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From "Daniel Kulp (JIRA)" <>
Subject [jira] Commented: (CXF-2624) Classloader leakage in org.apache.cxf.common.util.ASMHelper.LOADER_MAP
Date Tue, 19 Jan 2010 16:50:54 GMT


Daniel Kulp commented on CXF-2624:

Changing the WeakIdentityHashMap is not really what we want to do as it's used (indirectly)
in a bunch of places where we may not want the value held by a weak reference.   

In anycase, this is now fixed for 2.2.6 as I've changed the ASMHelper to use:
new WeakIdentityHashMap<Class<?>, WeakReference<TypeHelperClassLoader>>()

So both key and value are held weakly.

> Classloader leakage in org.apache.cxf.common.util.ASMHelper.LOADER_MAP
> ----------------------------------------------------------------------
>                 Key: CXF-2624
>                 URL:
>             Project: CXF
>          Issue Type: Bug
>          Components: JAXB Databinding
>    Affects Versions: 2.1.5
>            Reporter: Daniel Feist
>             Fix For: 2.1.9, 2.2.6
>         Attachments:
> See:
> This map continues to have reference to classes generated and used by the now undeployed
webapp meaning the webapp classloader never goes  away. 
> The implementation of this map although weak is not weak enough,  because if a entry
references a key (it seems to) then the key although it is a WeakReference never goes away
and therefore neither does the entry (the classloader). 
> See the "implementation note" 2/3 of the way through the javadoc here:

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