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  1. Jenkins
  2. JENKINS-49162

ConcurrentModificationException rarely occur when serialized CloudStatistics.active field

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    Description

      ConcurrentModificationException is rarely thrown when CloudStatistics.active filed is serialized via XSTREAM during CloudStatistics.save() operation.

      javax.servlet.ServletException: java.lang.RuntimeException: Failed to serialize org.jenkinsci.plugins.cloudstats.CloudStatistics#active for class org.jenkinsci.plugins.cloudstats.CloudStatistics
              at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:796)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
              at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:211)
              at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
              at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
              at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249)
              at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
              at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
              at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
              at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:686)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1494)
              at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:123)
              at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:114)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
              at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:48)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
              at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
              at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
              at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:168)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
              at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
              at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
              at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
              at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
              at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
              at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
              at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
              at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
              at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
              at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
              at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
              at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
              at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
              at org.eclipse.jetty.server.Server.handle(Server.java:370)
              at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
              at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:960)
              at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1021)
              at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:957)
              at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
              at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
              at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
              at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
              at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
              at java.lang.Thread.run(Thread.java:745)
      Caused by: java.lang.RuntimeException: Failed to serialize org.jenkinsci.plugins.cloudstats.CloudStatistics#active for class org.jenkinsci.plugins.cloudstats.CloudStatistics
              at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:214)
              at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:182)
              at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
              at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:167)
              at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:108)
              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:178)
              at org.jenkinsci.plugins.cloudstats.CloudStatistics.save(CloudStatistics.java:219)
              at org.jenkinsci.plugins.cloudstats.CloudStatistics.persist(CloudStatistics.java:224)
              at org.jenkinsci.plugins.cloudstats.CloudStatistics.access$100(CloudStatistics.java:68)
              at org.jenkinsci.plugins.cloudstats.CloudStatistics$ProvisioningListener.onStarted(CloudStatistics.java:307)
              at com.redhat.jenkins.nodesharingfrontend.SharedNode.init(SharedNode.java:72)
              at com.redhat.jenkins.nodesharingfrontend.SharedNodeCloud.createNode(SharedNodeCloud.java:280)
              at com.redhat.jenkins.nodesharingfrontend.Api.doUtilizeNode(Api.java:188)
              at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
              at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
              at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
              at java.lang.reflect.Method.invoke(Method.java:497)
              at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
              at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:46)
              at org.kohsuke.stapler.Function$InterceptedFunction.invoke(Function.java:399)
              at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
              at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
              at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:121)
              at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
              at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
              ... 52 more
      Caused by: java.util.ConcurrentModificationException
              at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:711)
              at java.util.LinkedHashMap$LinkedKeyIterator.next(LinkedHashMap.java:734)
              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:223)
              at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:210)
              ... 84 more

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          pajasoft Pavel Janoušek
          pajasoft Pavel Janoušek
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            Created:
            Updated:
            Resolved: