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https://issues.apache.org/jira/browse/OAK-1958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Dürig reassigned OAK-1958:
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Assignee: Michael Dürig
> Session.logout performance poor
> -------------------------------
>
> Key: OAK-1958
> URL: https://issues.apache.org/jira/browse/OAK-1958
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: jcr
> Affects Versions: 1.0.1
> Environment: linux jdk1.7 b25 and b55.
> Reporter: Rob Ryan
> Assignee: Michael Dürig
> Labels: Performance
> Attachments: oak-1958.diff, sessionConcurrencyTest.zip
>
>
> Problem:
> Session.logout was observed to take 14% of time in a performance test of a
> reasonably real-world load.
> Method:
> Use the attached sling junit test case to run 8 concurrent instances of the
> test. profile with YourKit or similar and see >50% time taken by logout.
> Expected:
> Logout should be practically free.
> Solution:
> The attached patch avoids a bug in guava-15 (still present in guava-17 the
> latest) where the former use of addCallback triggered many
> CancellationExceptions when sessions were quickly created and logged out.
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