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-40810UnsupportedClassVersionError when using JDK6
Resolved
relates to
JENKINS-18403Jenkins 1.518 causes Java 5 Maven builds to fail
oleg_nenashev thanks for the feedback.
Basically I've explained it all above already, so I try to give it some more detail.
I see 2 things here the one is the JDK which is required to run Jenkins master or the nodes and the JDK required to execute a job. This is very well solved for freestyle jobs, where I can even execute a JDK1.4 build with a recent Jenkins running on Java 8. But it is broken now with the maven job type (which I know is evil, not only for that reason). IMHO it is essential that the JDK that powers Jenkins in unrelated to the JDK that performs the build. We can build any old Visual Basic software but fail with a old Java maven build?
The maven plugin requires JDK1.6 and 1.7 since a long time - before the change to remoting 3.0. This is the reason why the maven plugin switches the execution JDK to the platform JDK and points compiler etc. to the old JDK (see the linked code change in my comment above). This switch now does not work any more and must be repaired to function again. The main question is why the root cause exception UnsupportedClassVersionError is not visible any more to the caller of Channel.call(...), and how we can make this visible again. If this is not possible there should be a other solution,
Please note that this issue will hit projects bound to Java 7 also, once Jenkins requires Java 8.
Andreas Mandel
added a comment - oleg_nenashev thanks for the feedback.
Basically I've explained it all above already, so I try to give it some more detail.
I see 2 things here the one is the JDK which is required to run Jenkins master or the nodes and the JDK required to execute a job. This is very well solved for freestyle jobs, where I can even execute a JDK1.4 build with a recent Jenkins running on Java 8. But it is broken now with the maven job type (which I know is evil, not only for that reason). IMHO it is essential that the JDK that powers Jenkins in unrelated to the JDK that performs the build. We can build any old Visual Basic software but fail with a old Java maven build?
The maven plugin requires JDK1.6 and 1.7 since a long time - before the change to remoting 3.0. This is the reason why the maven plugin switches the execution JDK to the platform JDK and points compiler etc. to the old JDK (see the linked code change in my comment above). This switch now does not work any more and must be repaired to function again. The main question is why the root cause exception UnsupportedClassVersionError is not visible any more to the caller of Channel.call(...) , and how we can make this visible again. If this is not possible there should be a other solution,
Please note that this issue will hit projects bound to Java 7 also, once Jenkins requires Java 8.
I see no way how a fix could be applied on the remoting side. The Java 7 upgrade in the core has been announced long long ago, and actually it was a responsibility of (non-existent?) Maven Project Plugin maintainers to make it work accordingly if they wanted to retain the compatibility with Java 6. CC aheritier, who is listed as a plugin maintainer.
Fix Approach 1: Compatibility layer in the Maven Project Plugin
Maven plugin should include the Shaded version of remoting 2.x with isolated classloader & Co
Maven plugin should be able to use this remoting version transparently in the entire Maven Interceptors logic
Fix Approach 2: Complete rework of the Maven Project Plugin
Workarounds: For Java 6 use native Maven build steps instead of the Maven plugin.
Regarding the Java 8 migration concern, I have raised the topic here The good news is that I have no middle-term plans to deprecate Java 7 in Remoting.
Oleg Nenashev
added a comment - andreasmandel
I see no way how a fix could be applied on the remoting side. The Java 7 upgrade in the core has been announced long long ago, and actually it was a responsibility of (non-existent?) Maven Project Plugin maintainers to make it work accordingly if they wanted to retain the compatibility with Java 6. CC aheritier , who is listed as a plugin maintainer.
Fix Approach 1: Compatibility layer in the Maven Project Plugin
Maven plugin should include the Shaded version of remoting 2.x with isolated classloader & Co
Maven plugin should be able to use this remoting version transparently in the entire Maven Interceptors logic
Fix Approach 2: Complete rework of the Maven Project Plugin
Workarounds: For Java 6 use native Maven build steps instead of the Maven plugin.
