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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (JCR-3658) MembershipCache not consistently synchronized
Date Thu, 29 Aug 2013 15:31:54 GMT

     [ https://issues.apache.org/jira/browse/JCR-3658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Marcel Reutegger updated JCR-3658:

    Attachment: current.png

current.png shows the timing with the current implementation. The horizontal axis shows buckets
for the time it took to call User.memberOf() in a logarithic scale. The first bucket (1) contains
timings from 0 to 10 us. The second bucket from 11 to 100 us, etc.
> MembershipCache not consistently synchronized
> ---------------------------------------------
>                 Key: JCR-3658
>                 URL: https://issues.apache.org/jira/browse/JCR-3658
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core, security
>    Affects Versions: 2.7
>            Reporter: Tobias Bocanegra
>            Assignee: Marcel Reutegger
>            Priority: Minor
>         Attachments: current.png, JCR-3658-test.patch
> the membership cache access is mostly synchronized on 'this' but in the onEvent() handler,
the internal cache object is synchronized.
> suggest: to improve cache access by a r/w lock instead.

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