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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-6303) Cache in CachingBlobStore might grow beyond configured limit
Date Mon, 13 Nov 2017 08:55:00 GMT

     [ https://issues.apache.org/jira/browse/OAK-6303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Mueller updated OAK-6303:
--------------------------------
    Fix Version/s:     (was: 1.8)
                   1.9

> 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
>             Fix For: 1.9
>
>         Attachments: OAK-6303-test.diff, OAK-6303.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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