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https://issues.apache.org/jira/browse/NUTCH-249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marko Bauhardt updated NUTCH-249:
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Attachment: bw.patch
Hi,
i have updated the patch to the nutch src code release-1.0
(http://svn.apache.org/repos/asf/lucene/nutch/tags/release-1.0)
i hope license header and code formatting is ok.
Here a usage how you can use the black white filter.
Create a start url file for the crawldb e.g in /tmp/urls/start/urls.txt, for
example
http://lucene.apache.org/nutch/index.html
Create a limit url file for the bwdb e.g in /tmp/urls/limit/urls.txt, for
example
http://lucene.apache.org/nutch/
Create a exclude url file for the bwdb e.g in /tmp/urls/exclude/urls.txt, for
example
http://lucene.apache.org/nutch/about.html
bin/nutch inject crawldb /tmp/urls/start/
bin/nutch org.apache.nutch.crawl.bw.BWInjector bwdb /tmp/urls/limit -white
bin/nutch org.apache.nutch.crawl.bw.BWInjector bwdb /tmp/urls/exclude -black
bin/nutch generate crawldb segments
bin/nutch fetch segments/20090729103233/
bin/nutch org.apache.nutch.crawl.bw.BWUpdateDb crawldb/ bwdb/
segments/20090729103233/ true false (Usage: <crawldb> <bwdb> <segment>
<normalize> <filter>)
Check your crawldb. It should contains only urls starting with
"http://lucene.apache.org/nutch/";, but not the url
"http://lucene.apache.org/nutch/about.html";.
> black- white list url filtering
> -------------------------------
>
> Key: NUTCH-249
> URL: https://issues.apache.org/jira/browse/NUTCH-249
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Affects Versions: 0.8
> Reporter: Stefan Groschupf
> Assignee: Dennis Kubes
> Priority: Trivial
> Fix For: 1.1
>
> Attachments: blackWhiteListV2.patch, blackWhiteListV3.patch, bw.patch
>
>
> Existing url filter mechanisms need to process each url against each filter
> pattern. For very large filter sets this may be does not scale very well.
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