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https://issues.apache.org/jira/browse/LOG4J2-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14718136#comment-14718136
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Ralph Goers commented on LOG4J2-1098:
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Yup, I am sure. factory.addShutdownCallback checks the property and doesn't do
the add if it is set.
> log4j.shutdownHookEnabled=false from log4j-web ignored?
> -------------------------------------------------------
>
> Key: LOG4J2-1098
> URL: https://issues.apache.org/jira/browse/LOG4J2-1098
> Project: Log4j 2
> Issue Type: Bug
> Components: Web/Servlet
> Affects Versions: 2.3
> Reporter: Robin Jansohn
>
> In the documentation it says for the System Property
> 'log4j.shutdownHookEnabled':
> {quote}
> Overrides the global flag for whether or not a shutdown hook should be used
> to stop a LoggerContext. By default, this is enabled and can be disabled on a
> per-configuration basis. When running with the log4j-web module, this is
> automatically disabled.
> {quote}
> I included the log4j-web module into my Maven project so the shutdown hook
> should be disabled. During initialization I can see in the debug messages
> that this is not the case:
> {quote}
> DEBUG Starting LoggerContext\[name=31484215\] from configuration at null
> DEBUG Starting LoggerContext\[name=31484215,
> org.apache.logging.log4j.core.LoggerContext@1836523\] with configuration
> XmlConfiguration\[location=C:\app\apache-tomcat-8.0.24\wtpwebapps\webapp\WEB-INF\classes\log4j2.xml\]...
> DEBUG *Shutdown hook enabled. Registering a new one.*
> DEBUG Starting configuration
> XmlConfiguration\[location=C:\app\apache-tomcat-8.0.24\wtpwebapps\webapp\WEB-INF\classes\log4j2.xml\]
> \[...\]
> {quote}
> During shutdown (more specifically the contextDestroyed method of the
> ServletContextListener) I try to log some messages but the Logger is already
> shut down and therefore swallows all log messages (see LOG4J2-658).
> Do I need to do something else to disable the shutdown hook?
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