[JENKINS-74991] Notify-error: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null

[jenkins-infra-bot]

Seeing this error in Jenkins log when Gerrit patchset is created. We have been using Gerrit & Jenkins with gerrit-trigger for a long time, but now testing upgrade to Gerrit 3.9.5 from 3.7.6 and also upgraded Jenkins gerrit-trigger plugin from 2.40.0.

2024-12-12 15:48:49.712+0000 [id=4142] SEVERE c.s.t.g.g.GerritHandler#notifyListeners: When notifying listener: com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.EventListener@​b0fcb3da about event: PatchsetCreated: Change-Id for #151678: I5279e3bab326da008c52c0cfd820fe01405719d1 PatchSet: 4
2024-12-12 15:48:49.712+0000 [id=4142] SEVERE c.s.t.g.g.GerritHandler#notifyListeners: Notify-error:
java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
at java.base/java.util.ArrayList.<init>(ArrayList.java:181)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.data.GerritProject.isInterestingFile(GerritProject.java:337)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.data.GerritProject.isInteresting(GerritProject.java:278)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTrigger.isChangeInteresting(GerritTrigger.java:956)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTrigger.isChangeBasedEventInteresting(GerritTrigger.java:1049)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTrigger.isInteresting(GerritTrigger.java:1165)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.EventListener.gerritEvent(EventListener.java:128)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler.notifyListener(GerritHandler.java:592)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler.notifyListeners(GerritHandler.java:559)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.JenkinsAwareGerritHandler.notifyListeners(JenkinsAwareGerritHandler.java:80)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.workers.AbstractGerritEventWork.perform(AbstractGerritEventWork.java:46)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.workers.AbstractJsonObjectWork.perform(AbstractJsonObjectWork.java:77)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.workers.StreamEventsStringWork.perform(StreamEventsStringWork.java:74)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler$EventWorker.workEvent(GerritHandler.java:337)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler$EventWorker.run(GerritHandler.java:319)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:842)

---

Originally reported by jimsearle, imported from: Notify-error: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null

• assignee: rsandell
• status: Open
• priority: Blocker
• component(s): gerrit-trigger-plugin
• resolution: Unresolved
• votes: 0
• watchers: 2
• imported: 2025-12-07

Raw content of original issue

Seeing this error in Jenkins log when Gerrit patchset is created.  We have been using Gerrit & Jenkins with gerrit-trigger for a long time, but now testing upgrade to Gerrit 3.9.5 from 3.7.6 and also upgraded Jenkins gerrit-trigger plugin from 2.40.0.


2024-12-12 15:48:49.712+0000 [id=4142] SEVERE c.s.t.g.g.GerritHandler#notifyListeners: When notifying listener: com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.EventListener@b0fcb3da about event: PatchsetCreated: Change-Id for #151678: I5279e3bab326da008c52c0cfd820fe01405719d1 PatchSet: 4
2024-12-12 15:48:49.712+0000 [id=4142] SEVERE c.s.t.g.g.GerritHandler#notifyListeners: Notify-error:
java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
at java.base/java.util.ArrayList.<init>(ArrayList.java:181)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.data.GerritProject.isInterestingFile(GerritProject.java:337)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.data.GerritProject.isInteresting(GerritProject.java:278)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTrigger.isChangeInteresting(GerritTrigger.java:956)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTrigger.isChangeBasedEventInteresting(GerritTrigger.java:1049)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTrigger.isInteresting(GerritTrigger.java:1165)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.EventListener.gerritEvent(EventListener.java:128)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler.notifyListener(GerritHandler.java:592)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler.notifyListeners(GerritHandler.java:559)
at PluginClassLoader for gerrit-trigger//com.sonyericsson.hudson.plugins.gerrit.trigger.JenkinsAwareGerritHandler.notifyListeners(JenkinsAwareGerritHandler.java:80)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.workers.AbstractGerritEventWork.perform(AbstractGerritEventWork.java:46)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.workers.AbstractJsonObjectWork.perform(AbstractJsonObjectWork.java:77)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.workers.StreamEventsStringWork.perform(StreamEventsStringWork.java:74)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler$EventWorker.workEvent(GerritHandler.java:337)
at PluginClassLoader for gerrit-trigger//com.sonymobile.tools.gerrit.gerritevents.GerritHandler$EventWorker.run(GerritHandler.java:319)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:842)

environment

Gerrit Trigger Version 2.42.0<br/>
Jenkins 2.462.1<br/>
Gerrit 3.9.5

[jenkins-infra-bot]

jimsearle:

• Comment link
• Original comment link (no redirect)
• Raw content of original comment:

  I downgraded the gerrit-trigger plugin on our Jenkins test instance to the same one we are using on the production instance 2.40.0 and that fixed this issue.
  

I downgraded the gerrit-trigger plugin on our Jenkins test instance to the same one we are using on the production instance 2.40.0 and that fixed this issue.

[jenkins-infra-bot]

strosin02:

• Comment link
• Original comment link (no redirect)
• Raw content of original comment:

  If you run into similar errors in the future, checking plugin compatibility with your Jenkins version can save you a lot of troubleshooting time.
  

If you run into similar errors in the future, checking plugin compatibility with your Jenkins version can save you a lot of troubleshooting time.