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https://issues.apache.org/jira/browse/SLING-6258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15654207#comment-15654207
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Felix Meschberger commented on SLING-6258:
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[~radu.cotescu] From what I can tell, this looks good, yes. Thanks.

> The PackageAdminClassLoader cannot load classes from bundles providing older 
> API versions
> -----------------------------------------------------------------------------------------
>
>                 Key: SLING-6258
>                 URL: https://issues.apache.org/jira/browse/SLING-6258
>             Project: Sling
>          Issue Type: Bug
>          Components: Commons
>    Affects Versions: Commons ClassLoader 1.3.2
>            Reporter: Radu Cotescu
>            Assignee: Radu Cotescu
>             Fix For: Commons ClassLoader 1.3.6
>
>
> The {{org.apache.sling.commons.classloader.impl.PackageAdminClassLoader}} 
> cannot correctly load classes that exist only in bundles providing older API 
> implementations if another bundle providing the same API, but newer version, 
> exists on the instance.
> Assuming bundles A and B both export {{org.example}}, A with version 
> {{1.0.0}} and B with version {{2.0.0}}, when the 
> {{org.apache.sling.commons.classloader.impl.PackageAdminClassLoader}} is 
> queried to resolve a class only available in A, it will try to resolve it 
> from B. This happens because the 
> {{org.apache.sling.commons.classloader.impl.PackageAdminClassLoader}} only 
> checks the bundle that provides the highest API (in terms of version number) 
> of the class' providing package.



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