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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2016/11/03 13:46:00 UTC

[jira] [Resolved] (OAK-2849) Improve revision gc on SegmentMK

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

Michael Dürig resolved OAK-2849.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.13

Resolving this issue as the bulk of the work has been done. 

Created a new epic for following up re. scalability: OAK-5056

> Improve revision gc on SegmentMK
> --------------------------------
>
>                 Key: OAK-2849
>                 URL: https://issues.apache.org/jira/browse/OAK-2849
>             Project: Jackrabbit Oak
>          Issue Type: Epic
>          Components: segment-tar
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: compaction, gc
>             Fix For: 1.5.13
>
>         Attachments: SegmentCompactionIT-conflicts.png
>
>
> 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.



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