[JENKINS-27741] Jenkins fails to report gerrit notifications spontaneously and on restart.

A jenkins server which was communicating properly with gerrit, suddenly stops reporting both "Build Started" and build success or failure back to gerrit.

In an attempt to resolve, jenkins is restarted. Upon restart, the problem persists and this error message is seen in the jenkins log -

Apr 03, 2015 10:27:34 AM com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.actions.manual.ManualTriggerAction getServerConfig

SEVERE: Could not find server null

While the jenkins server is in this state, the gerrit server status shows as green under https://myjenkins/gerrit-trigger/ and the test connection button under https://myjenkins/gerrit-trigger/server/defaultServer/ reports success.

Also during this failure, the retrigger links vanish from gerrit verifier builds. Screenshot attached.

The problem went away after a second jenkins restart. After this restart, new gerrit builds show the retrigger links, but one which were run during the period of failure still don't show them.

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Originally reported by csanders, imported from: Jenkins fails to report gerrit notifications spontaneously and on restart.

• assignee: rsandell
  
• status: Open
  
• priority: Major
  
• component(s): gerrit-trigger-plugin
  
• resolution: Unresolved
  
• votes: 5
  
• watchers: 8
  
• imported: 2025-12-06
  

Raw content of original issue

A jenkins server which was communicating properly with gerrit, suddenly stops reporting both "Build Started" and build success or failure back to gerrit.


In an attempt to resolve, jenkins is restarted. Upon restart, the problem persists and this error message is seen in the jenkins log - 


Apr 03, 2015 10:27:34 AM com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.actions.manual.ManualTriggerAction getServerConfig

SEVERE: Could not find server null


While the jenkins server is in this state, the gerrit server status shows as green under https://myjenkins/gerrit-trigger/ and the test connection button under https://myjenkins/gerrit-trigger/server/defaultServer/ reports success. 


Also during this failure, the retrigger links vanish from gerrit verifier builds. Screenshot attached.


The problem went away after a second jenkins restart. After this restart, new gerrit builds show the retrigger links, but one which were run during the period of failure still don't show them.

environment

```
Jenkins 1.596.1 (LTS)

Gerrit 2.10.1

Gerrit Trigger Plugin 2.12.0

All running on Ubuntu 12.0
```

2 attachments

- [gerrit-trigger-bug.txt](https://issues.jenkins.io/secure/attachment/29892/gerrit-trigger-bug.txt)
- [missing_retrigger.png](https://issues.jenkins.io/secure/attachment/29104/missing_retrigger.png)
> 

Start with com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.actions.manual.ManualTriggerAction#getServerConfig and the reported "Could not find server null" log entry. Reproduce the failure around restart and inspect how the configured defaultServer is resolved; done means build notifications and retrigger links continue working after restart.

Written by the indexing model from the issue text.