Regarding the Java 8 migration concern, I have raised the topic here The good news is that I have no middle-term plans to deprecate Java 7 in Remoting.
There is a standing mitigation which just happened to get broken by accident. We should fix the breakage and we will be back where we always were. I do not think this blocks a Java 8 migration in any way.
Jesse Glick
added a comment - There is a standing mitigation which just happened to get broken by accident. We should fix the breakage and we will be back where we always were. I do not think this blocks a Java 8 migration in any way.
aheritier From what I understood from your recent tweet, you are not going to support Maven Project plugin for Java versions older than the cores one. If yes, could you please clarify it here and maybe in the plugin's Wiki?
Oleg Nenashev
added a comment - aheritier From what I understood from your recent tweet, you are not going to support Maven Project plugin for Java versions older than the cores one. If yes, could you please clarify it here and maybe in the plugin's Wiki?
All improvements to make it more understable are welcomed
Jenkins was "silently" changing the JDK selected by the customer to the one used to launch the agent (which I find completely crappy)
This is this "silent" change which is now broken here...
Arnaud Héritier
added a comment - It never worked as documented in https://wiki.jenkins-ci.org/display/JENKINS/Maven+Project+Plugin
All improvements to make it more understable are welcomed
Jenkins was "silently" changing the JDK selected by the customer to the one used to launch the agent (which I find completely crappy)
This is this "silent" change which is now broken here...
Jenkins was "silently" changing the JDK selected by the customer to the one used to launch the agent
IIRC it was not silent, and of course this was paired with setting Maven properties to achieve the same effect in most cases.
Jesse Glick
added a comment - Jenkins was "silently" changing the JDK selected by the customer to the one used to launch the agent
IIRC it was not silent, and of course this was paired with setting Maven properties to achieve the same effect in most cases.
Yes jglick "silently" because it was "hidden" in your build logs (at the beginning of your build thus often very far from your build failure) and a large part of users didn't took care of it and thus yes in most cases it was transparent by setting only the source/target (if your code isn't hitting a JDK compat issue, your build isn't hardcoding the source/target, ...)
Arnaud Héritier
added a comment - Yes jglick "silently" because it was "hidden" in your build logs (at the beginning of your build thus often very far from your build failure) and a large part of users didn't took care of it and thus yes in most cases it was transparent by setting only the source/target (if your code isn't hitting a JDK compat issue, your build isn't hardcoding the source/target, ...)
Currently the plugin Wiki explicitly documents Java compatibility.
I would suggest closing this ticket aheritier . Otherwise we will end up having Java 10+ queries here as well.
Oleg Nenashev
added a comment - Currently the plugin Wiki explicitly documents Java compatibility.
I would suggest closing this ticket aheritier . Otherwise we will end up having Java 10+ queries here as well.
Here the problem is having the hack which is auto-switching the JVM configured by the project to the Agent JVM which is broken because of remoting Java version
It's not something we can fix easily.
Arnaud Héritier
added a comment - yes makes sense oleg_nenashev
Here the problem is having the hack which is auto-switching the JVM configured by the project to the Agent JVM which is broken because of remoting Java version
It's not something we can fix easily.
I would suggest closing this ticket Arnaud Héritier . Otherwise we will end up having Java 10+ queries here as well.
Hello from the future! I think the same problem is happening again in JENKINS-68878.
Basil Crow
added a comment - I would suggest closing this ticket Arnaud Héritier . Otherwise we will end up having Java 10+ queries here as well.
Hello from the future! I think the same problem is happening again in JENKINS-68878 .
