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From "Sebastian Nagel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (NUTCH-706) Url regex normalizer
Date Wed, 08 Aug 2012 21:51:20 GMT

     [ https://issues.apache.org/jira/browse/NUTCH-706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebastian Nagel updated NUTCH-706:
----------------------------------

    Attachment: NUTCH-706-2.patch

Second trial for patch. The first one does not remove:
{code}
?_sessionID=...
{code}
Added more tests to cover more types of real session ids and a further counterexample:
{code}
?addressid=...
{code}
                
> Url regex normalizer
> --------------------
>
>                 Key: NUTCH-706
>                 URL: https://issues.apache.org/jira/browse/NUTCH-706
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>            Reporter: Meghna Kukreja
>            Priority: Minor
>             Fix For: 1.6
>
>         Attachments: NUTCH-706-2.patch, NUTCH-706.patch
>
>
> Hey,
> I encountered the following problem while trying to crawl a site using
> nutch-trunk. In the file regex-normalize.xml, the following regex is
> used to remove session ids:
> <pattern>([;_]?((?i)l|j|bv_)?((?i)sid|phpsessid|sessionid)=.*?)(\?|&amp;|#|$)</pattern>.
> This pattern also transforms a url, such as,
> "&newsId=2000484784794&newsLang=en" into "&new&newsLang=en" (since it
> matches 'sId' in the 'newsId'), which is incorrect and hence does not
> get fetched. This expression needs to be changed to prevent this.
> Thanks,
> Meghna

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