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https://issues.apache.org/jira/browse/OPENNLP-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17514078#comment-17514078
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ASF GitHub Bot commented on OPENNLP-1266:
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jzonthemtn closed pull request #355:
URL: https://github.com/apache/opennlp/pull/355
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> Limit normalization regexes in UrlCharSequenceNormalizer
> --------------------------------------------------------
>
> Key: OPENNLP-1266
> URL: https://issues.apache.org/jira/browse/OPENNLP-1266
> Project: OpenNLP
> Issue Type: Task
> Reporter: Tim Allison
> Assignee: Tim Allison
> Priority: Major
>
> The {{MAIL_REGEX}} in UrlCharSequenceNormalizer is unbounded and requires
> backtracking. In rare cases, this can cause eye-opening performance costs.
>
> I tested the other regexes in the other normalizers. I could be wrong, but
> they don't appear to require backtracking, and there are no surprising
> performance costs.
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