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https://issues.apache.org/jira/browse/OAK-6240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16019476#comment-16019476
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Tomek Rękawek commented on OAK-6240:
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{noformat}
$ mkdir dest-repo
$ java -Doak.upgrade.addSecondaryMetadata=true -jar
oak-upgrade-1.8-SNAPSHOT.jar --include-paths=/content
mongodb://localhost:27017/aem-author dest-repo
{noformat}
> Sidegrade support for DocumentNodeStore to Secondary NodeStore
> --------------------------------------------------------------
>
> Key: OAK-6240
> URL: https://issues.apache.org/jira/browse/OAK-6240
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: documentmk, upgrade
> Reporter: Chetan Mehrotra
> Assignee: Tomek Rękawek
> Labels: secondary-nodestore
> Fix For: 1.7.0, 1.8
>
>
> Seondary NodeStore feature (OAK-4180) currently creates the secondary
> NodeStore upon initialization. This may take long time for existing repo. To
> simplify that we should add support in sidegrade to migrate an existing
> DocumentNodeStore setup to Secondary NodeStore
> This would also allow us to use the sidegraded repository as a clone of
> existing repository with the advantage that it would support incremental
> updates. Currently if a repository is cloned it does not support incremental
> update as NodeState comparison is done based on default implementation
> (actual comparison) as it cannot make use of recordId or revision to optimize
> the diff to determine trees which are not changed between source and target
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