[JIRA] [core] (JENKINS-22525) A Slave disappears every time Jenkins boots up on IBM Java

Fri, 04 Jul 2014 06:56:26 -0700

 
Martin Kutter edited a comment on Bug JENKINS-22525

The ConversionException: Could not call hudson.EnvVars.readObject() : Invalid reference above is probably unrelated: It looks like my config had invalid references. After cleaning them up, this message disappeared.

However, the IncompatibleClassChangeError: incompatible InnerClasses attribute between "hudson.model.Queue$ItemList" and "hudson.model.Queue" could be the reason for this issue.

I reproduced the issue with Jenkins-1.656 with the following JDKs:

  • IBM JDK 6 SR 16 on AIX 7.1
  • IBM JDK 7 SR 6 on AIX 7.1
  • IBM JDK 7 SR 7 (latest). on AIX 7.1
  • IBM JDK 7 (build 2.6) on Windows.

In my case, the "missing" slave is always the first slave in the config.xml, so I would assume that loading a Slave from disk (and creating a hudsom.model.Queue$ItemList) does not work the first time,
but works on subsequent tries.

I've also found that the same error is thrown when creating a new slave on a fresh jenkins (on save / doCreateItem):

A problem occurred while processing the request. Please check our bug tracker to see if a similar problem has already been reported. If it is already reported, please vote and put a comment on it to let us gauge the impact of the problem. If you think this is a new issue, please file a new issue. When you file an issue, make sure to add the entire stack trace, along with the version of Jenkins and relevant plugins. The users list might be also useful in understanding what has happened.

 
Stack trace

javax.servlet.ServletException: java.lang.IncompatibleClassChangeError: incompatible InnerClasses attribute between "hudson.model.Queue$ItemList" and "hudson.model.Queue"
	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:778)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:858)
	at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:210)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:728)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:858)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:631)



The slave is saved nonetheless. 



Subsequent slaves can be created without this error.
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