Hi,

I ran into some weird LinkageErrors with JAXB classes and I have no
clue what is causing this. I'm hoping somebody might have some ideas
how to deal with it. The most interesting thing is that these errors
are logged but don't actually cause any problems. Also, I see these
errors when I build the framework from the top but not if I build the
framework/assemblies separately.

[main] DEBUG com.sun.xml.bind.v2.runtime.reflect.opt.Injector - Unable
to inject 
org/apache/geronimo/system/plugin/model/AttributesType$JaxbAccessorF_comment
java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at 
com.sun.xml.bind.v2.runtime.reflect.opt.Injector.inject(Injector.java:181)
        at 
com.sun.xml.bind.v2.runtime.reflect.opt.Injector.inject(Injector.java:85)
        at 
com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(AccessorInjector.java:87)
        at 
com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:165)
        at 
com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize(Accessor.java:253)
        at 
com.sun.xml.bind.v2.runtime.property.SingleElementLeafProperty.<init>(SingleElementLeafProperty.java:81)
        at sun.reflect.GeneratedConstructorAccessor97.newInstance(Unknown 
Source)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at 
com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:124)
        at 
com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:171)
        at 
com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:481)
        at 
com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:315)
        at 
com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:139)
        at 
com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:117)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:202)
        at javax.xml.bind.ContextFinder.find(ContextFinder.java:363)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:522)
        at 
org.apache.geronimo.system.configuration.AttributesXmlUtil.<clinit>(AttributesXmlUtil.java:57)
        at 
org.apache.geronimo.system.configuration.GBeanOverride.<init>(GBeanOverride.java:191)
        at 
org.apache.geronimo.system.configuration.LocalAttributeManager.setModuleGBeans(LocalAttributeManager.java:239)
        at 
org.apache.geronimo.system.plugin.PluginInstallerGBean.installConfigXMLData(PluginInstallerGBean.java:1776)
        at 
org.apache.geronimo.system.plugin.PluginInstallerGBean.downloadArtifact(PluginInstallerGBean.java:1330)
        at 
org.apache.geronimo.system.plugin.PluginInstallerGBean.downloadArtifact(PluginInstallerGBean.java:1309)
        at 
org.apache.geronimo.system.plugin.PluginInstallerGBean.install(PluginInstallerGBean.java:774)
        at 
org.apache.geronimo.system.plugin.PluginInstallerGBean.install(PluginInstallerGBean.java:719)
        at 
org.apache.geronimo.mavenplugins.car.InstallModulesMojo.execute(InstallModulesMojo.java:184)
        at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at 
org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: java.lang.LinkageError: loader (instance of
org/codehaus/classworlds/RealmClassLoader): attempted  duplicate class
definition for name:
"org/apache/geronimo/system/plugin/model/AttributesType$JaxbAccessorF_comment"
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
        ... 54 more

Jarek

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