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https://issues.apache.org/jira/browse/LOG4J2-377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13754773#comment-13754773
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Ralph Goers commented on LOG4J2-377:
------------------------------------
I'm not sure what is going on there but the easy way to address this would be
to declare a static Configuration in LoggerContext that is set to a
NullConfiguration. Then during stop instead of doing a new just set the
configuration to point to the static NullConfiguration.
Is it possible you could give that a try and see if it solves the problem?
> NPE during shutdown.
> --------------------
>
> Key: LOG4J2-377
> URL: https://issues.apache.org/jira/browse/LOG4J2-377
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0-beta9
> Environment: OSGi R5 / R4 (Apache Felix 4.x)
> Reporter: Roland Weiglhofer
> Priority: Critical
>
> NPE in Log4j2-core during shutdown.
> g! Exception in thread "Thread-2" java.lang.NullPointerException
> at
> org.apache.felix.framework.BundleWiringImpl.diagnoseClassLoadError(BundleWiringImpl.java:2625)
> at
> org.apache.felix.framework.BundleWiringImpl.access$700(BundleWiringImpl.java:75)
> at
> org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1967)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at
> org.apache.logging.log4j.core.LoggerContext.stop(LoggerContext.java:210)
> at
> org.apache.logging.log4j.core.LoggerContext$ShutdownThread.run(LoggerContext.java:437)
> Exception in thread "Thread-6" java.lang.NullPointerException
> at
> org.apache.felix.framework.BundleWiringImpl.diagnoseClassLoadError(BundleWiringImpl.java:2625)
> at
> org.apache.felix.framework.BundleWiringImpl.access$700(BundleWiringImpl.java:75)
> at
> org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1967)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at
> org.apache.logging.log4j.core.LoggerContext.stop(LoggerContext.java:210)
> at
> org.apache.logging.log4j.core.LoggerContext$ShutdownThread.run(LoggerContext.java:437)
> It's a ClassLoader-issue. I guess that log4j2-core uses the
> bootstrap-classloader but not the bundle-classloaer.
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