Hi, Likely this is a question for Ferdy but if anyone else has input that'd be great. When running a crawl that I would expect to be contained to a single domain I'm seeing the crawler jump out to other domains. I'm using the trunk of Nutch 2.x which includes the following commit: https://github.com/apache/nutch/commit/c5e2236f36a881ee7fec97aff3baf9bb32b40200
The goal is to perform a focused crawl against a single domain and restrict the crawler from expanding beyond that domain. I've set the db.ignore.external.links property to true. I do not want to add a regex to regex-urlfilter.txt as I will be adding several thousand urls. The domain that I am crawling has documents with outlinks that are still within the domain but then redirect to external domains. cat urls/seed.txt http://www.ci.watertown.ma.us/ cat conf/nutch-site.xml ... <property> <name>db.ignore.external.links</name> <value>true</value> <description>If true, outlinks leading from a page to external hosts will be ignored. This is an effective way to limit the crawl to include only initially injected hosts, without creating complex URLFilters. </description> </property> <property> <name>plugin.includes</name> <value>protocol-http|urlfilter-regex|parse-(html|tika)|index-(basic|anchor)|urlnormalizer-(pass|regex|basic)|scoring-opic</value> <description>Regular expression naming plugin directory names to include. Any plugin not matching this expression is excluded. In any case you need at least include the nutch-extensionpoints plugin. By default Nutch includes crawling just HTML and plain text via HTTP, and basic indexing and search plugins. In order to use HTTPS please enable protocol-httpclient, but be aware of possible intermittent problems with the underlying commons-httpclient library. </description> </property> ... Running bin/nutch crawl urls -depth 8 -topN 100000 results in the the crawl eventually fetching and parsing documents on domains external to the only link in the seed.txt file. I would not expect to see urls like the following in my logs and in the HBase webpage table: fetching http://www.masshome.com/tourism.html Parsing http://www.disabilityinfo.org/ I'm reviewing the code changes but am still getting up to speed on the code base. Any ideas while I continue to dig around? Configuration issue or code? Thanks, Matt
