Hi, the hadoop io system is read only, so you can not update a file. However if I'm sure you can hack the link db creation code and add the url filter that is already used for the crawldb. May be this is already in the code, if not it would be good since it minimize spam links to take effect in the ranking.
Stefan On 07.07.2006, at 09:50, <[EMAIL PROTECTED]> wrote: > Thanks Stefan. > So one has to iterate and re-write the whole graph, and there is no > way to just modify it on the fly by, for example, removing specific > links/pages? > > Thanks, > Otis > > ----- Original Message ---- > From: Stefan Groschupf <[EMAIL PROTECTED]> > To: [email protected] > Sent: Friday, July 7, 2006 1:52:24 AM > Subject: Re: [Nutch-general] Link db (traversal + modification) > > Hi Otis, > > the link graph live in the linkdb. > I suggest to write a small map reduce tool that reads the existing > linkDb filter the pages you want to remove and write the result back > to disk. > This will be just a couble lines of code. > The hadoop package comes with some nice map reduce examples. > > Stefan > > > On 06.07.2006, at 22:47, <[EMAIL PROTECTED]> wrote: > >> Hi, >> >> What's the best way to travere the graph of all fetched pages and >> optionally modify it (e.g. remove a page because you know it's spam)? >> I looked at various Nutch classes, and only LinksDbReader looks >> like it let's you iterate through all links (and for each link get >> its inlinks). Is this right? >> >> But how would one go about modifying the links db? >> Perhaps I should be asking about where/how the links db is stored >> on disk, and whether one should just access and modify that data >> directly on disk? >> >> Thanks, >> Otis >> >> >> > > > Using Tomcat but need to do more? Need to support web services, > security? > Get stuff done quickly with pre-integrated technology to make your > job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache > Geronimo > http://sel.as-us.falkag.net/sel? > cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Nutch-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/nutch-general > > > > Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Nutch-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nutch-general
