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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Updated] (OAK-3349) Partial compaction
Date Thu, 10 Sep 2015 07:27:46 GMT

     [ https://issues.apache.org/jira/browse/OAK-3349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig updated OAK-3349:
-------------------------------
    Fix Version/s:     (was: 1.3.6)
                   1.4

> Partial compaction
> ------------------
>
>                 Key: OAK-3349
>                 URL: https://issues.apache.org/jira/browse/OAK-3349
>             Project: Jackrabbit Oak
>          Issue Type: Sub-task
>          Components: segmentmk
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: compaction, gc
>             Fix For: 1.4
>
>
> On big repositories compaction can take quite a while to run as it needs to create a
full deep copy of the current root node state. For such cases it could be beneficial if we
could partially compact the repository thus splitting full compaction over multiple cycles.

> Partial compaction would run compaction on a sub-tree just like we now run it on the
full tree. Afterwards it would create a new root node state by referencing the previous root
node state replacing said sub-tree with the compacted one. 
> Todo: Asses feasibility and impact, implement prototype.



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