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https://issues.apache.org/jira/browse/SLING-7466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16350327#comment-16350327
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Carsten Ziegeler commented on SLING-7466:
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Adjusted the patch and cleary document what it handles and what not - while the
patch does not handle all cases it's at least better than before
rev 0897a1d
> EntityResourceList cleaning up resource instead of updating
> -----------------------------------------------------------
>
> Key: SLING-7466
> URL: https://issues.apache.org/jira/browse/SLING-7466
> Project: Sling
> Issue Type: Bug
> Components: Installer
> Affects Versions: Installer Core 3.8.10
> Reporter: Dominik Süß
> Assignee: Carsten Ziegeler
> Priority: Major
> Fix For: Installer Core 3.8.12
>
>
> In case of a replaced launchpad containing an unchanged resource the
> EntityResourceList is called for "addOrUpdate" of this Resource - in case the
> resource already exists but the digest differs the method currently drops the
> new resource without updating the existing one keeping the old dataUri.
> The issue manifests if these RegisteredResources are currently in INSTALL
> state and the INSTALLED version gets dropped subsequently.
> This isn't just a theoretical case but was observed for cases where a bundle
> in an n-1 version was patched to the same version provided in version n of
> launchpad and launchpad hasn't changed for n+1. If the jcr version is then
> removed the installation of the outdated registeredResource fails because of
> a wrong dataUri.
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