Unassigned
Andreas Mandel
Votes:
7Vote for this issue
Watchers:
9Start watching this issue
Created:
Updated:
Resolved:
{"searchers":{"groups":[{"searchers":[{"name":"Project","id":"project","key":"issue.field.project","isShown":true,"lastViewed":1740808709518},{"name":"Summary","id":"summary","key":"issue.field.summary","isShown":true},{"name":"Type","id":"issuetype","key":"issue.field.issuetype","isShown":true,"lastViewed":1740808709519},{"name":"Status","id":"status","key":"issue.field.status","isShown":true,"lastViewed":1740808709558},{"name":"Priority","id":"priority","key":"issue.field.priority","isShown":true},{"name":"Resolution","id":"resolution","key":"issue.field.resolution","isShown":true},{"name":"Creator","id":"creator","key":"issue.field.creator","isShown":true},{"name":"Component","id":"component","key":"issue.field.components","isShown":true},{"name":"% Limits","id":"workratio","key":"issue.field.workratio","isShown":true},{"name":"Link types","id":"issue_link_type","key":"issue.field.issuelinks","isShown":true},{"name":"Environment","id":"environment","key":"issue.field.environment","isShown":true},{"name":"Description","id":"description","key":"issue.field.description","isShown":true},{"name":"Comment","id":"comment","key":"issue.field.comment","isShown":true},{"name":"Label","id":"labels","key":"issue.field.labels","isShown":true,"lastViewed":1740808709568},{"name":"Query","id":"text","key":"text","isShown":true},{"name":"Bonfire Browser","id":"customfield_10229","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Bonfire Operating System","id":"customfield_10231","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Bonfire Screen Resolution","id":"customfield_10244","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Bonfire URL","id":"customfield_10237","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Bonfire User Agent","id":"customfield_10226","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Bonfire jQuery Version","id":"customfield_10252","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Business Value","id":"customfield_10333","key":"com.atlassian.jira.plugin.system.customfieldtypes:float","isShown":false},{"name":"Development","id":"customfield_10720","key":"com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary","isShown":true},{"name":"Epic Color","id":"customfield_10328","key":"com.pyxis.greenhopper.jira:gh-epic-color","isShown":false},{"name":"Epic Link","id":"customfield_10325","key":"com.pyxis.greenhopper.jira:gh-epic-link","isShown":true},{"name":"Epic Name","id":"customfield_10327","key":"com.pyxis.greenhopper.jira:gh-epic-label","isShown":true},{"name":"Epic Status","id":"customfield_10326","key":"com.pyxis.greenhopper.jira:gh-epic-status","isShown":false},{"name":"Epic/Theme","id":"customfield_10331","key":"com.atlassian.jira.plugin.system.customfieldtypes:labels","isShown":true},{"name":"Flagged","id":"customfield_10330","key":"com.atlassian.jira.plugin.system.customfieldtypes:multicheckboxes","isShown":true},{"name":"GitHub Users to Authorize as Committers","id":"customfield_10323","key":"com.atlassian.jira.plugin.system.customfieldtypes:textarea","isShown":true},{"name":"Issue Tracker","id":"customfield_11320","key":"com.atlassian.jira.plugin.system.customfieldtypes:select","isShown":true},{"name":"JIRA Capture Browser","id":"customfield_10228","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Browser","id":"customfield_10230","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Document Mode","id":"customfield_10258","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Operating System","id":"customfield_10232","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Operating System","id":"customfield_10233","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Operating System","id":"customfield_10234","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Operating System","id":"customfield_10236","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Operating System","id":"customfield_10238","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Operating System","id":"customfield_10239","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Screen