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https://issues.apache.org/jira/browse/SLING-12266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17835759#comment-17835759
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Csaba Varga commented on SLING-12266:
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I separated that change to a different commit because I wasn't sure about it,
either. On one hand, it's the only way I can see to avoid running some code
that parses a large CND file and tries to (redundantly) register the built-in
node types. On the other hand, it _is_ a bit ugly, and it doesn't save that
much time, according to my quick and dirty performance tests.
I can drop that part from my PR if that's the consensus.
> Cache initial repository state to improve JCR_OAK performance
> -------------------------------------------------------------
>
> Key: SLING-12266
> URL: https://issues.apache.org/jira/browse/SLING-12266
> Project: Sling
> Issue Type: Improvement
> Components: Testing
> Affects Versions: Testing Sling Mock 3.4.18
> Reporter: Csaba Varga
> Assignee: Stefan Seifert
> Priority: Minor
>
> A lot of effort goes into preparing an Oak Mock repository from scratch: node
> types need to be registered, indexes need to be created, and all this happens
> over several commits. None of this work depends on the test case itself, so
> it will always result in the exact same repository state. We could take the
> root NodeState from the first repository we build, then build subsequent
> repositories on top of it, avoiding most of the redundant work. Commits can
> be relatively expensive even in memory, so each one we avoid can save a lot
> of time in the long term.
>
> This would require extending the contract between Testing Sling Mock and the
> ResourceResolverTypeAdapters, to add optional "make snapshot" and "build repo
> from snapshot" operations. For adapters that don't support them, we would
> keep rebuilding things from scratch.
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