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From "Michael Dick (JIRA)" <j...@apache.org>
Subject [jira] Commented: (OPENJPA-1172) Use java.util.concurrent.ConcurrentHashMap rather than a synchronized HashMap in ClassMapping.
Date Thu, 09 Jul 2009 20:20:14 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729399#action_12729399
] 

Michael Dick commented on OPENJPA-1172:
---------------------------------------

Thanks for the patch Rick, I've updated the performance sandbox with this change - pending
testing it will be moved to other branches. 

> Use java.util.concurrent.ConcurrentHashMap rather than a synchronized HashMap in ClassMapping.
> ----------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-1172
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1172
>             Project: OpenJPA
>          Issue Type: Improvement
>          Components: performance
>            Reporter: Rick Curtis
>            Assignee: Rick Curtis
>            Priority: Minor
>         Attachments: OPENJPA-1172.patch
>
>
> A performance run shows improved scalability when using the java.util.concurrent.ConcurrentHashMap
in org.apache.openjpa.jdbc.meta.ClassMapping.
> This issue is a child of OPENJPA-1118.

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