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Posted to oak-issues@jackrabbit.apache.org by "Davide Giannella (JIRA)" <ji...@apache.org> on 2017/07/06 15:35:04 UTC

[jira] [Closed] (OAK-5790) Chronologically rebase checkpoints on top of each other during compaction

     [ https://issues.apache.org/jira/browse/OAK-5790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Davide Giannella closed OAK-5790.
---------------------------------

Bulk close for 1.7.3

> Chronologically rebase checkpoints on top of each other during compaction
> -------------------------------------------------------------------------
>
>                 Key: OAK-5790
>                 URL: https://issues.apache.org/jira/browse/OAK-5790
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: compaction, gc, performance
>             Fix For: 1.8, 1.7.3
>
>         Attachments: size over time.png
>
>
> Currently the compactor does just a rewrite of the super root node without any special handling of the checkpoints. It just relies on the node de-duplication cache to avoid fully exploding the checkpoints. 
> I think this can be improved by subsequently rebasing checkpoints on top of each other during compaction. (Very much like checkpoints are handled in migration). 



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