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Posted to oak-issues@jackrabbit.apache.org by "Alex Parvulescu (JIRA)" <ji...@apache.org> on 2016/06/03 08:45:59 UTC

[jira] [Resolved] (OAK-4279) Rework offline compaction

     [ https://issues.apache.org/jira/browse/OAK-4279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Parvulescu resolved OAK-4279.
----------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 1.6)
                   1.5.3

perfect! marking as fixed. thanks [~mduerig] for keeping a close eye.

> Rework offline compaction
> -------------------------
>
>                 Key: OAK-4279
>                 URL: https://issues.apache.org/jira/browse/OAK-4279
>             Project: Jackrabbit Oak
>          Issue Type: Task
>          Components: segment-tar
>            Reporter: Michael Dürig
>            Assignee: Alex Parvulescu
>            Priority: Blocker
>              Labels: compaction, gc
>             Fix For: 1.5.3
>
>         Attachments: OAK-4279-binaries.patch, OAK-4279-checkpoints.patch, OAK-4279-v0.patch, OAK-4279-v1.patch, OAK-4279-v2.patch, OAK-4279-v3.patch, OAK-4279-v4.patch
>
>
> The fix for OAK-3348 broke some of the previous functionality of offline compaction:
> * No more progress logging
> * Compaction is not interruptible any more (in the sense of OAK-3290)
> * Offline compaction could remove the ids of the segment node states to squeeze out some extra space. Those are only needed for later generations generated via online compaction. 
> We should probably implement offline compaction again through a dedicated {{Compactor}} class as it was done in {{oak-segment}} instead of relying on the de-duplication cache (aka online compaction). 



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