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https://issues.apache.org/jira/browse/JCR-3573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13919387#comment-13919387
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Manfred Baedke commented on JCR-3573:
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Backported to 2.6 in http://svn.apache.org/r1574095
> Improve token based login concurrency
> -------------------------------------
>
> Key: JCR-3573
> URL: https://issues.apache.org/jira/browse/JCR-3573
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-core
> Reporter: Marcel Reutegger
> Priority: Minor
> Fix For: 2.7, 2.6.6
>
> Attachments: JCR-3573.patch
>
>
> Currently TokenBasedAuthentication.createToken() is synchronized and
> therefore serializes creation of tokens repository wide.
> Removing the synchronization shows test failures because the .tokens node is
> created concurrently by multiple sessions. Instead of serializing the calls,
> we could also use an optimistic approach. See attached patch. All tests pass.
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