Resolution","id":"customfield_10245","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Screen Resolution","id":"customfield_10246","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Screen Resolution","id":"customfield_10247","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Screen Resolution","id":"customfield_10248","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Screen Resolution","id":"customfield_10249","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture Screen Resolution","id":"customfield_10250","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture URL","id":"customfield_10240","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture URL","id":"customfield_10241","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture URL","id":"customfield_10242","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture URL","id":"customfield_10243","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture User Agent","id":"customfield_10225","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture User Agent","id":"customfield_10227","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture jQuery Version","id":"customfield_10251","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture jQuery Version","id":"customfield_10253","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture jQuery Version","id":"customfield_10254","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture jQuery Version","id":"customfield_10255","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture jQuery Version","id":"customfield_10256","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"JIRA Capture jQuery Version","id":"customfield_10257","key":"com.atlassian.bonfire.plugin:bonfire-text","isShown":true},{"name":"Meeting minutes URL","id":"customfield_10020","key":"com.atlassian.jira.plugin.system.customfieldtypes:url","isShown":false},{"name":"New Repository Name","id":"customfield_10321","key":"com.atlassian.jira.plugin.system.customfieldtypes:textfield","isShown":true},{"name":"Original story points","id":"customfield_11423","key":"com.atlassian.jpo:jpo-custom-field-original-story-points","isShown":true},{"name":"Parent Link","id":"customfield_11420","key":"com.atlassian.jpo:jpo-custom-field-parent","isShown":false},{"name":"Plugin Description","id":"customfield_10322","key":"com.atlassian.jira.plugin.system.customfieldtypes:textarea","isShown":true},{"name":"Raised During","id":"customfield_10220","key":"com.atlassian.bonfire.plugin:bonfire-session-cft","isShown":false},{"name":"Raised During","id":"customfield_10221","key":"com.atlassian.bonfire.plugin:bonfire-session-cft","isShown":false},{"name":"Rank","id":"customfield_10324","key":"com.pyxis.greenhopper.jira:gh-lexo-rank","isShown":true},{"name":"Released As","id":"customfield_10620","key":"com.atlassian.jira.plugin.system.customfieldtypes:textfield","isShown":true},{"name":"Repository URL","id":"customfield_10320","key":"com.atlassian.jira.plugin.system.customfieldtypes:url","isShown":true},{"name":"Similar Issues","id":"customfield_10520","key":"com.suggestimate:similar-issues-custom-field","isShown":true},{"name":"Sprint","id":"customfield_10329","key":"com.pyxis.greenhopper.jira:gh-sprint","isShown":true},{"name":"Story Points","id":"customfield_10332","key":"com.atlassian.jira.plugin.system.customfieldtypes:float","isShown":false},{"name":"Team","id":"customfield_11424","key":"com.atlassian.teams:rm-teams-custom-field-team","isShown":true},{"name":"Test Sessions","id":"customfield_10222","key":"com.atlassian.bonfire.plugin:bonfire-multi-session-cft","isShown":false},{"name":"Test Sessions","id":"customfield_10223","key":"com.atlassian.bonfire.plugin:bonfire-multi-session-cft","isShown":false},{"name":"Test Sessions","id":"customfield_10224","key":"com.atlassian.bonfire.plugin:bonfire-multi-session-cft","isShown":false},{"name":"Testing Status","id":"customfield_10259","key":"com.atlassian.bonfire.plugin:bonfire-testing-status-cft","isShown":false},{"name":"URL","id":"customfield_10000","key":"com.atlassian.jira.plugin.system.customfieldtypes:url","isShown":true}],"type":"DETAILS","title":"Details"},{"searchers":[{"name":"Created Date","id":"created","key":"issue.field.created","isShown":true},{"name":"Updated