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https://issues.apache.org/jira/browse/LOG4J2-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16729132#comment-16729132
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Ralph Goers commented on LOG4J2-2266:
-------------------------------------
That is OK. What does your custom Classloader do? The fix that was added
specifies to use the ClassLoader of the PropertySource class. That will be the
ClassLoader that logged Log4j. I suspect that that isn't good enough as the
properties might be provided by a different ClassLoader.
> Log4j2 throws NoClassDefFoundError in Java 8
> --------------------------------------------
>
> Key: LOG4J2-2266
> URL: https://issues.apache.org/jira/browse/LOG4J2-2266
> Project: Log4j 2
> Issue Type: Bug
> Affects Versions: 2.10.0
> Reporter: Andrejus Chaliapinas
> Priority: Major
>
> During Unit Tests run using JDK 8 and Log4j2 v2.10.0 - getting this as part
> of exception stack:
>
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.logging.log4j.util.PropertiesUtil
> at
> org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.java:71)
> at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:60)
>
> and issue seems to be somehow related to what is reported so far against JDK
> 9 here: LOG4J2-2129.
>
> If some patch on top of v2.10.0 is available to test - please let me know
> where to download it from.
>
> While running same UTs with same JDK 8 and v2.8.2 - issue is not observed.
>
> And question which I have here - why not introduce JDK8 compatibility runtime
> mode while things with JDK9 are not yet that stable? So it could continue use
> same logic as of v2.8.2 around that ServiceLoader and not cause side effects.
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