Multi-configuration project fails to load after Jenkins 2 upgrade

[Gavin Williams]

Afternoon all

I've just upgraded one of our Jenkins hosts from 1.6 to 2.18, and unfortunately it appears to have broken some of our Multi-configuration projects. 

Upon restarting Jenkins, the following is logged:

SEVERE: Failed Loading job Microservice_Matrix_Unit
java.lang.NullPointerException
        at hudson.matrix.MatrixProject.createTransientActions(MatrixProject.java:450)
        at hudson.model.AbstractProject.updateTransientActions(AbstractProject.java:756)
        at hudson.matrix.MatrixProject.updateTransientActions(MatrixProject.java:460)
        at hudson.model.AbstractProject.onLoad(AbstractProject.java:340)
        at hudson.matrix.MatrixProject.onLoad(MatrixProject.java:501)
        at hudson.model.Items.load(Items.java:333)
        at jenkins.model.Jenkins$17.run(Jenkins.java:2942)
        at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
        at jenkins.model.Jenkins$7.runTask(Jenkins.java:1026)
        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

I've not found anything of any use whilst googling... 

Any ideas on how I can fix the jobs?

Regards

Gavin  

[Gavin Williams]

Just to confirm, I hit exactly the same error on a fresh Jenkins 2 installation... 

Anyone hit anything similar?

Cheers

Gavin 

[Daniel Beck]

What versions of Jenkins and the Matrix Project plugin is this?

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[Gavin Williams]

The latest occurrence on a fresh install with latest of everything is:

* Jenkins: 2.7.2

* Matrix Project plugin: 1.7.1

Cheers

Gavin 

[Daniel Beck]

Please provide the config.xml of the affected job. It seems to be invalid.

Maybe a plugin is failing to load. Anything in the logs, or on /manage?

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[Gavin Williams]

Daniel

An example config.xml is here: https://gist.github.com/fatmcgav/19660174fed68f9df6c70797f079bc72

Nothing obvious in the logs, and some complaints about 'Unreadable Data'. 

A couple of lines corresponding to this project:

hudson.model.FreeStyleProject	Unit_4	NoSuchMethodError: org.jruby.RubyClass.getVariableAccessorForWrite(Ljava/lang/String;)Lorg/jruby/RubyClass$VariableAccessor;, InstantiationError: null, MissingFieldException: No field 'pluginid' found in class 'hudson.model.FreeStyleProject'
hudson.model.FreeStyleProject	Unit_4	NoSuchMethodError: org.jruby.RubyClass.getVariableAccessorForWrite(Ljava/lang/String;)Lorg/jruby/RubyClass$VariableAccessor;, InstantiationError: null, MissingFieldException: No field 'pluginid' found in class 'hudson.model.FreeStyleProject'

From a plugins POV, I'm using:

* RVM

* Build Name Setter

* EnvInjector

* Git

Plus a few others that probably aren't relevant.. 

Cheers

Gavin 

[Gavin Williams]

Ah, actually, apologies, I got this issue mixed up with another one I'm currently having... 

Yes, there is an error in the logs for the Multi-Configuration project. 

Aug 23, 2016 3:59:58 PM jenkins.InitReactorRunner$1 onTaskFailed

SEVERE: Failed Loading job Microservice_Matrix_Unit
java.lang.NullPointerException
        at hudson.matrix.MatrixProject.createTransientActions(MatrixProject.java:450)

        at hudson.model.AbstractProject.updateTransientActions(AbstractProject.java:755)
        at hudson.matrix.MatrixProject.updateTransientActions(MatrixProject.java:460)
        at hudson.model.AbstractProject.onLoad(AbstractProject.java:339)

        at hudson.matrix.MatrixProject.onLoad(MatrixProject.java:501)
        at hudson.model.Items.load(Items.java:333)

        at jenkins.model.Jenkins$17.run(Jenkins.java:2823)

        at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)

        at jenkins.model.Jenkins$7.runTask(Jenkins.java:998)

        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

I've just ditched the Project config unfortunately though, so let me see if I can re-create... 

Cheers

Gavin  

[Daniel Pflager]

We had something similar. Jenkins 2.7.3. After some experimentation, I found that adding the empty tag:

<buildWrappers/>

right before the executionStrategy tag at the end of the config.xml, like this:

.

.

.

  <buildWrappers/>
  <executionStrategy class="hudson.matrix.DefaultMatrixExecutionStrategyImpl">
    <runSequentially>false</runSequentially>
  </executionStrategy>
</matrix-project>

and then reloading configuration from disk fixed the problem. The matrix job now loaded.