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https://issues.apache.org/jira/browse/OPENJPA-994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard Zowalla resolved OPENJPA-994.
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Resolution: Won't Fix
Closing as obsolete during backlog cleanup: A vague 2009 mailing-list scaling
report with no test case or concrete change asked for; nothing here can be
acted on. Please reopen if this still happens with OpenJPA 4.x.
> Improve performance in M2M findBy operations
> --------------------------------------------
>
> Key: OPENJPA-994
> URL: https://issues.apache.org/jira/browse/OPENJPA-994
> Project: OpenJPA
> Issue Type: Improvement
> Reporter: Michael Dick
> Priority: Major
>
> This issue was reported on the users mailing list by Shubbis who noticed
> reduced performance with OpenJPA when using M2M relationships.
> Further investigation makes it appear to be a scaling issue, for small
> numbers of queries OpenJPA may perform fine, but when the number increases
> (ie > 50) we start lagging behind.
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