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https://issues.apache.org/jira/browse/LOG4J2-1467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15390252#comment-15390252
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Ralph Goers commented on LOG4J2-1467:
-------------------------------------

Your last sentence is key.  The whole point of LoaderUtil is so the caller 
doesn't have to determine what ClassLoader to use.

> OSGi: Missing import package
> ----------------------------
>
>                 Key: LOG4J2-1467
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1467
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: API
>    Affects Versions: 2.6.2
>         Environment: Enterprise OSGi application
>            Reporter: Ralf
>
> The Import-Package statement in log4j-api-2.6.2.jar is missing the package 
> "org.apache.logging.log4j.core.lookup". This results in the following log 
> output while starting a enterprise OSGi application:
> Blueprint Extender: 3 WARN JNDI lookup class is not available because this 
> JRE does not support JNDI. JNDI string lookups will not be available, 
> continuing configuration. java.lang.ClassNotFoundException: 
> org.apache.logging.log4j.core.lookup.JndiLookup
>         at java.lang.Class.forName(Class.java:256)
>         at 
> org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:122)
>         at 
> org.apache.logging.log4j.util.LoaderUtil.newInstanceOf(LoaderUtil.java:141)
>         at 
> org.apache.logging.log4j.util.LoaderUtil.newCheckedInstanceOf(LoaderUtil.java:168)
>         at 
> org.apache.logging.log4j.core.util.Loader.newCheckedInstanceOf(Loader.java:301)
>         at 
> org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:95)
>         at 
> org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:116)
> and
> Blueprint Extender: 3 WARN JMX runtime input lookup class is not available 
> because this JRE does not support JMX. JMX lookups will not be available, 
> continuing configuration. java.lang.ClassNotFoundException: 
> org.apache.logging.log4j.core.lookup.JmxRuntimeInputArgumentsLookup
>    (Stacktrace like above)
> As local fix I added 'DynamicImport-Package: *' to the MANIFEST.MF. 



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