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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2017/06/27 16:24:00 UTC
[jira] [Resolved] (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 ]
Michael Dürig resolved OAK-5790.
--------------------------------
Resolution: Fixed
The bulk of this is fixed. Remaining work is tracked with OAK-6399, which we should address once OAK-3349 is done.
> 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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