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https://issues.apache.org/jira/browse/TUSCANY-3939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hasan Muhammad closed TUSCANY-3939.
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Resolution: Fixed
> URLClassLoader locks the contrubution jar.
> ------------------------------------------
>
> Key: TUSCANY-3939
> URL: https://issues.apache.org/jira/browse/TUSCANY-3939
> Project: Tuscany
> Issue Type: Bug
> Components: Java SCA Assembly Model
> Affects Versions: Java-SCA-2.0-Beta1
> Environment: All
> Reporter: Hasan Muhammad
> Assignee: ant elder
> Priority: Critical
> Fix For: Java-SCA-2.0
>
>
> When a contribution is started, tuscany 2.0 uses URLClassLoader to load the
> classes/resources from the contribution. It locks the jar file and does not
> release the lock even on contribution stop. This is not a bug in tuscany
> code. This is a problem with Sun's URLClassLoader. Sun has a fix for this
> that is planned for Java 1.7. But for now, during contribution stop, the
> following method could be used without any issues, to release the classloader
> and all the resources it holds
> ClassLoaderUtil.releaseLoader((URLClassLoader)context.getApplicationClassLoader().getParent());
> Note that this method needs to be called on all Unused Contributions in the
> node, so that those contributions are also unlocked. The list of unused
> contributions already exists in the node since we have the following method
> node.stopCompositeAndUninstallUnused
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