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https://issues.apache.org/jira/browse/OAK-9342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17281719#comment-17281719
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Stefan Egli commented on OAK-9342:
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+1, agree, collecting invalidation paths is superfluous work when invoked as 
part of {{diffImpl}} - it basically just collects the paths then throws them 
away via a friendly {{close()}}. Invalidation paths are only needed/processed 
by {{backgroundRead}}.

> JournalDiffLoader should ignore linked invalidation entries
> -----------------------------------------------------------
>
>                 Key: OAK-9342
>                 URL: https://issues.apache.org/jira/browse/OAK-9342
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: documentmk
>            Reporter: Marcel Reutegger
>            Assignee: Marcel Reutegger
>            Priority: Major
>
> The JournalDiffLoader reads journal documents to identify paths that have 
> been changed between two given revisions. It uses the JournalEntry to read 
> those changes. The latter class always resolves linked invalidation journal 
> entries. This is necessary for the background read to invalidate documents in 
> the cache, but unnecessary for the JournalDiffLoader use case.
> The {{invalidate}} parameter of {{JournalEntry.fillExternalChanges()}} should 
> become optional.



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