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https://issues.apache.org/jira/browse/OPENJPA-439?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Patrick Linskey updated OPENJPA-439:
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Attachment: OPENJPA-439-patch.jar
> Performance degradation in multi-transaction operations
> -------------------------------------------------------
>
> Key: OPENJPA-439
> URL: https://issues.apache.org/jira/browse/OPENJPA-439
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 0.9.0, 0.9.6, 0.9.7, 1.0.0, 1.0.1, 1.0.2, 1.1.0
> Reporter: Patrick Linskey
> Fix For: 1.1.0
>
> Attachments: OPENJPA-439-patch.jar, OPENJPA-439.patch, performance
> testcase results.zip, testcaseperformance.zip
>
>
> Reusing a Broker for multiple transactions / persistence contexts
> demonstrates a performance degradation, possibly due to explicit calls to
> clear sets and maps, rather than just dereferencing them.
> Discussion:
> http://www.nabble.com/Performance-drop-in-AbstractHashedMap.clear%28%29-tf4769771.html#a13656730
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