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Type: Bug
Resolution: Won't Fix
Priority: Critical
Component/s: maven-plugin
Labels:
- java6
- jdk
- regression
- remoting
- remoting3
Environment:
Slave.jar running under Java 7
Project: Maven 3.2.2, JDK 6

Similar Issues:

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Seems the switching mechanism does not kick in again. On a local build all locks fine:

[maven-jdk-test] $ /export/sbs/jenkins/home/tools/hudson.model.JDK/JDK_1.6.0_latest_/bin/java -cp /export/sbs/jenkins/home/plugins/maven-plugin/WEB-INF/lib/maven32-agent-1.8.1.jar:/export/sbs/jenkins/home/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x/boot/plexus-classworlds-2.5.2.jar:/export/sbs/jenkins/home/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x/conf/logging jenkins.maven3.agent.Maven32Main /export/sbs/jenkins/home/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x /run/jenkins/war/WEB-INF/lib/remoting-3.2.jar /export/sbs/jenkins/home/plugins/maven-plugin/WEB-INF/lib/maven32-interceptor-1.8.1.jar /export/sbs/jenkins/home/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-commons-1.8.1.jar 41978
Exception in thread "main" java.lang.UnsupportedClassVersionError: hudson/remoting/Launcher : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401)
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:254)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
	at jenkins.maven3.agent.Maven32Main.main(Maven32Main.java:143)
	at jenkins.maven3.agent.Maven32Main.main(Maven32Main.java:74)
ERROR: ================================================================================
ERROR: Invalid project setup: Connection reset
ERROR: [JENKINS-18403][JENKINS-28294] JDK 'JDK 1.6.0 (latest)' not supported to run Maven projects.
ERROR: Maven projects have to be launched with a Java version greater or equal to the minimum version required by the master.
ERROR: Use the Maven JDK Toolchains (plugin) to build your maven project with an older JDK.
ERROR: Retrying with slave Java and setting compile/test properties to point to /export/sbs/jenkins/home/tools/hudson.model.JDK/JDK_1.6.0_latest_.
ERROR: ================================================================================
Established TCP socket on 34326
[maven-jdk-test] $ /export0/sbs/jenkins-runtime-jdk1.8.0/jre/bin/java -cp /export/sbs/jenkins/home/plugins/maven-plugin/WEB-INF/lib/maven32-agent-1.8.1.jar:/export/sbs/jenkins/home/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x/boot/plexus-classworlds-2.5.2.jar:/export/sbs/jenkins/home/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x/conf/logging jenkins.maven3.agent.Maven32Main /export/sbs/jenkins/home/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x /run/jenkins/war/WEB-INF/lib/remoting-3.2.jar /export/sbs/jenkins/home/plugins/maven-plugin/WEB-INF/lib/maven32-interceptor-1.8.1.jar /export/sbs/jenkins/home/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-commons-1.8.1.jar 34326
<===[JENKINS REMOTING CAPACITY]===>channel started
BUILD Starts

but on a remote node this (same job) fails:

Parsing POMs
Established TCP socket on 34109
maven32-agent.jar already up to date
maven32-interceptor.jar already up to date
maven3-interceptor-commons.jar already up to date
[-maven-jdk-test] $ /export/build/jenkins-localfs/tools/hudson.model.JDK/JDK_1.6.0_latest_/bin/java -cp /export/build/jenkins-localfs/maven32-agent.jar:/export/build/jenkins-localfs/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x/boot/plexus-classworlds-2.5.2.jar:/export/build/jenkins-localfs/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x/conf/logging jenkins.maven3.agent.Maven32Main /export/build/jenkins-localfs/tools/hudson.tasks.Maven_MavenInstallation/maven-3.2.x /export/build/jenkins-localfs/slave.jar /export/build/jenkins-localfs/maven32-interceptor.jar /export/build/jenkins-localfs/maven3-interceptor-commons.jar 34109
Exception in thread "main" java.lang.UnsupportedClassVersionError: hudson/remoting/Launcher : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401)
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:254)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
	at jenkins.maven3.agent.Maven32Main.main(Maven32Main.java:143)
	at jenkins.maven3.agent.Maven32Main.main(Maven32Main.java:74)
ERROR: Failed to parse POMs
java.io.EOFException: unexpected stream termination
	at hudson.remoting.ChannelBuilder.negotiate(ChannelBuilder.java:365)
	at hudson.remoting.ChannelBuilder.build(ChannelBuilder.java:310)
	at hudson.slaves.Channels.forProcess(Channels.java:115)
	at hudson.maven.AbstractMavenProcessFactory.newProcess(AbstractMavenProcessFactory.java:294)
	at hudson.maven.ProcessCache.get(ProcessCache.java:236)
	at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:798)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534)
	at hudson.model.Run.execute(Run.java:1728)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:544)
	at hudson.model.ResourceController.execute(ResourceController.java:98)
	at hudson.model.Executor.run(Executor.java:404)
Finished: FAILURE

Again I'm not sure if this is a remoting or maven plugin issue. I switched back to Jenkins 2.19.3 and all worked fine again.

