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https://issues.apache.org/jira/browse/LOG4J2-3394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17488438#comment-17488438
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Matt Sicker commented on LOG4J2-3394:
-------------------------------------
Based on existing extension points, a custom ConfigurationFactory could
theoretically be introduced at any time since 2.0. That's how programmatic
configuration typically works, too (setting a custom factory with your
configuration builder class).
The CompoundProperty concept might work, though it smells like slowly
introducing another type of expression language in the config file format.
> 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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