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https://issues.apache.org/jira/browse/OAK-2040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14106912#comment-14106912
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Alex Parvulescu commented on OAK-2040:
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with rev 1619823 I added the following warn message
{code} TarMK compaction found {} checkpoints, you might need to run checkpoint
cleanup {code}
I think this should be enough to point people in the good direction.
> Tar compaction: log a warning if there is more than one checkpoint
> ------------------------------------------------------------------
>
> Key: OAK-2040
> URL: https://issues.apache.org/jira/browse/OAK-2040
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, segmentmk
> Reporter: Thomas Mueller
> Fix For: 1.0.5
>
>
> Tar segment compaction usually can't shrink the repository if there are many
> checkpoints. Checkpoints can be cleaned up, but maybe somebody forgets about
> this, or possibly checkpoints can accumulate due to a bug.
> Before running compaction, the segment node store should check how many
> checkpoints there are, and if there is more than one, it should log a
> warning. That way one can more easily analyze problems related to compaction.
> In addition to that, maybe compaction should simply not do anything (except
> for logging warnings) if there are more than 10 checkpoints.
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