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https://issues.apache.org/jira/browse/SLING-5014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15000338#comment-15000338
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Bertrand Delacretaz commented on SLING-5014:
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If you want to completely forbid reinstalling obsolete bundles the only safe
way is blacklists at the BundleContext level, for bundle install and upgrade
operations. Apart from that I agree that cleanup might be orthogonal to this.
My current use cases is system upgrades which sometimes contain unwanted
leftovers from older versions, and cleanup would fix that.
> Installer blacklist, to avoid reinstalling older bundles
> --------------------------------------------------------
>
> Key: SLING-5014
> URL: https://issues.apache.org/jira/browse/SLING-5014
> Project: Sling
> Issue Type: Bug
> Components: Installer
> Affects Versions: Installer Core 3.6.6
> Reporter: Dominik Süß
> Attachments: SLING-5014-1.diff
>
>
> In case a bundle has mutliple install candiates only the highest version
> (with the highest priorty for the same versions) wins. An uninstall directive
> in the Sling bootstrap.txt file or provisioning model uninstalls this
> version. The way the OSGi install behavior is defined this lets the next
> artifact in the priority queue to get active and consequently only leads to
> downgrade to the next in the queue.
> As the uninstall directive declares a range that should be uninstalled the
> expectation is that after a startup with such an uninstall directive none of
> the declared versions are in an installed state. In consequence the OSGi
> installer must save this metainformation in the state that prevents a
> downgrade to a version that is part of an active uninstall directive.
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