Reverse Build Trigger: NullPointerException

[Sverre Moe]

Using Jenkins 1.626

I have configured 19 projects with a reverse build trigger "Build after other projects are built".

After building the upstream project, these 19 projects (minus those disabled) should be triggered as well.

I have rechecked the configuration for every downstream projects. They look fine. I have even re-saved all those projects.

My projects are all multi-configuration jobs.

Still I am getting a NullPointerException for one of the downstream projects:

Warning: you have no plugins providing access control for builds, so falling back to legacy behavior of permitting any downstream builds to be triggered
Triggering a new build of project2
project3 is disabled. Triggering skipped
project4 is disabled. Triggering skipped
Triggering a new build of project5
Triggering a new build of project6
Triggering a new build of project7
Triggering a new build of project8
FATAL: null
java.lang.NullPointerException
        at jenkins.triggers.ReverseBuildTrigger.shouldTrigger(ReverseBuildTrigger.java:111)
        at jenkins.triggers.ReverseBuildTrigger.access$000(ReverseBuildTrigger.java:84)
        at jenkins.triggers.ReverseBuildTrigger$1.shouldTriggerBuild(ReverseBuildTrigger.java:141)
        at hudson.tasks.BuildTrigger.execute(BuildTrigger.java:245)
        at hudson.model.AbstractBuild$AbstractBuildExecution.cleanUp(AbstractBuild.java:687)
        at hudson.model.Run.execute(Run.java:1788)
        at hudson.matrix.MatrixBuild.run(MatrixBuild.java:301)
        at hudson.model.ResourceController.execute(ResourceController.java:98)
        at hudson.model.Executor.run(Executor.java:381)
Finished: SUCCESS

It is impossible to find out which project it has a problem with, among the total 19 downstream projects.

There are many reported bugs on this matter, most Closed and resolved:

https://issues.jenkins-ci.org/browse/JENKINS-23191

https://issues.jenkins-ci.org/browse/JENKINS-25758

https://issues.jenkins-ci.org/browse/JENKINS-23686

The configuration for alle downstream projects look the same

    <jenkins.triggers.ReverseBuildTrigger>
      <spec></spec>
      <upstreamProjects>project1</upstreamProjects>
      <threshold>
        <name>SUCCESS</name>
        <ordinal>0</ordinal>
        <color>BLUE</color>
        <completeBuild>true</completeBuild>
      </threshold>
    </jenkins.triggers.ReverseBuildTrigger>


I have even tried restarting Jenkins, but that didn't work.

[Sverre Moe]

I have taken a look into the code of ReverseBuildTrigger where the NullPointerException happens:

111 boolean downstreamVisible = jenkins.getItemByFullName(job.getFullName()) == job;

But still no closer to the solution...

It looks like the problem lies with authentication.

[Sverre Moe]

I had 3 downstream projects which was disabled. Two of them caused no trouble, because it just skipped them

project3 is disabled. Triggering skipped

When I removed the upstream project from each disabled downstream projects reverse build trigger, then everything worked fine.

fredag 28. august 2015 12.54.11 UTC+2 skrev Sverre Moe følgende:

[Sverre Moe]

I don't understand what the problem is, but it is happening again, and none of the projects are disabled this time.

[Sverre Moe]

I found an active bug report that is relevant for my problem

https://issues.jenkins-ci.org/browse/JENKINS-29807