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

Mon, 07 Jul 2014 03:39:23 -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 1.554.3 (LTS), 1.565 and 1.570 with the following combinations.

  • Jenkins 1.565 on IBM JDK 6 SR 16 on AIX 7.1
  • Jenkins 1.565 on IBM JDK 7 SR 6 on AIX 7.1
  • Jenkins 1.565 on IBM JDK 7 SR 7 (latest) on AIX 7.1
  • Jenkins 1.554.3 on IBM JDK 7 (build 2.6) on Windows 7
  • Jenkins 1.565 on IBM JDK 7 (build 2.6) on Windows 7
  • Jenkins 1.570 on IBM JDK 7 (build 2.6) on Windows 7
  • Jenkins 1.570 (re-built from source on IBM JDK 6) on IBM JDK 6 on Windows 7

The issue does not occur on Jenkins-1.532.2 (LTS).

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 the first slave node on a fresh jenkins instance (on save / doCreateItem):

 
Stack trace (excerpt):

Caused by: java.lang.IncompatibleClassChangeError: incompatible InnerClasses attribute between "hudson.model.Queue$ItemList" and "hudson.model.Queue"
	at java.lang.Class.getDeclaringClass(Class.java:821)
	at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.<init>(ParameterizedTypeImpl.java:52)
	at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.make(ParameterizedTypeImpl.java:95)
	at sun.reflect.generics.factory.CoreReflectionFactory.makeParameterizedType(CoreReflectionFactory.java:105)
	at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:140)
	at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
	at sun.reflect.generics.repository.FieldRepository.getGenericType(FieldRepository.java:85)
	at java.lang.reflect.Field.getGenericType(Field.java:237)
	at com.thoughtworks.xstream.mapper.AnnotationMapper.processTypes(AnnotationMapper.java:224)
	at com.thoughtworks.xstream.mapper.AnnotationMapper.processAnnotations(AnnotationMapper.java:182)
	at com.thoughtworks.xstream.mapper.AnnotationMapper.serializedClass(AnnotationMapper.java:129)
	at hudson.util.xstream.MapperDelegate.serializedClass(MapperDelegate.java:39)
	at com.thoughtworks.xstream.mapper.MapperWrapper.serializedClass(MapperWrapper.java:26)
	at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:62)
	at hudson.slaves.NodeList$ConverterImpl.marshal(NodeList.java:151)

The slave is saved nonetheless.

Subsequent slaves can be created without this error.
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