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https://issues.apache.org/jira/browse/STANBOL-147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13017035#comment-13017035
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Olivier Grisel commented on STANBOL-147:
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By upgrading Stanbol to use the current trunk of OpenNLP the issue disappears.
As soon as OpenNLP 1.5.1 is out we should upgrade.
> NamedEntityExtractionEnhancementEngine is not thread safe
> ---------------------------------------------------------
>
> Key: STANBOL-147
> URL: https://issues.apache.org/jira/browse/STANBOL-147
> Project: Stanbol
> Issue Type: Bug
> Reporter: Olivier Grisel
> Assignee: Olivier Grisel
> Attachments: STANBOL-147.diff
>
>
> Under high concurrency, using the same mode instances in several threads can
> trigger NPEs. One should put the models into thread locals instead.
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