Date","id":"updated","key":"issue.field.updated","isShown":true},{"name":"Resolution Date","id":"resolutiondate","key":"issue.field.resolution.date","isShown":true},{"name":"Target end","id":"customfield_11422","key":"com.atlassian.jpo:jpo-custom-field-baseline-end","isShown":true},{"name":"Target start","id":"customfield_11421","key":"com.atlassian.jpo:jpo-custom-field-baseline-start","isShown":true}],"type":"DATES","title":"Dates"},{"searchers":[{"name":"Assignee","id":"assignee","key":"issue.field.assignee","isShown":true,"lastViewed":1740808709560},{"name":"Reporter","id":"reporter","key":"issue.field.reporter","isShown":true}],"type":"PEOPLE","title":"People"}]},"values":{"issuetype":{"name":"Type","editHtml":"\n\n\n\n <div class=\"field-group aui-field-issuetype\" >\n <label for=\"searcher-type\">Type</label> <select class=\"select js-default-checkboxmultiselect\"\n id=\"searcher-type\"\n multiple=\"multiple\"\n name=\"type\"\n data-max-inline-results-displayed=\"100\"\n data-placeholder-text=\"Find Issue Types...\">\n <optgroup>\n \n <option class=\" \"\n id=\"type_-2\"\n title=\"All Standard Issue Types\"\n value=\"-2\">All Standard Issue Types</option>\n </optgroup>\n\n <optgroup label=\"Standard Issue Types\">\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/secure/viewavatar?size=xsmall&avatarId=14673&avatarType=issuetype\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_1\"\n title=\"Bug\"\n value=\"1\">Bug</option>\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/images/icons/issuetypes/epic.png\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_10001\"\n title=\"Epic\"\n value=\"10001\">Epic</option>\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/secure/viewavatar?size=xsmall&avatarId=14680&avatarType=issuetype\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_4\"\n title=\"Improvement\"\n value=\"4\">Improvement</option>\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/secure/viewavatar?size=xsmall&avatarId=14681&avatarType=issuetype\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_2\"\n title=\"New Feature\"\n value=\"2\">New Feature</option>\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/secure/viewavatar?size=xsmall&avatarId=14670&avatarType=issuetype\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_5\"\n title=\"Patch\"\n value=\"5\">Patch</option>\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/secure/viewavatar?size=xsmall&avatarId=14685&avatarType=issuetype\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_10002\"\n title=\"Story\"\n value=\"10002\">Story</option>\n \n <option class=\" imagebacked 10730 \"\n data-icon=\"/secure/viewavatar?size=xsmall&avatarId=14688&avatarType=issuetype\"\n data-fallback-icon=\"/images/icons/issuetypes/blank.png\"\n id=\"type_3\"\n title=\"Task\"\n value=\"3\">Task</option>\n </optgroup>\n\n <optgroup label=\"Sub-Task Issue Types\">\n </optgroup>\n </select>\n </div>\n ","validSearcher":true,"isShown":true},"project":{"name":"Project","editHtml":" \n <div class=\"field-group aui-field-project\" >\n <label for=\"searcher-pid\">Project</label> <select class=\"js-project-checkboxmultiselect\"\n data-placeholder-text=\"Find Projects...\"\n id=\"searcher-pid\"\n multiple=\"multiple\"\n name=\"pid\">\n <optgroup label=\"Recent Projects\">\n </optgroup>\n <optgroup label=\"All Projects\" >\n \n <option data-icon=\"/secure/projectavatar?pid=10172&size=small\"\n title=\"Jenkins\"\n value=\"10172\">\n Jenkins (JENKINS)\n </option>\n <option data-icon=\"/secure/projectavatar?pid=10050&size=small\"\n title=\"test\"\n value=\"10050\">\n test (TEST)\n </option>\n </optgroup>\n </select>\n </div>\n \n\n","validSearcher":true,"isShown":true},"assignee":{"name":"Assignee","editHtml":"\n \n <div class=\"field-group aui-field-userlist\" >\n <label for=\"searcher-assigneeSelect\">Assignee</label> <fieldset rel=\"assignee\" class=\"hidden user-group-searcher-params\">\n </fieldset>\n <select class=\"js-usergroup-checkboxmultiselect\" multiple=\"multiple\" id=\"assignee\" name=\"assignee\" data-placeholder-text=\"Enter username or group\">\n <optgroup>\n <option class=\"headerOption\" data-icon=\"https://issues.jenkins.io/secure/useravatar?size=xsmall&avatarId=10293\" value=\"empty\" title=\"Unassigned\">Unassigned</option>\n </optgroup>\n <optgroup>\n </optgroup>\n </select>\n <input type=\"hidden\" name=\"check_prev_assignee\" value=\"true\">\n </div>\n \n","validSearcher":true,"isShown":true},"status":{"name":"Status","editHtml":"\n <div class=\"field-group aui-field-constants\" >\n <label for=\"searcher-status\">Status</label> <select class=\"select js-default-checkboxmultiselectstatuslozenge\"\n data-placeholder-text=\"Find Statuses...