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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Updated] (OAK-2849) Improve revision gc on SegmentMK
Date Wed, 05 Aug 2015 14:16:08 GMT

     [ https://issues.apache.org/jira/browse/OAK-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Michael Dürig updated OAK-2849:
    Fix Version/s:     (was: 1.3.5)

> Improve revision gc on SegmentMK
> --------------------------------
>                 Key: OAK-2849
>                 URL: https://issues.apache.org/jira/browse/OAK-2849
>             Project: Jackrabbit Oak
>          Issue Type: Task
>          Components: segmentmk
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: compaction, gc
>             Fix For: 1.3.6
> This is a container issue for the ongoing effort to improve revision gc of the SegmentMK.

> I'm exploring 
> * ways to make the reference graph as exact as possible and necessary: it should not
contain segments that are not referenceable any more and but must contain all segments that
are referenceable. 
> * ways to segregate the reference graph reducing dependencies between certain set of
segments as much as possible. 
> * Reducing the number of in memory references and their impact on gc as much as possible.
> Work in progress is in my private [Github fork|https://github.com/mduerig/jackrabbit-oak].
As soon as something is promising enough to make it into Oak, I spawn of an issue an make
it a subtask of this task. 

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