LogFactory not released when reloading WebApp
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Key: AXIS-2229
URL: http://issues.apache.org/jira/browse/AXIS-2229
Project: Apache Axis
Type: Bug
Components: Basic Architecture
Versions: 1.2.1
Environment: Windows XP, Tomcat 5.0.x
Reporter: Manfred Hantschel
If you have a WebApp that contains all the axis libs in the WEB-INF/lib
directory (including the commons-logging.jar) the WebAppClassLoader will not be
fully removed when you stop the application.
I assume that this problem is caused by a missing LogFactory.release(). I have
tried to patch the 1.2.1 version of axis by adding a destroy method to the Axis
servlet that calls the release method, but that didn't hit the spot.
You can check this url for a description:
http://jakarta.apache.org/commons/logging/guide.html#Classloader%20and%20Memory%20Management
The bug is quite hard to detect. You may need a tool like JProfiler and e.g.
Servlet with a static reference to itself. When Axis is loaded it registers
some class outside it's own classloader, which i assume is the LogFactory. When
the Webapp is stopped it usually throws the Classloader away, but the reference
outside of this classloader keeps the reference and it wont get garbage
collected.
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