\"\n id=\"searcher-status\"\n multiple=\"multiple\"\n name=\"status\"\n data-max-inline-results-displayed=\"100\"\n data-footer-text=\"-88 more options. Continue typing to refine further.\" data-status-lozenge=\"true\">\n <optgroup >\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/needinfo.png\" value=\"10001\" title=\"Untriaged\" data-simple-status=\"{"id":"10001","name":"Untriaged","description":"New issue sits in this state until a developer agrees that this is a security issue","iconUrl":"/images/icons/statuses/needinfo.png","statusCategory":{"id":2,"key":"new","colorName":"default"}}\">Untriaged</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/open.png\" value=\"1\" title=\"Open\" data-simple-status=\"{"id":"1","name":"Open","description":"The issue is open and ready for the assignee to start work on it.","iconUrl":"/images/icons/statuses/open.png","statusCategory":{"id":2,"key":"new","colorName":"default"}}\">Open</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/inprogress.png\" value=\"3\" title=\"In Progress\" data-simple-status=\"{"id":"3","name":"In Progress","description":"This issue is being actively worked on at the moment by the assignee.","iconUrl":"/images/icons/statuses/inprogress.png","statusCategory":{"id":4,"key":"indeterminate","colorName":"inprogress"}}\">In Progress</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/reopened.png\" value=\"4\" title=\"Reopened\" data-simple-status=\"{"id":"4","name":"Reopened","description":"This issue was once resolved, but the resolution was deemed incorrect. From here issues are either marked assigned or resolved.","iconUrl":"/images/icons/statuses/reopened.png","statusCategory":{"id":4,"key":"indeterminate","colorName":"inprogress"}}\">Reopened</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/information.png\" value=\"10005\" title=\"In Review\" data-simple-status=\"{"id":"10005","name":"In Review","description":"","iconUrl":"/images/icons/statuses/information.png","statusCategory":{"id":4,"key":"indeterminate","colorName":"inprogress"}}\">In Review</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/resolved.png\" value=\"10002\" title=\"Fix Prepared\" data-simple-status=\"{"id":"10002","name":"Fix Prepared","description":"A fix is implemented and is waiting for the next security release","iconUrl":"/images/icons/statuses/resolved.png","statusCategory":{"id":4,"key":"indeterminate","colorName":"inprogress"}}\">Fix Prepared</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/generic.png\" value=\"10000\" title=\"Verified\" data-simple-status=\"{"id":"10000","name":"Verified","description":"Verified","iconUrl":"/images/icons/statuses/generic.png","statusCategory":{"id":4,"key":"indeterminate","colorName":"inprogress"}}\">Verified</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/generic.png\" value=\"10203\" title=\"Fixed but Unreleased\" data-simple-status=\"{"id":"10203","name":"Fixed but Unreleased","description":"This change has been implemented and merged, but not yet released.","iconUrl":"/images/icons/statuses/generic.png","statusCategory":{"id":3,"key":"done","colorName":"success"}}\">Fixed but Unreleased</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/resolved.png\" value=\"5\" title=\"Resolved\" data-simple-status=\"{"id":"5","name":"Resolved","description":"A developer had implemented a fix and is waiting for a feedback from the