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Posted to dev@nutch.apache.org by "Markus Jelsma (JIRA)" <ji...@apache.org> on 2011/07/10 20:19:59 UTC

[jira] [Commented] (NUTCH-1037) Deduplicate anchors before indexing

    [ https://issues.apache.org/jira/browse/NUTCH-1037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13062780#comment-13062780 ] 

Markus Jelsma commented on NUTCH-1037:
--------------------------------------

I'd choose a fix instead a new config option. I've done more checks and see no point in having many hundreds (really!) exact or case-similar values for the anchors field. It slows down indexing dramatically (when working in the millions) and increases index size.

Comments?

> Deduplicate anchors before indexing
> -----------------------------------
>
>                 Key: NUTCH-1037
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1037
>             Project: Nutch
>          Issue Type: Improvement
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>             Fix For: 1.4, 2.0
>
>
> Anchors are not deduplicated before indexing. This can result in a very high number of similar and identical anchors being indexed. Before indexing, anchors must be deduplicated at least on case.
> Should this be implemented as a fix or as a new feature that needs to be configured?

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