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Posted to user@nutch.apache.org by Ian Piper <ia...@tellura.co.uk> on 2012/08/01 00:27:06 UTC

Re: Why won't my crawl ignore these urls?

Thanks for all the positive suggestions folks. I will have a go at these and hopefully they will help me narrow down the problem.


Ian.
--

On 31 Jul 2012, at 20:22, AC Nutch <ac...@gmail.com> wrote:

> A couple of things I could think of are:
> 
> (1) Make sure those regex excludes aren't below a "catch-all" include. If you had "+." right above those for example in the regex-urlfilter file, it is my understanding that Nutch will index them.
> 
> (2) I know everyone keeps saying this but make sure the regexes are correct. One thing I noticed is that your dots are not escaped. I would try making it more general and narrow it down, or use an online regex validation tool. If you're feeling lazy try the following:
> 
> -^http://.*\.elaweb\.org\.uk/resources/type\..*
> -^http://.*\.elaweb\.org\.uk/resources/topic\..*
> 
> It's a little more general and easier to not screw up ;-) If that's not acceptable for your purposes let us know I'm sure someone could help with the specific regexes.
> 
> 
> 
> On Mon, Jul 30, 2012 at 12:24 PM, Ian Piper <ia...@tellura.co.uk> wrote:
> Hi all,
> 
> I have been trying to get to the bottom of this problem for ages and cannot resolve it - you're my last hope, Obi-Wan...
> 
> I have a job that crawls over a client's site. I want to exclude urls that look like this:
> 
> http://[clientsite.net]/resources/type.aspx?type=[whatever]
> 
> and
> 
> http://[clientsite.net]/resources/topic.aspx?topic=[whatever]
> 
> 
> To achieve this I thought I could put this into conf/regex-urlfilter.txt:
> 
> [...]
> -^http://([a-z0-9\-A-Z]*\.)*www.elaweb.org.uk/resources/type.aspx.*
> -^http://([a-z0-9\-A-Z]*\.)*www.elaweb.org.uk/resources/topic.aspx.*
> [...]
> 
> Yet when I next run the crawl I see things like this:
> 
> fetching http://[clientsite.net]/resources/topic.aspx?topic=10
> -activeThreads=10, spinWaiting=9, fetchQueues.totalSize=37
> [...]
> fetching http://[clientsite.net]/resources/type.aspx?type=2
> -activeThreads=10, spinWaiting=9, fetchQueues.totalSize=36
> [...]
> 
> and the corresponding pages seem to appear in the final Solr index. So clearly they are not being excluded.
> 
> Is anyone able to explain what I have missed? Any guidance much appreciated.
> 
> Thanks,
> 
> 
> Ian.
> -- 
> Dr Ian Piper
> Tellura Information Services - the web, document and information people
> Registered in England and Wales: 5076715, VAT Number: 874 2060 29
> http://www.tellura.co.uk/
> Creator of monickr: http://monickr.com
> 01926 813736 | 07973 156616
> -- 
> 
> 
> 
> 

-- 
Dr Ian Piper
Tellura Information Services - the web, document and information people
Registered in England and Wales: 5076715, VAT Number: 874 2060 29
http://www.tellura.co.uk/
Creator of monickr: http://monickr.com
01926 813736 | 07973 156616
--