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https://issues.apache.org/jira/browse/OAK-4293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Francesco Mari updated OAK-4293:
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Fix Version/s: (was: Segment Tar 0.0.4)
Segment Tar 0.0.6
> Refactor / rework compaction gain estimation
> ---------------------------------------------
>
> Key: OAK-4293
> URL: https://issues.apache.org/jira/browse/OAK-4293
> Project: Jackrabbit Oak
> Issue Type: Task
> Components: segment-tar
> Reporter: Michael Dürig
> Assignee: Alex Parvulescu
> Labels: gc
> Fix For: 1.6, Segment Tar 0.0.6
>
>
> I think we have to take another look at {{CompactionGainEstimate}} and see
> whether we can up with a more efficient way to estimate the compaction gain.
> The current implementation is expensive wrt. IO, CPU and cache coherence. If
> we want to keep an estimation step we need IMO come up with a cheap way (at
> least 2 orders of magnitude cheaper than compaction). Otherwise I would
> actually propose to remove the current estimation approach entirely
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