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Posted to oak-issues@jackrabbit.apache.org by "Davide Giannella (JIRA)" <ji...@apache.org> on 2016/11/14 11:35:01 UTC

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

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

Davide Giannella closed OAK-2849.
---------------------------------

Bulk close for 1.5.13

> 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, 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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