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https://issues.apache.org/jira/browse/OAK-6303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Reschke updated OAK-6303:
--------------------------------
Description:
It appears that depending on actual cache entry sizes, the {{CacheLIRS}} might
grow beyond the configured limit.
For {{RDBBlobStore}}, the limit is currently configured to 16MB, yet storing
random 2M entries appears to fill the cache with 64MB of data (according to
it's own stats).
The attached test case reproduces this.
(it seems this is caused by the fact that each of the 16 segments of the cache
can hold 2 entries, no matter how big they are...)
was:
It appears that depending on actual cache entry sizes, the {{CacheLIRS}} might
grow beyond the configured limit.
For {{RDBBlobStore}}, the limit is currently configured to 16MB, yet storing
random 2M entries appears to fill the cache with 64MB of data (according to
it's own stats).
The attached test case reproduces this.
> Cache in CachingBlobStore might grow beyond configured limit
> ------------------------------------------------------------
>
> Key: OAK-6303
> URL: https://issues.apache.org/jira/browse/OAK-6303
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: blob, core
> Reporter: Julian Reschke
> Assignee: Thomas Mueller
> Attachments: OAK-6303-test.diff
>
>
> It appears that depending on actual cache entry sizes, the {{CacheLIRS}}
> might grow beyond the configured limit.
> For {{RDBBlobStore}}, the limit is currently configured to 16MB, yet storing
> random 2M entries appears to fill the cache with 64MB of data (according to
> it's own stats).
> The attached test case reproduces this.
> (it seems this is caused by the fact that each of the 16 segments of the
> cache can hold 2 entries, no matter how big they are...)
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