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  1. Jenkins
  2. JENKINS-65700

Random ConcurrentModificationException when checking out in parallel

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    Details

    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Component/s: workflow-cps-plugin
    • Labels:
      None
    • Environment:
    • Similar Issues:

      Description

      Every now and then we get the following exception:

      java.util.ConcurrentModificationException
      	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
      	at java.util.HashMap$EntryIterator.next(HashMap.java:1479)
      	at java.util.HashMap$EntryIterator.next(HashMap.java:1477)
      	at com.thoughtworks.xstream.converters.collections.MapConverter.marshal(MapConverter.java:75)
      	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
      	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
      	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)
      	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:87)
      	at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution$ConverterImpl.writeChild(CpsFlowExecution.java:1693)
      	at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution$ConverterImpl.marshal(CpsFlowExecution.java:1638)
      	at hudson.util.XStream2$AssociatedConverterImpl.marshal(XStream2.java:459)
      	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
      	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
      	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:83)
      	at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:275)
      	at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:262)
      Caused: java.lang.RuntimeException: Failed to serialize org.jenkinsci.plugins.workflow.job.WorkflowRun#execution for class org.jenkinsci.plugins.workflow.job.WorkflowRun
      	at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:266)
      	at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:233)
      	at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:150)
      	at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:219)
      	at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:158)
      	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
      	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
      	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)
      	at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)
      	at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)
      	at com.thoughtworks.xstream.XStream.marshal(XStream.java:1276)
      	at com.thoughtworks.xstream.XStream.marshal(XStream.java:1265)
      	at com.thoughtworks.xstream.XStream.toXML(XStream.java:1238)
      	at hudson.util.XStream2.toXMLUTF8(XStream2.java:312)
      	at org.jenkinsci.plugins.workflow.support.PipelineIOUtils.writeByXStream(PipelineIOUtils.java:34)
      	at org.jenkinsci.plugins.workflow.job.WorkflowRun.save(WorkflowRun.java:1210)
      	at hudson.util.PersistedList.onModified(PersistedList.java:182)
      	at hudson.util.PersistedList._onModified(PersistedList.java:212)
      	at hudson.util.PersistedList.add(PersistedList.java:80)
      	at org.jenkinsci.plugins.workflow.job.WorkflowRun.onCheckout(WorkflowRun.java:879)
      	at org.jenkinsci.plugins.workflow.job.WorkflowRun.access$1000(WorkflowRun.java:137)
      	at org.jenkinsci.plugins.workflow.job.WorkflowRun$SCMListenerImpl.onCheckout(WorkflowRun.java:1168)
      	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:150)
      	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:93)
      	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:80)
      	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
      	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
      	at java.lang.Thread.run(Thread.java:748)
      

      We have a job with 17 parallel (using matrix) stages, this happens now and then (a few times a week maybe).

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          patrik_sevallius Patrik added a comment -

          I upgraded all plugins, still get the same problem randomly.

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          patrik_sevallius Patrik added a comment - I upgraded all plugins, still get the same problem randomly.

            People

            Assignee:
            Unassigned Unassigned
            Reporter:
            patrik_sevallius Patrik
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              Dates

              Created:
              Updated: