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https://issues.apache.org/jira/browse/OAK-1789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13986865#comment-13986865
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Jukka Zitting commented on OAK-1789:
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Followup commits in revisions 1591713, 1591715 and 1591723 addressed a couple
of issues detected during manual testing. I also expanded the automated test
case to check for issues.
> Upgraded version history has UUIDs as jcr:frozenUuid of non-referenceable
> nodes
> -------------------------------------------------------------------------------
>
> Key: OAK-1789
> URL: https://issues.apache.org/jira/browse/OAK-1789
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: upgrade
> Affects Versions: 0.20
> Reporter: Jukka Zitting
> Assignee: Jukka Zitting
> Fix For: 1.1
>
>
> In Jackrabbit Classic each node, even non-referenceable ones, has a UUID as
> its identifier, and thus the {{jcr:frozenUuid}} properties of frozen nodes
> are always UUIDs. In contrast Oak uses path identifiers for non-referenceable
> frozen nodes (see OAK-1009), which presents a problem when dealing with
> version histories migrated from Jackrabbit Classic.
> To avoid this mismatch, the upgrade code should check each frozen node for
> referenceability and replace the frozen UUID with a path identifier if needed.
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