Markus, I tried it. The command line works great. But it doesn't seem to achieve the filtering effect even if I provide really tight patterns in the regex file. Any idea why?
On Sun, Nov 4, 2012 at 4:38 AM, Lewis John Mcgibbney < lewis.mcgibb...@gmail.com> wrote: > http://hadoop.apache.org/docs/r1.0.3/commands_manual.html#Generic+Options > > hth > > On Sun, Nov 4, 2012 at 9:15 AM, Markus Jelsma > <markus.jel...@openindex.io> wrote: > > Just try it. With -D you can override Nutch and Hadoop configuration > properties. > > > > > > > > > > > > -----Original message----- > >> From:Joe Zhang <smartag...@gmail.com> > >> Sent: Sun 04-Nov-2012 06:07 > >> To: user <user@nutch.apache.org> > >> Subject: Re: URL filtering: crawling time vs. indexing time > >> > >> Markus, I don't see "-D" as a valid command parameter for solrindex. > >> > >> On Fri, Nov 2, 2012 at 11:37 AM, Markus Jelsma > >> <markus.jel...@openindex.io>wrote: > >> > >> > Ah, i understand now. > >> > > >> > The indexer tool can filter as well in 1.5.1 and if you enable the > regex > >> > filter and set a different regex configuration file when indexing vs. > >> > crawling you should be good to go. > >> > > >> > You can override the default configuration file by setting > >> > urlfilter.regex.file and point it to the regex file you want to use > for > >> > indexing. You can set it via nutch solrindex > -Durlfilter.regex.file=/path > >> > http://solrurl/ ... > >> > > >> > Cheers > >> > > >> > -----Original message----- > >> > > From:Joe Zhang <smartag...@gmail.com> > >> > > Sent: Fri 02-Nov-2012 17:55 > >> > > To: user@nutch.apache.org > >> > > Subject: Re: URL filtering: crawling time vs. indexing time > >> > > > >> > > I'm not sure I get it. Again, my problem is a very generic one: > >> > > > >> > > - The patterns in regex-urlfitler.txt, howevery exotic they are, > they > >> > > control ***which URLs to visit***. > >> > > - Generally speaking, the set of ULRs to be indexed into solr is > only a > >> > > ***subset*** of the above. > >> > > > >> > > We need a way to specify crawling filter (which is > regex-urlfitler.txt) > >> > vs. > >> > > indexing filter, I think. > >> > > > >> > > On Fri, Nov 2, 2012 at 9:29 AM, Rémy Amouroux <r...@teorem.fr> > wrote: > >> > > > >> > > > You have still several possibilities here : > >> > > > 1) find a way to seed the crawl with the URLs containing the > links to > >> > the > >> > > > leaf pages (sometimes it is possible with a simple loop) > >> > > > 2) create regex for each step of the scenario going to the leaf > page, > >> > in > >> > > > order to limit the crawl to necessary pages only. Use the $ sign > at > >> > the end > >> > > > of your regexp to limit the match of regexp like http:// > ([a-z0-9]*\.)* > >> > > > mysite.com. > >> > > > > >> > > > > >> > > > Le 2 nov. 2012 à 17:22, Joe Zhang <smartag...@gmail.com> a écrit > : > >> > > > > >> > > > > The problem is that, > >> > > > > > >> > > > > - if you write regex such as: +^http://([a-z0-9]*\.)*mysite.com > , > >> > you'll > >> > > > end > >> > > > > up indexing all the pages on the way, not just the leaf pages. > >> > > > > - if you write specific regex for > >> > > > > > http://www.mysite.com/level1pattern/level2pattern/pagepattern.html, > >> > and > >> > > > you > >> > > > > start crawling at mysite.com, you'll get zero results, as > there is > >> > no > >> > > > match. > >> > > > > > >> > > > > On Fri, Nov 2, 2012 at 6:21 AM, Markus Jelsma < > >> > > > markus.jel...@openindex.io>wrote: > >> > > > > > >> > > > >> -----Original message----- > >> > > > >>> From:Joe Zhang <smartag...@gmail.com> > >> > > > >>> Sent: Fri 02-Nov-2012 10:04 > >> > > > >>> To: user@nutch.apache.org > >> > > > >>> Subject: URL filtering: crawling time vs. indexing time > >> > > > >>> > >> > > > >>> I feel like this is a trivial question, but I just can't get > my > >> > ahead > >> > > > >>> around it. > >> > > > >>> > >> > > > >>> I'm using nutch 1.5.1 and solr 3.6.1 together. Things work > fine at > >> > the > >> > > > >>> rudimentary level. > >> > > > >>> > >> > > > >>> If my understanding is correct, the regex-es in > >> > > > >>> nutch/conf/regex-urlfilter.txt control the crawling > behavior, ie., > >> > > > which > >> > > > >>> URLs to visit or not in the crawling process. > >> > > > >> > >> > > > >> Yes. > >> > > > >> > >> > > > >>> > >> > > > >>> On the other hand, it doesn't seem artificial for us to only > want > >> > > > certain > >> > > > >>> pages to be indexed. I was hoping to write some regular > >> > expressions as > >> > > > >> well > >> > > > >>> in some config file, but I just can't find the right place. My > >> > hunch > >> > > > >> tells > >> > > > >>> me that such things should not require into-the-box coding. > Can > >> > anybody > >> > > > >>> help? > >> > > > >> > >> > > > >> What exactly do you want? Add your custom regular expressions? > The > >> > > > >> regex-urlfilter.txt is the place to write them to. > >> > > > >> > >> > > > >>> > >> > > > >>> Again, the scenario is really rather generic. Let's say we > want to > >> > > > crawl > >> > > > >>> http://www.mysite.com. We can use the regex-urlfilter.txt to > skip > >> > > > loops > >> > > > >> and > >> > > > >>> unncessary file types etc., but only expect to index pages > with > >> > URLs > >> > > > >> like: > >> > > > >>> > http://www.mysite.com/level1pattern/level2pattern/pagepattern.html > >> > . > >> > > > >> > >> > > > >> To do this you must simply make sure your regular expressions > can do > >> > > > this. > >> > > > >> > >> > > > >>> > >> > > > >>> Am I too naive to expect zero Java coding in this case? > >> > > > >> > >> > > > >> No, you can achieve almost all kinds of exotic filtering with > just > >> > the > >> > > > URL > >> > > > >> filters and the regular expressions. > >> > > > >> > >> > > > >> Cheers > >> > > > >>> > >> > > > >> > >> > > > > >> > > > > >> > > > >> > > >> > > > > -- > Lewis >
