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https://issues.apache.org/jira/browse/OAK-7312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Francesco Mari updated OAK-7312:
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Attachment: 001.patch
> Evaluate the feasibility of running cleanup before compaction
> -------------------------------------------------------------
>
> Key: OAK-7312
> URL: https://issues.apache.org/jira/browse/OAK-7312
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segment-tar
> Reporter: Francesco Mari
> Assignee: Francesco Mari
> Priority: Major
> Attachments: 001.patch
>
>
> Currently cleanup is run only after the compaction phase. Assuming that the
> system is configured to retain the default value of two generations, it might
> happen that, during the compaction phase, the system will need space for a
> third generation, the one being currently compacted.
> In order to provide better guarantees on the amount of used disk space, it
> should be possible to optimistically perform cleanup before compaction,
> getting rid of the oldest generation before a new one is constructed.
> This issue tracks the feasibility of this approach, to be validated with a
> simple proof of concept.
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