[
http://issues.apache.org/jira/browse/NUTCH-240?page=comments#action_12373256 ]
Shawn Gervais commented on NUTCH-240:
-------------------------------------
This change seems to have caused an error to be thrown:
060405 034711 Generator: Partitioning selected urls by host, for politeness.
Exception in thread "main" java.lang.RuntimeException: class
org.apache.nutch.crawl.Generator$SelectorInverseMapper not
org.apache.hadoop.mapred.Mapper
at org.apache.hadoop.conf.Configuration.setClass(Configuration.java:262)
at org.apache.hadoop.mapred.JobConf.setMapperClass(JobConf.java:249)
at org.apache.nutch.crawl.Generator.generate(Generator.java:263)
at org.apache.nutch.crawl.Generator.main(Generator.java:317)
Just FYI.
> Scoring API: extension point, scoring filters and an OPIC plugin
> ----------------------------------------------------------------
>
> Key: NUTCH-240
> URL: http://issues.apache.org/jira/browse/NUTCH-240
> Project: Nutch
> Type: Improvement
> Versions: 0.8-dev
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Attachments: Generator.patch.txt, patch.txt, patch1.txt
>
> This patch refactors all places where Nutch manipulates page scores, into a
> plugin-based API. Using this API it's possible to implement different scoring
> algorithms. It is also much easier to understand how scoring works.
> Multiple scoring plugins can be run in sequence, in a manner similar to
> URLFilters.
> Included is also an OPICScoringFilter plugin, which contains the current
> implementation of the scoring algorithm. Together with the scoring API it
> provides a fully backward-compatible scoring.
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