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https://issues.apache.org/jira/browse/TAP5-1650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAP5-1650.
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Resolution: Fixed
Fix Version/s: 5.3
Appears fix as of 5.3-beta-20.
> On a cold start with a large number of incoming requests, Tapestry can
> deadlock inside PlasticClassLoader/PlasticClassPool
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: TAP5-1650
> URL: https://issues.apache.org/jira/browse/TAP5-1650
> Project: Tapestry 5
> Issue Type: Bug
> Components: plastic
> Affects Versions: 5.3
> Reporter: Howard M. Lewis Ship
> Assignee: Howard M. Lewis Ship
> Priority: Critical
> Labels: deadlock, performance
> Fix For: 5.3
>
> Attachments: tapestry-deadlock-fix-1.patch
>
>
> Discovered during load testing; the scenario is a cold start for the
> application then hitting it with large numbers of concurrent requests with no
> ramp up. The deadlocks involve two methods:
> PlasticClassLoader.loadClass()
> PlasticClassPool.getClassInstantiator()
> A proper solution would to make these methods share a single explicit Lock,
> rather than be synchronized.
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