Radoslav Ivanov created GROOVY-8217:
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             Summary: java.lang.ClassNotFoundException: java$lang$Enum
                 Key: GROOVY-8217
                 URL: https://issues.apache.org/jira/browse/GROOVY-8217
             Project: Groovy
          Issue Type: Bug
          Components: groovy-runtime
    Affects Versions: 2.4.8
            Reporter: Radoslav Ivanov
            Priority: Critical


Hi guys

It looks like we are hitting pretty rare but severe problem [2]. Note that 
restart fixed the problem as it was also suggested here [1].

Regards
Rado

Details
1. 
https://stackoverflow.com/questions/40854472/java-lang-classnotfoundexception-java-langenum-in-jenkins-2-0-while-executing
2. Caused by: java.lang.TypeNotPresentException: Type java$lang$Enum not present
        at 
sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117)
 [rt.jar:1.8.0_112]
        at 
sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125) 
[rt.jar:1.8.0_112]
        at 
sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) 
[rt.jar:1.8.0_112]
        at 
sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:90)
 [rt.jar:1.8.0_112]
        at java.lang.Class.getGenericSuperclass(Class.java:777) 
[rt.jar:1.8.0_112]
        at 
com.sun.beans.finder.MethodFinder.findAccessibleMethod(MethodFinder.java:151) 
[rt.jar:1.8.0_112]
        at 
java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1344) 
[rt.jar:1.8.0_112]
        at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1197) 
[rt.jar:1.8.0_112]
        at java.beans.Introspector.getBeanInfo(Introspector.java:426) 
[rt.jar:1.8.0_112]
        at java.beans.Introspector.getBeanInfo(Introspector.java:173) 
[rt.jar:1.8.0_112]
        at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:3313) 
[groovy-2.4.8.jar:2.4.8]
        at java.security.AccessController.doPrivileged(Native Method) 
[rt.jar:1.8.0_112]
        at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:3311) 
[groovy-2.4.8.jar:2.4.8]
        at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:3288) 
[groovy-2.4.8.jar:2.4.8]
        at 
org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:271)
 [groovy-2.4.8.jar:2.4.8]
        at 
org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:313) 
[groovy-2.4.8.jar:2.4.8]
        at 
org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:258)
 [groovy-2.4.8.jar:2.4.8]
        at 
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.selectConstructorAndTransformArguments(ScriptBytecodeAdapter.java:236)
 [groovy-2.4.8.jar:2.4.8]
        ... 11 more
Caused by: java.lang.ClassNotFoundException: java$lang$Enum
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
[rt.jar:1.8.0_112]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
[rt.jar:1.8.0_112]
        at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:677) 
[groovy-2.4.8.jar:2.4.8]
        at 
groovy.lang.GroovyClassLoader$InnerLoader.loadClass(GroovyClassLoader.java:425) 
[groovy-2.4.8.jar:2.4.8]
        at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:787) 
[groovy-2.4.8.jar:2.4.8]
        at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:775) 
[groovy-2.4.8.jar:2.4.8]
        at java.lang.Class.forName0(Native Method) [rt.jar:1.8.0_112]
        at java.lang.Class.forName(Class.java:348) [rt.jar:1.8.0_112]
        at 
sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
 [rt.jar:1.8.0_112]
        ... 30 more



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