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https://issues.apache.org/jira/browse/FELIX-5086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Bosschaert resolved FELIX-5086.
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Resolution: Fixed
> Coordinator.begin can return null
> ---------------------------------
>
> Key: FELIX-5086
> URL: https://issues.apache.org/jira/browse/FELIX-5086
> Project: Felix
> Issue Type: Bug
> Components: Coordinator Service
> Affects Versions: coordinator-1.0.0
> Reporter: Eduard Vodicka
> Assignee: Carsten Ziegeler
> Priority: Critical
> Fix For: coordinator-1.0.2
>
> Attachments: Fix_null_return.patch,
> test_to_demonstrate_GC_problems.patch
>
>
> Calls to CoordinatorImpl.begin (and CorrdinatorImpl.create) can return null,
> if the Garbage Collector runs between the creation of the Coordination and
> the return of the CoordinationHolder reference.
> During that time, only the WeakReference to the Holder exists, therefor it is
> removed and cannot be returned to the caller.
> This can easily happen in high load scenarios with many calls to
> CoordinatorImpl.begin. The caller has no chance of ever receiving a
> Coordination reference.
> I created a simple test do demonstrate the problem.
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