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https://issues.apache.org/jira/browse/LOG4J2-3394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17487505#comment-17487505
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Carter Kozak commented on LOG4J2-3394:
--------------------------------------

I see, the properties-specific configuration handling is evaluated prior to 
lookups, which means the raw value including the raw lookup is interpreted as a 
level. I think this is a strong counterexample against format-specific 
configuration handling, as it can conflict with assumptions we make elsewhere. 
I wonder if there’s a more general solution we can use to implement this 
feature?

> The 'rootLogger=${sys:root.logger:-INFO,console}' does not work
> ---------------------------------------------------------------
>
>                 Key: LOG4J2-3394
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-3394
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Configuration
>            Reporter: Duo Zhang
>            Priority: Major
>         Attachments: log4j2.err, log4j2.properties
>
>
> Tried the new feature introduced in LOG4J2-3341 in hbase.
> https://github.com/apache/hbase/pull/4096
> I built a tarball and try to start a standalone hbase instance locally, but 
> log4j2 failed to load the system properties of rootLogger.
> Will upload the config and error output.



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