[jira] [Comment Edited] (LOG4J2-493) NPE in AsyncLogger.shutdown

["Remko Popma (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867421#comment-13867421 ] 

Remko Popma edited comment on LOG4J2-493 at 1/10/14 2:02 AM:
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Can you please specify what minor version of Tomcat 7 you are using?
Also, do you have a single log4j2.xml configuration file shared by all web applications or a separate configuration for each web application?


was (Author: remkop@yahoo.com):
Can you please specify what minor version of Tomcat 7 you are using?

> NPE in AsyncLogger.shutdown
> ---------------------------
>
>                 Key: LOG4J2-493
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-493
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.0-beta9
>         Environment: tomcat 7
>            Reporter: Kireet Reddy
>
> When redeploying my application in tomcat multiple times, I get an exception:
> Exception in thread "Thread-29" java.lang.NullPointerException
>         at org.apache.logging.log4j.core.async.AsyncLogger.stop(AsyncLogger.java:249)
>         at org.apache.logging.log4j.core.async.AsyncLoggerContext.stop(AsyncLoggerContext.java:56)
>         at org.apache.logging.log4j.core.LoggerContext$ShutdownThread.run(LoggerContext.java:437)
> This seems to be due to the fact that some initialization code happens in the class initializer but is undone in the stop() method which is called during webapp undeployment. This causes issues because in this case the log4j jar is loaded by the shared classloader ($catalina.home/lib) rather than the webapp classloader. This means the AsyncLogger class is not re-created during webapp deployment. 
> I am using this structure because I have many 3rd party libraries and want to keep redeployments lightweight. 



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