ConcurrentModificationException in AWS Codebuild plugin

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ConcurrentModificationException in AWS Codebuild plugin

Vedarth Kulkarni
Hi,

I am using:

Jenkins: 2.89.3
AWS Codebuild plugin: com.amazonaws:aws-codebuild:0.17 (maven ID)
Pipeline plugin: org.jenkins-ci.plugins.workflow:workflow-aggregator:2.5 (maven ID)

And I have a multibranch pipeline with Jenkinsfile which looks something like this:

pipeline {
    agent { label 'master' }

    stages {
        stage('Checkout') {
            steps {
                checkout scm
            }
        }
        stage('Test Run') {
            failFast true
            parallel {
                stage('Test Run 1') {
                    steps {
                        timestamps {
                            withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: 'aws']]) {
                                awsCodeBuild credentialsId: 'CodeBuild', credentialsType: 'jenkins', projectName: 'Proj1', region: 'us-east-1', sourceControlType: 'project', sourceVersion: "${env.GIT_COMMIT}"
                            }
                        }
                    }
                }
                stage('Test Run 2') {
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: 'aws']]) {
                            awsCodeBuild credentialsId: 'CodeBuild', credentialsType: 'jenkins', projectName: 'Proj2', region: 'us-east-1', sourceControlType: 'project', sourceVersion: "${env.GIT_COMMIT}"
                        }
                    }
                }
                stage('Test Run 3') {
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: 'aws']]) {
                            awsCodeBuild credentialsId: 'CodeBuild', credentialsType: 'jenkins', projectName: 'Proj3', region: 'us-east-1', sourceControlType: 'project', sourceVersion: "${env.GIT_COMMIT}", envVariables: "[{VAR, value1}]"
                        }
                    }
                }
                stage('Test Run 4') {
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: 'aws']]) {
                            awsCodeBuild credentialsId: 'CodeBuild', credentialsType: 'jenkins', projectName: 'Proj3', region: 'us-east-1', sourceControlType: 'project', sourceVersion: "${env.GIT_COMMIT}", envVariables: "[{VAR, value2}]"
                        }
                    }
                }
                stage('Test Run 5') {
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: 'aws']]) {
                            awsCodeBuild credentialsId: 'CodeBuild', credentialsType: 'jenkins', projectName: 'Proj3', region: 'us-east-1', sourceControlType: 'project', sourceVersion: "${env.GIT_COMMIT}", envVariables: "[{VAR, value3}]"
                        }
                    }
                }
                stage('Test Run 6') {
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: 'aws']]) {
                            awsCodeBuild credentialsId: 'CodeBuild', credentialsType: 'jenkins', projectName: 'Proj3', region: 'us-east-1', sourceControlType: 'project', sourceVersion: "${env.GIT_COMMIT}", envVariables: "[{VAR, value4}]"
                        }
                    }
                }
            }
        }
    }
}



in stages `Test Run 3` to `Test Run 6` I am using same Codebuild project but with different environment variable values which execute different scripts in the build
When I am running the job with above pipeline I am getting following exception:

java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:907)
at java.util.ArrayList$Itr.next(ArrayList.java:857)
at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:73)
at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)
at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)
Caused: java.lang.RuntimeException: Failed to serialize CodeBuildAction#logs for class CodeBuildAction
at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)
at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)
at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)
at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)
at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
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:88)
at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64)
at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:74)
at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)
at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)
Caused: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class org.jenkinsci.plugins.workflow.job.WorkflowRun
at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)
at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)
at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)
at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)
at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
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:1026)
at com.thoughtworks.xstream.XStream.marshal(XStream.java:1015)
at com.thoughtworks.xstream.XStream.toXML(XStream.java:988)
at hudson.XmlFile.write(XmlFile.java:181)
at org.jenkinsci.plugins.workflow.support.PipelineIOUtils.writeByXStream(PipelineIOUtils.java:30)
at org.jenkinsci.plugins.workflow.job.WorkflowRun.save(WorkflowRun.java:1070)
at hudson.BulkChange.commit(BulkChange.java:98)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.notifyListeners(CpsFlowExecution.java:1377)
at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$3.run(CpsThreadGroup.java:412)
at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.run(CpsVmExecutorService.java:35)
at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:112)
at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
at java.util.concurrent.Executors$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)
Finished: FAILURE



I am not familiar with Jenkins plugins, can anyone suggest any pointers, where can I look for more information, etc.

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