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https://issues.apache.org/jira/browse/OAK-2776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14660047#comment-14660047
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Manfred Baedke commented on OAK-2776:
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Committed to trunk with r1694498.
Many thanks to Julian and Tomek.
> Upgrade should allow to skip copying versions
> ---------------------------------------------
>
> Key: OAK-2776
> URL: https://issues.apache.org/jira/browse/OAK-2776
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: upgrade
> Affects Versions: 1.2
> Reporter: Julian Sedding
> Attachments: OAK-2776-August.patch, OAK-2776.patch
>
>
> In some cases it is not necessary to copy version histories during an
> upgrade. Skipping to copy versions can result in a lot less content that
> needs copying and thus a significant speedup.
> Additionally, OAK-2586 introduces the possibility to include and exclude
> paths for an upgrade. Version histories should thus only be copied if their
> respective versionable node is present in the copied part of the content.
> Also reducing content being copied redundantly.
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