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Posted to oak-issues@jackrabbit.apache.org by "Francesco Mari (JIRA)" <ji...@apache.org> on 2016/07/14 19:58:22 UTC

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

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

Francesco Mari updated OAK-2849:
--------------------------------
    Fix Version/s:     (was: Segment Tar 0.0.4)
                   Segment Tar 0.0.6

> 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: 1.6, Segment Tar 0.0.6
>
>         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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