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https://issues.apache.org/jira/browse/OAK-5878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15899243#comment-15899243
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Julian Reschke commented on OAK-5878:
-------------------------------------
So this change change will only affect RDBDocumentStore, for which it is a
quick win, reducing the number of table scans for ´VGC from 3 to 2.
Even if we do something fancier for OAK-5855, this change will be simple to
backport all the way back to 1.0.
So I'd propose to apply this to trunk, and gradually port it back to earlier
branches...
> SplitDocumentCleanup iterates twice over splitDocGarbage
> --------------------------------------------------------
>
> Key: OAK-5878
> URL: https://issues.apache.org/jira/browse/OAK-5878
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: documentmk
> Reporter: Julian Reschke
> Assignee: Julian Reschke
> Attachments: OAK-5878.diff
>
>
> {{SplitDocumentCleanup}} currently iterates twice over {{splitDocGarbage}}.
> NOTE: not the case for Mongo DB, as {{MongoVersionGCSupport}} overwrites
> {{deleteSplitDocuments()}}.
> {{deleteSplitDocuments()}} currently iterates over {{splitDocGarbage}} to
> obtain the IDs of the documents to be deleted. Instead, we could just collect
> the IDs inside {{disconnect()}}, the memory requirements would be the same.
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