org.apache.nutch.crawl
Class LinkDbMerger
java.lang.Object
org.apache.hadoop.conf.Configured
org.apache.nutch.crawl.LinkDbMerger
- All Implemented Interfaces:
- Configurable
- public class LinkDbMerger
- extends Configured
This tool merges several LinkDb-s into one, optionally filtering
URLs through the current URLFilters, to skip prohibited URLs and
links.
It's possible to use this tool just for filtering - in that case
only one LinkDb should be specified in arguments.
If more than one LinkDb contains information about the same URL,
all inlinks are accumulated, but only at most db.max.inlinks
inlinks will ever be added.
If activated, URLFilters will be applied to both the target URLs and
to any incoming link URL. If a target URL is prohibited, all
inlinks to that target will be removed, including the target URL. If
some of incoming links are prohibited, only they will be removed, and they
won't count when checking the above-mentioned maximum limit.
- Author:
- Andrzej Bialecki
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LinkDbMerger
public LinkDbMerger(Configuration conf)
merge
public void merge(Path output,
Path[] dbs,
boolean filter)
throws Exception
- Throws:
Exception
main
public static void main(String[] args)
throws Exception
- Parameters:
args
-
- Throws:
Exception
Copyright © 2006 The Apache Software Foundation