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https://issues.apache.org/jira/browse/OPENJPA-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Curtis reopened OPENJPA-1559:
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The change that I committed (rev. 921410) relies on double checked locking with
a primitive which I thought was safe to do.... but it appears that
TestDataCacheScheduler.testMultithreadedInitialization fails intermittently on
a larger test machine. To date I've been unable to recreate this problem on my
dev machine.
It appears that my fix still has a small window where this problem exists.
Reopening to investigate at a later date.
> DataCacheManager initialization isn't thread safe.
> --------------------------------------------------
>
> Key: OPENJPA-1559
> URL: https://issues.apache.org/jira/browse/OPENJPA-1559
> Project: OpenJPA
> Issue Type: Bug
> Components: datacache
> Affects Versions: 2.0.0
> Reporter: Rick Curtis
> Assignee: Rick Curtis
> Fix For: 2.0.0
>
>
> When running normally, some of OpenJPA configuration is lazily loaded and is
> not thread safe. Normally this isn't an issue if one thread has a different
> configured object than another.
> Today I came across a problem when using the DataCache EvictionScheduler that
> multiple scheduler threads can get created and kicked off.
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