[JENKINS-40990] Jenkins 2.27 with remoting 3.0 causes Java 5/6 Maven builds to fail

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

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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

Andreas Mandel created issue - 2017-01-11 10:00

Andreas Mandel made changes - 2017-01-11 10:00

Description

Original: After the upgrade from Jenkins 1.515 to Jenkins 1.518 one of our Maven projects failed due to a ClassFormatException:

{code}
23:13:30 [JENKINS] Archiving site from /export/build/jenkins-slave/workspace/xxx-nightly-trunk/target/site to /export/build/jenkins/jobs/xxx-nightly-trunk/site
23:13:37 java.lang.reflect.InvocationTargetException
23:13:37 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
23:13:37 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
23:13:37 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
23:13:37 at java.lang.reflect.Method.invoke(Method.java:592)
23:13:37 at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
23:13:37 at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
23:13:37 at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158)
23:13:37 at hudson.maven.Maven3Builder.call(Maven3Builder.java:100)
23:13:37 at hudson.maven.Maven3Builder.call(Maven3Builder.java:66)
23:13:37 at hudson.remoting.UserRequest.perform(UserRequest.java:118)
23:13:37 at hudson.remoting.UserRequest.perform(UserRequest.java:48)
23:13:37 at hudson.remoting.Request$2.run(Request.java:326)
23:13:37 at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
23:13:37 at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
23:13:37 at java.util.concurrent.FutureTask.run(FutureTask.java:123)
23:13:37 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:651)
23:13:37 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:676)
23:13:37 at java.lang.Thread.run(Thread.java:595)
23:13:37 Caused by: java.lang.ClassFormatError: Failed to load jnr.ffi.mapper.FunctionMapper
23:13:37 at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:193)
23:13:37 at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:144)
23:13:37 at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
23:13:37 at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
23:13:37 at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
23:13:37 at hudson.os.PosixAPI.jnr(PosixAPI.java:30)
23:13:37 at hudson.util.IOUtils.mode(IOUtils.java:125)
23:13:37 at hudson.util.io.TarArchiver.visit(TarArchiver.java:102)
23:13:37 at hudson.util.DirScanner$Glob.scan(DirScanner.java:133)
23:13:37 at hudson.FilePath.writeToTar(FilePath.java:1979)
23:13:37 at hudson.FilePath.copyRecursiveTo(FilePath.java:1905)
23:13:37 at hudson.FilePath.copyRecursiveTo(FilePath.java:1832)
23:13:37 at hudson.maven.reporters.MavenSiteArchiver.postExecute(MavenSiteArchiver.java:82)
23:13:37 at hudson.maven.Maven3Builder$MavenExecutionListener.recordMojoEnded(Maven3Builder.java:453)
23:13:37 at hudson.maven.Maven3Builder$MavenExecutionListener.mojoSucceeded(Maven3Builder.java:435)
23:13:37 at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:87)
23:13:37 at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:42)
23:13:37 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:228)
23:13:37 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
23:13:37 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
23:13:37 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
23:13:37 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
23:13:37 at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
23:13:37 at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
23:13:37 at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
23:13:37 at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
23:13:37 at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79)
23:13:37 ... 18 more
23:13:37 Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
23:13:37 at java.lang.ClassLoader.defineClass1(Native Method)
23:13:37 at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
23:13:37 at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
23:13:37 at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:191)
23:13:37 ... 44 more
23:13:37 channel stopped
23:13:38 ERROR: Failed to parse POMs
{code}

The issue can be found in the call stack:
The Jenkins slave calls the Maven launcher and and the Maven launcher does a callback into the Jenkins code to perform some IO operations. For those operations, the jnr-ffi library is used and this has been compiled on the 8th of June under OpenJDK 6 and under Oracle JDK 7:
https://travis-ci.org/jnr/jnr-ffi
The pom.xml of the library has no compiler plugin configuration and thus creates code for whatever JDK it runs on (Java 6 class version 50) and I assume that this new version of the library has been pulled in between 1.516 and 1.518 of Jenkins.

That means this new version of the jnr-ffi library drops Java 5 support for certain Maven builds.

Andreas Mandel made changes - 2017-01-11 10:01

Environment

Original: Ubuntu Linux 12.04 LTS
Slave.jar running under Java 7
Project: Maven 3.0.4, JDK 5 Update 22

New: Slave.jar running under Java 7
Project: Maven 3.2.2, JDK 6

Andreas Mandel made changes - 2017-01-11 10:07

Description

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

{code}
[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
{code}

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

{code}
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
{code}

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).

Andreas Mandel made changes - 2017-01-11 10:10

Link

New: This issue relates to ~~JENKINS-18403~~ [ ~~JENKINS-18403~~ ]

Andreas Mandel made changes - 2017-01-11 10:16

Link

New: This issue relates to ~~JENKINS-25272~~ [ ~~JENKINS-25272~~ ]

Daniel Beck made changes - 2017-01-17 23:40

Link

New: This issue duplicates ~~JENKINS-40810~~ [ ~~JENKINS-40810~~ ]

Daniel Beck made changes - 2017-01-17 23:40

Resolution		New: Duplicate [ 3 ]
Status	Original: Open [ 1 ]	New: Closed [ 6 ]

Andreas Mandel added a comment - 2017-01-18 06:31

Hi Daniel,

thanks for looking into this and sorry to reopen this. I know that remoting does not support the older JDKs, so does the maven build job type. For that reason the JDK switch was implemented which works fine on a local build 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_., but fails on the remote build. I assume it is because of a different exception raised in this case with the new remoting, but I'm do not have deep knowledge here. Something like jglick did in the linked ticket https://issues.jenkins-ci.org/browse/JENKINS-25272?focusedCommentId=234013&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-234013 might fix the issue described here.

Kind Regards,
Andreas.

Andreas Mandel added a comment - 2017-01-18 06:31 Hi Daniel, thanks for looking into this and sorry to reopen this. I know that remoting does not support the older JDKs, so does the maven build job type. For that reason the JDK switch was implemented which works fine on a local build 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_. , but fails on the remote build. I assume it is because of a different exception raised in this case with the new remoting, but I'm do not have deep knowledge here. Something like jglick did in the linked ticket https://issues.jenkins-ci.org/browse/JENKINS-25272?focusedCommentId=234013&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-234013 might fix the issue described here. Kind Regards, Andreas.

Andreas Mandel made changes - 2017-01-18 06:31

Assignee	Original: Jesse Glick [ jglick ]	New: Daniel Beck [ danielbeck ]
Resolution	Original: Duplicate [ 3 ]
Status	Original: Closed [ 6 ]	New: Reopened [ 4 ]

Assignee:: Unassigned

Reporter:: Andreas Mandel

Votes:: 7 Vote for this issue

Watchers:: 9 Start watching this issue

Created:: 2017-01-11 10:00

Updated:: 2022-06-30 08:37

Resolved:: 2018-07-10 12:03

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Collapse comment: Andreas Mandel added a comment - 2017-01-18 06:31

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