymore. After freeing up some space, It started accepting webhooks again but is now failing with the above exception. Is there any way to get it valid again without restarting Jenkins?
            Hide
            oleg_nenashev Oleg Nenashev added a comment -

            According to the current stacktrace, you "just" need to find corrupted Fingerprint files and delete/move/fix them. The file is not loaded into the memory, so there should be no need in restart once the file is fixed somehow. If you delete it, a new file will be just created. You will lose track of credentials usage, but it should be flawless in other terms

            Show
            oleg_nenashev Oleg Nenashev added a comment - According to the current stacktrace, you "just" need to find corrupted Fingerprint files and delete/move/fix them. The file is not loaded into the memory, so there should be no need in restart once the file is fixed somehow. If you delete it, a new file will be just created. You will lose track of credentials usage, but it should be flawless in other terms
            Hide
            olira Oliver Rau added a comment -

            Hi Oleg,

            Thanks for the reply. Here is what I've done to find existing files that are corrupted:

            grep -rL "</fingerprint>" $JENKINS_HOME/fingerprints

            I found two files, one of them empty, the other one indeed corrupted (not written to the end), so I deleted both. This didn't solve the issue.

            I restarted Jenkins, still no luck.

            Then I was digging down into where exactly the issue was occurring. I found that multiple withCredential blocks with different credentials were failing with above exception. As  I didn't know where else the fingerprint could be stored I simply updated that credentials and now builds are working again.

            Show
            olira Oliver Rau added a comment - Hi Oleg, Thanks for the reply. Here is what I've done to find existing files that are corrupted: grep -rL  "</fingerprint>" $JENKINS_HOME/fingerprints I found two files, one of them empty, the other one indeed corrupted (not written to the end), so I deleted both. This didn't solve the issue. I restarted Jenkins, still no luck. Then I was digging down into where exactly the issue was occurring. I found that multiple withCredential blocks with different credentials were failing with above exception. As  I didn't know where else the fingerprint could be stored I simply updated that credentials and now builds are working again.
            Hide
            oleg_nenashev Oleg Nenashev added a comment -

            I am still not sure what causes it in your case, but I have created https://github.com/jenkinsci/jenkins/pull/3439 which improves diagnostics and propagates proper errors to the Fingerprint loading engine. At least users will see which file causes issues

            Show
            oleg_nenashev Oleg Nenashev added a comment - I am still not sure what causes it in your case, but I have created https://github.com/jenkinsci/jenkins/pull/3439 which improves diagnostics and propagates proper errors to the Fingerprint loading engine. At least users will see which file causes issues
            Hide
            scm_issue_link SCM/JIRA link daemon added a comment -

            Code changed in jenkins
            User: Oleg Nenashev
            Path:
            test/src/test/java/hudson/model/FingerprintTest.java
            http://jenkins-ci.org/commit/jenkins/cc9425039aa2f8f46153e404c226cf98b0e65659
            Log:
            JENKINS-51179 - Reproduce the issue in Test

            Show
            scm_issue_link SCM/JIRA link daemon added a comment - Code changed in jenkins User: Oleg Nenashev Path: test/src/test/java/hudson/model/FingerprintTest.java http://jenkins-ci.org/commit/jenkins/cc9425039aa2f8f46153e404c226cf98b0e65659 Log: JENKINS-51179 - Reproduce the issue in Test
            Hide
            scm_issue_link SCM/JIRA link daemon added a comment -

            Code changed in jenkins
            User: Oleg Nenashev
            Path:
            core/src/main/java/hudson/model/Fingerprint.java
            http://jenkins-ci.org/commit/jenkins/922617509eccbcb89ad3bb8b5f6e33bd5a8182c0
            Log:
            JENKINS-51179 - Check type of the loaded object when loading fingerprints

            Show
            scm_issue_link SCM/JIRA link daemon added a comment - Code changed in jenkins User: Oleg Nenashev Path: core/src/main/java/hudson/model/Fingerprint.java http://jenkins-ci.org/commit/jenkins/922617509eccbcb89ad3bb8b5f6e33bd5a8182c0 Log: JENKINS-51179 - Check type of the loaded object when loading fingerprints
            Hide
            scm_issue_link SCM/JIRA link daemon added a comment -

            Code changed in jenkins
            User: Oleg Nenashev
            Path:
            core/src/main/java/hudson/model/Fingerprint.java
            test/src/test/java/hudson/model/FingerprintTest.java
            http://jenkins-ci.org/commit/jenkins/9e64bcdcb4a2cf12d59dfa334e09ffb448d361e9
            Log:
            Merge pull request #3439 from oleg-nenashev/bug/JENKINS-51179

            JENKINS-51179 - Provide diagnostics when loading corrupted fingerprint files

            Compare: https://github.com/jenkinsci/jenkins/compare/cdda62c35a86...9e64bcdcb4a2
            *NOTE:* This service been marked for deprecation: https://developer.github.com/changes/2018-04-25-github-services-deprecation/

            Functionality will be removed from GitHub.com on January 31st, 2019.

            Show
            scm_issue_link SCM/JIRA link daemon added a comment - Code changed in jenkins User: Oleg Nenashev Path: core/src/main/java/hudson/model/Fingerprint.java test/src/test/java/hudson/model/FingerprintTest.java http://jenkins-ci.org/commit/jenkins/9e64bcdcb4a2cf12d59dfa334e09ffb448d361e9 Log: Merge pull request #3439 from oleg-nenashev/bug/ JENKINS-51179 JENKINS-51179 - Provide diagnostics when loading corrupted fingerprint files Compare: https://github.com/jenkinsci/jenkins/compare/cdda62c35a86...9e64bcdcb4a2 * NOTE: * This service been marked for deprecation: https://developer.github.com/changes/2018-04-25-github-services-deprecation/ Functionality will be removed from GitHub.com on January 31st, 2019.
            Hide
            oleg_nenashev Oleg Nenashev added a comment -

            Fixed in 2.123

            Show
            oleg_nenashev Oleg Nenashev added a comment - Fixed in 2.123
            Hide
            jozue_noon Witold Konior added a comment -

            Thank you!

            Show
            jozue_noon Witold Konior added a comment - Thank you!

              People

              Assignee:
              oleg_nenashev Oleg Nenashev
              Reporter:
              jozue_noon Witold Konior
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              Watchers:
              4 Start watching this issue

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                Created:
                Updated:
                Resolved: