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https://issues.apache.org/jira/browse/OAK-565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556272#comment-13556272
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Marcel Reutegger commented on OAK-565:
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bq. because mongoSync's headRevision is incremented for branch commits as well
You probably mean 'headRevision is set', right?
bq. FetchHeadRevisionIdAction used to just read headRevId in sync collection
but we had to change it to account for branches as you already guessed.
Wouldn't it be easier to limit usage of headRevId to trunk only? Branch commits
always come with a branch revisionId, so we know where it belongs to.
> CommitCommand readExistingNodes/mergeNodes called unnecessarily
> ---------------------------------------------------------------
>
> Key: OAK-565
> URL: https://issues.apache.org/jira/browse/OAK-565
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: mongomk
> Reporter: Mete Atamel
> Assignee: Mete Atamel
> Priority: Minor
> Attachments: commitcommandoptimization.patch
>
>
> CommitCommand/CommitCommandNew calls readExistingNodes and mergeNodes all the
> time. Instead, it should only call these methods when the base revision id is
> less than the head revision.
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