[jira] [Commented] (OAK-638) Avoid branch/merge for small commits

["Jukka Zitting (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581171#comment-13581171 ] 

Jukka Zitting commented on OAK-638:
-----------------------------------

With the SegmentMK this is a non-issue, as it automatically buffers small commits in memory.
                
> Avoid branch/merge for small commits
> ------------------------------------
>
>                 Key: OAK-638
>                 URL: https://issues.apache.org/jira/browse/OAK-638
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core
>            Reporter: Marcel Reutegger
>            Priority: Minor
>
> The branch/merge features on the MicroKernel were initially introduced to stage changes of large commits. Currently oak-core creates a branch even for small changes like updating a property. I think this introduces quite some overhead for scenarios with highly concurrent updates. E.g. think of a twitter like application or a forum with comments. Well, basically user generated content. These update tend to be rather small (couple of nodes) but frequent and concurrent.
> Right now oak-core always does:
> - MK.branch()
> - MK.commit() to branch
> - MK.merge()
> For small commits, it ideally should do:
> - MK.commit() to trunk

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