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https://issues.apache.org/jira/browse/OAK-10771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838961#comment-17838961
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Axel Hanikel commented on OAK-10771:
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I've created a PR at https://github.com/apache/jackrabbit-oak/pull/1427
> Add disk cache size stats and issue warning if evicted segment has zero length
> ------------------------------------------------------------------------------
>
> Key: OAK-10771
> URL: https://issues.apache.org/jira/browse/OAK-10771
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segment-azure
> Affects Versions: 1.62.0
> Reporter: Axel Hanikel
> Priority: Major
> Fix For: 1.64.0
>
>
> Note: The component is actually {{segment-remote}} but that's not on the list.
> The persistent disk cache computes its size internally by adding/subtracting
> the size of added/purged segments. We would like to be able to see if that
> computation is correct, by having both the computed size and the effective
> size on disk in the metrics.
> The background for this is that in a few rare instances, the disk cache
> evicted too many items (down to almost zero) instead of the expected 65% of
> its max size.
> Also we want to make sure that no evictions happen on items that have a
> length of zero. We're not sure if that happens or not, so the change is to
> refuse eviction in that case and log a warning instead.
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