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Deepti K commented on JENKINS-10771: ------------------------------------ I have jenkins 1.456 installed on my machine hosting Ubuntu 11.04(Natty) with openjdk-6-jre. The jobs are executed on the ec2 slaves which are configured for provisioning Ubuntu 12.04 (precise, beta) images and openjdk-6-jre. My builds failed constantly with the following error when more than one build executed on the slave simultaneously: Caused by: java.lang.LinkageError: loader (instance of hudson/remoting/RemoteClassLoader): attempted duplicate class definition for name: "hudson/model/AbstractProject" at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:634) at java.lang.ClassLoader.defineClass(ClassLoader.java:480) at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:152) at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:131) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2444) at java.lang.Class.getDeclaredMethod(Class.java:1952) at java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1396) at java.io.ObjectStreamClass.access$1700(ObjectStreamClass.java:69) at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:455) at java.security.AccessController.doPrivileged(Native Method) at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:430) at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:327) at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:564) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1600) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1513) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1749) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1963) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1887) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1963) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1887) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368) at hudson.remoting.UserRequest.deserialize(UserRequest.java:182) at hudson.remoting.UserRequest.perform(UserRequest.java:98) at hudson.remoting.UserRequest.perform(UserRequest.java:48) at hudson.remoting.Request$2.run(Request.java:287) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:679) Relaunching the slave and executing the builds did not help. As a workaround I restricted only 1 build executor on the slave and it seem to build the jobs successfully. But this inturn leads to poor utilisation of the slaves. I would request to fix the bug at the earliest. > hudson.util.IOException2: remote file operation failed > ------------------------------------------------------ > > Key: JENKINS-10771 > URL: https://issues.jenkins-ci.org/browse/JENKINS-10771 > Project: Jenkins > Issue Type: Bug > Components: master-slave > Affects Versions: current > Environment: node: Windows Server 2008 R2, amd64 - Intel64 Family 6 > Model 15 Stepping 1, GenuineIntel, jvm 1.6.0_25-b06 > master: AIX > Reporter: Thorsten Löber > > After upgrading jenkins from 1.415 to 1.426 we cannot build anymore any > project on our windows node. We get the exception: > Building remotely on WSJENKINSDEV01 > hudson.util.IOException2: remote file operation failed: d:\Program > Files\jenkins_slave\workspace\TASC Workbench at > hudson.remoting.Channel@4f854f85:WSJENKINSDEV01 > at hudson.FilePath.act(FilePath.java:754) > at hudson.FilePath.act(FilePath.java:740) > at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:731) > at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:676) > at hudson.model.AbstractProject.checkout(AbstractProject.java:1193) > at > hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:555) > at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:443) > at hudson.model.Run.run(Run.java:1376) > at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46) > at hudson.model.ResourceController.execute(ResourceController.java:88) > at hudson.model.Executor.run(Executor.java:230) > Caused by: java.io.IOException: Remote call on WSJENKINSDEV01 failed > at hudson.remoting.Channel.call(Channel.java:677) > at hudson.FilePath.act(FilePath.java:747) > ... 10 more > Caused by: java.lang.NoClassDefFoundError: Could not initialize class > hudson.model.Hudson > at > hudson.scm.SubversionWorkspaceSelector.syncWorkspaceFormatFromMaster(SubversionWorkspaceSelector.java:85) > at > hudson.scm.SubversionSCM.createSvnClientManager(SubversionSCM.java:808) > at hudson.scm.SubversionSCM$CheckOutTask.invoke(SubversionSCM.java:751) > at hudson.scm.SubversionSCM$CheckOutTask.invoke(SubversionSCM.java:738) > at hudson.FilePath$FileCallableWrapper.call(FilePath.java:1994) > at hudson.remoting.UserRequest.perform(UserRequest.java:118) > at hudson.remoting.UserRequest.perform(UserRequest.java:48) > at hudson.remoting.Request$2.run(Request.java:287) > at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown > Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) > at hudson.remoting.Engine$1$1.run(Engine.java:60) > at java.lang.Thread.run(Unknown Source) > As soon as we rollback, we are able again to build the project. -- This message is automatically generated by JIRA. 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