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otis edited comment on NUTCH-628 at 4/17/08 1:37 PM: ----------------------------------------------------------------- Enis' DomainStatistics tool from NUTCH-439. (not a solution to this issue, just something that may go well with it) Here is example usage, for anyone who wants to try DomainStatistics (works nicely): $ bin/nutch org.apache.nutch.util.domain.DomainStatistics hdfs://nn:9000/user/otis/crawl/crawldb/current hdfs://nn:9000/user/otis/ds-host host 8 You can then -cat ds-host file from DFS and pipe it to sort -nrk1 for sorting by count, higher count first. was (Author: otis): Enis' DomainStatistics tool from NUTCH-439. (not a solution to this issue, just something that may go well with it) > Host database to keep track of host-level information > ----------------------------------------------------- > > Key: NUTCH-628 > URL: https://issues.apache.org/jira/browse/NUTCH-628 > Project: Nutch > Issue Type: New Feature > Components: fetcher, generator > Reporter: Otis Gospodnetic > Attachments: NUTCH-628-DomainStatistics.patch, NUTCH-628-HostDb.patch > > > Nutch would benefit from having a DB with per-host/domain/TLD information. > For instance, Nutch could detect hosts that are timing out, store information > about that in this DB. Segment/fetchlist Generator could then skip such > hosts, so they don't slow down the fetch job. Another good use for such a DB > is keeping track of various host scores, e.g. spam score. > From the recent thread on [EMAIL PROTECTED]: > Otis asked: > > While we are at it, how would one go about implementing this DB, as far as > > its structures go? > Andrzej said: > The easiest I can imagine is to use something like <Text, MapWritable>. > This way you could store arbitrary information under arbitrary keys. > I.e. a single database then could keep track of aggregate statistics at > different levels, e.g. TLD, domain, host, ip range, etc. The basic set > of statistics could consist of a few predefined gauges, totals and averages. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.