I now there is a workaround (Will insert the link asap) but this is manual fragile work on all affected Jobs (which is a lot here).

With the old remoting (2.62) the caught exception that successfully triggers the switch is as follows:

ERROR: Caught java.io.IOException: Remote call on Channel to Maven [/home/jenkins/ws/tools/hudson.model.JDK/jdk1.6.x/bin/java, -cp, /home/jenkins/ws/maven32-agent.jar:/home/jenkins/ws/tools/hudson.tasks.Maven_MavenInstallation/maven_3.2.x/boot/plexus-classworlds-2.5.2.jar:\home\jenkins\ws\tools\hudson.tasks.Maven_MavenInstallation\maven_3.2.x/conf/logging, jenkins.maven3.agent.Maven32Main, /home/jenkins/ws/tools/hudson.tasks.Maven_MavenInstallation/maven_3.2.x, /home/jenkins/ws/slave.jar, /home/jenkins/ws/maven32-interceptor.jar, /home/jenkins/ws/maven3-interceptor-commons.jar, 41311] failed
java.io.IOException: Remote call on Channel to Maven [/home/jenkins/ws/tools/hudson.model.JDK/jdk1.6.x/bin/java, -cp, /home/jenkins/ws/maven32-agent.jar:/home/jenkins/ws/tools/hudson.tasks.Maven_MavenInstallation/maven_3.2.x/boot/plexus-classworlds-2.5.2.jar:\home\jenkins\ws\tools\hudson.tasks.Maven_MavenInstallation\maven_3.2.x/conf/logging, jenkins.maven3.agent.Maven32Main, /home/jenkins/ws/tools/hudson.tasks.Maven_MavenInstallation/maven_3.2.x, /home/jenkins/ws/slave.jar, /home/jenkins/ws/maven32-interceptor.jar, /home/jenkins/ws/maven3-interceptor-commons.jar, 41311] failed
	at hudson.remoting.Channel.call(Channel.java:805)
	at hudson.maven.AbstractMavenProcessFactory.newProcess(AbstractMavenProcessFactory.java:297)
	at hudson.maven.ProcessCache.get(ProcessCache.java:236)
	at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:798)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534)
	at hudson.model.Run.execute(Run.java:1720)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:544)
	at hudson.model.ResourceController.execute(ResourceController.java:98)
	at hudson.model.Executor.run(Executor.java:404)
Caused by: java.lang.ClassFormatError: Failed to load hudson.maven.AbstractMavenProcessFactory$ConfigureOriginalJDK
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:375)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:285)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:249)
	at hudson.remoting.MultiClassLoaderSerializer$Input.resolveClass(MultiClassLoaderSerializer.java:124)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1589)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1494)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1748)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
	at hudson.remoting.UserRequest.deserialize(UserRequest.java:217)
	at hudson.remoting.UserRequest.perform(UserRequest.java:131)
	at hudson.remoting.UserRequest.perform(UserRequest.java:50)
	at hudson.remoting.Request$2.run(Request.java:332)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
	at java.lang.Thread.run(Thread.java:662)
	at ......remote call to Channel to Maven [/home/jenkins/ws/tools/hudson.model.JDK/jdk1.6.x/bin/java, -cp, /home/jenkins/ws/maven32-agent.jar:/home/jenkins/ws/tools/hudson.tasks.Maven_MavenInstallation/maven_3.2.x/boot/plexus-classworlds-2.5.2.jar:\home\jenkins\ws\tools\hudson.tasks.Maven_MavenInstallation\maven_3.2.x/conf/logging, jenkins.maven3.agent.Maven32Main, /home/jenkins/ws/tools/hudson.tasks.Maven_MavenInstallation/maven_3.2.x, /home/jenkins/ws/slave.jar, /home/jenkins/ws/maven32-interceptor.jar, /home/jenkins/ws/maven3-interceptor-commons.jar, 41311](Native Method)
	at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1433)
	at hudson.remoting.UserResponse.retrieve(UserRequest.java:253)
	at hudson.remoting.Channel.call(Channel.java:797)
	... 8 more
Caused by: java.lang.UnsupportedClassVersionError: hudson/maven/AbstractMavenProcessFactory$ConfigureOriginalJDK : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:373)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:285)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:249)
	at hudson.remoting.MultiClassLoaderSerializer$Input.resolveClass(MultiClassLoaderSerializer.java:124)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1589)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1494)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1748)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
	at hudson.remoting.UserRequest.deserialize(UserRequest.java:217)
	at hudson.remoting.UserRequest.perform(UserRequest.java:131)
	at hudson.remoting.UserRequest.perform(UserRequest.java:50)
	at hudson.remoting.Request$2.run(Request.java:332)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
	at java.lang.Thread.run(Thread.java:662)

is duplicated by

JENKINS-40810 UnsupportedClassVersionError when using JDK6

Resolved

relates to

JENKINS-18403 Jenkins 1.518 causes Java 5 Maven builds to fail

Resolved

JENKINS-25272 remoting-2.46.jar breaks JDK 5 Maven builds

Resolved

JENKINS-68878 Cannot run jaxws:wsimport from Maven project with Java 8 on 2.357

Closed

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