Hi, We are facing some issues with a job that has about 100 stages in parallel, we track down the issue and it happens when we storage artifacts on GCP in parallel, the thing is that I am not sure it is related to the plugin directly, Could someone take a look to this stack trace and confirm that it is not related to the Core? BTW we are using Jenkins 2.252
*19:12:54* java.util.ConcurrentModificationException*19:12:54* at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)*19:12:54* at java.util.HashMap$KeyIterator.next(HashMap.java:1469)*19:12:54* at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:73)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)*19:12:54* at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:264)*19:12:54* at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:251)*19:12:54* Caused: java.lang.RuntimeException: Failed to serialize com.google.jenkins.plugins.storage.reports.BuildGcsUploadReport#files for class com.google.jenkins.plugins.storage.reports.BuildGcsUploadReport*19:12:54* at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:255)*19:12:54* at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:223)*19:12:54* at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)*19:12:54* at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)*19:12:54* at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)*19:12:54* at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64)*19:12:54* at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:74)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)*19:12:54* at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:264)*19:12:54* at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:251)*19:12:54* Caused: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class org.jenkinsci.plugins.workflow.job.WorkflowRun*19:12:54* at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:255)*19:12:54* at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:223)*19:12:54* at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)*19:12:54* at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)*19:12:54* at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)*19:12:54* at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)*19:12:54* at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)*19:12:54* at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)*19:12:54* at com.thoughtworks.xstream.XStream.marshal(XStream.java:1026)*19:12:54* at com.thoughtworks.xstream.XStream.marshal(XStream.java:1015)*19:12:54* at com.thoughtworks.xstream.XStream.toXML(XStream.java:988)*19:12:54* at hudson.util.XStream2.toXMLUTF8(XStream2.java:313)*19:12:54* at org.jenkinsci.plugins.workflow.support.PipelineIOUtils.writeByXStream(PipelineIOUtils.java:34)*19:12:54* at org.jenkinsci.plugins.workflow.job.WorkflowRun.save(WorkflowRun.java:1199)*19:12:54* at hudson.BulkChange.commit(BulkChange.java:98)*19:12:54* at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.notifyListeners(CpsFlowExecution.java:1475)*19:12:54* at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$3.run(CpsThreadGroup.java:489)*19:12:54* at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.run(CpsVmExecutorService.java:38)*19:12:54* at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:136)*19:12:54* at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)*19:12:54* at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)*19:12:54* at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)*19:12:54* at java.util.concurrent.FutureTask.run(FutureTask.java:266)*19:12:54* at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)*19:12:54* at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)*19:12:54* at java.lang.Thread.run(Thread.java:748) Thanks Ivan Fernandez -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/CAKo5QrpFm0aNeQwzDHt_gkh7JoczFfc6V%3D%2BULy2pw0vYagYygQ%40mail.gmail.com.