Kireet Reddy created LOG4J2-493:
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Summary: 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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