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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2014/05/12 17:27:16 UTC

[jira] [Updated] (OAK-1804) TarMK compaction

     [ https://issues.apache.org/jira/browse/OAK-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Dürig updated OAK-1804:
-------------------------------

    Labels: production tools  (was: )

> TarMK compaction
> ----------------
>
>                 Key: OAK-1804
>                 URL: https://issues.apache.org/jira/browse/OAK-1804
>             Project: Jackrabbit Oak
>          Issue Type: New Feature
>          Components: segmentmk
>            Reporter: Jukka Zitting
>              Labels: production, tools
>
> The TarMK would benefit from periodic "compact" operations that would traverse and recreate (parts of) the content tree in order to optimize the storage layout. More specifically, such compaction would:
> * Optimize performance by increasing locality and reducing duplication, both of which improve the effectiveness of caching.
> * Allow the garbage collector to release more unused disk space by removing references to segments where only a subset of content is reachable.



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