https://issues.apache.org/bugzilla/show_bug.cgi?id=48510
Summary: Memory leak after undeploying web application using
custom log formatter
Product: Tomcat 6
Version: 6.0.20
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=24819)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=24819)
Zipped Maven project folder
After undeploying web application (see attachment) instance of CustomFormatter
is left non-reclaimed. As CustomFormatter is loaded by WebAppClassLoader, the
classloader remains in memory too.
To reproduce: deploy attached web application and stop/start it several times,
then do a heap dump. Check the dump using Eclipse Memory Analyzer or YourKit
Java Profiler and notice multiple WebAppClassLoaders present in the dump.
Issue seems to be related to org.apache.juli.ClassLoaderLogManager.
org.apache.juli.ClassLoaderLogManager$LogNode keeps a reference to
java.util.logging.Logger. Logger has a handler with CustomFormatter.
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