reporter.","iconUrl":"/images/icons/statuses/resolved.png","statusCategory":{"id":3,"key":"done","colorName":"success"}}\">Resolved</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/closed.png\" value=\"6\" title=\"Closed\" data-simple-status=\"{"id":"6","name":"Closed","description":"The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.","iconUrl":"/images/icons/statuses/closed.png","statusCategory":{"id":3,"key":"done","colorName":"success"}}\">Closed</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/open.png\" value=\"10003\" title=\"To Do\" data-simple-status=\"{"id":"10003","name":"To Do","description":"","iconUrl":"/images/icons/statuses/open.png","statusCategory":{"id":2,"key":"new","colorName":"default"}}\">To Do</option>\n <option class=\"imagebacked\" data-icon=\"/images/icons/statuses/closed.png\" value=\"10004\" title=\"Done\" data-simple-status=\"{"id":"10004","name":"Done","description":"","iconUrl":"/images/icons/statuses/closed.png","statusCategory":{"id":3,"key":"done","colorName":"success"}}\">Done</option>\n </optgroup>\n</select>\n </div>\n \n","validSearcher":true,"isShown":true},"labels":{"name":"Label","viewHtml":" <div class=\"searcherValue\">\n \n <label class=\"fieldLabel\" for=\"fieldlabels\">Label:</label><span id=\"fieldlabels\" class=\"fieldValue\">\n \n remoting3\n</span></div>\n","editHtml":"\n <div class=\"field-group aui-field-labels\" >\n <label for=\"searcher-labels\">Labels</label> <select class=\"js-label-checkboxmultiselect\" multiple=\"multiple\" id=\"searcher-labels\" name=\"labels\" data-placeholder-text=\"Find Labels...\">\n <option value=\"remoting3\" title=\"remoting3\" selected=\"selected\">remoting3</option>\n </select>\n </div>\n \n","jql":"labels = remoting3","validSearcher":true,"isShown":true}}}
[{"id":-1,"name":"My open issues","jql":"assignee = currentUser() AND resolution = Unresolved order by updated DESC","isSystem":true,"sharePermissions":[],"requiresLogin":true},{"id":-2,"name":"Reported by me","jql":"reporter = currentUser() order by created DESC","isSystem":true,"sharePermissions":[],"requiresLogin":true},{"id":-4,"name":"All issues","jql":"order by created DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false},{"id":-5,"name":"Open issues","jql":"resolution = Unresolved order by priority DESC,updated DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false},{"id":-9,"name":"Done issues","jql":"statusCategory = Done order by updated DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false},{"id":-3,"name":"Viewed recently","jql":"issuekey in issueHistory() order by lastViewed DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false},{"id":-6,"name":"Created recently","jql":"created >= -1w order by created DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false},{"id":-7,"name":"Resolved recently","jql":"resolutiondate >= -1w order by updated DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false},{"id":-8,"name":"Updated recently","jql":"updated >= -1w order by updated DESC","isSystem":true,"sharePermissions":[],"requiresLogin":false}]
Bug
Critical
Basil Crow
added a comment - 
oleg_nenashev thanks for the feedback.
Basically I've explained it all above already, so I try to give it some more detail.
I see 2 things here the one is the JDK which is required to run Jenkins master or the nodes and the JDK required to execute a job. This is very well solved for freestyle jobs, where I can even execute a JDK1.4 build with a recent Jenkins running on Java 8. But it is broken now with the maven job type (which I know is evil, not only for that reason). IMHO it is essential that the JDK that powers Jenkins in unrelated to the JDK that performs the build. We can build any old Visual Basic software but fail with a old Java maven build?
The maven plugin requires JDK1.6 and 1.7 since a long time - before the change to remoting 3.0. This is the reason why the maven plugin switches the execution JDK to the platform JDK and points compiler etc. to the old JDK (see the linked code change in my comment above). This switch now does not work any more and must be repaired to function again. The main question is why the root cause exception UnsupportedClassVersionError is not visible any more to the caller of Channel.call(...), and how we can make this visible again. If this is not possible there should be a other solution,
Please note that this issue will hit projects bound to Java 7 also, once Jenkins requires Java 8.