[jira] Commented: (NUTCH-530) Add a combiner to improve performance on updatedb

["Doğacan Güney (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NUTCH-530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12525418 ] 

Doğacan Güney commented on NUTCH-530:
-------------------------------------

Andrzej, what do you think about this one in light of Emmanuel's last comment? I am still uneasy about ScoringFilters running twice,  but I think Emmanuel is right that semantics don't change.

> Add a combiner to improve performance on updatedb
> -------------------------------------------------
>
>                 Key: NUTCH-530
>                 URL: https://issues.apache.org/jira/browse/NUTCH-530
>             Project: Nutch
>          Issue Type: Improvement
>         Environment: java 1.6
>            Reporter: Emmanuel Joke
>            Assignee: Emmanuel Joke
>             Fix For: 1.0.0
>
>         Attachments: NUTCH-530.patch
>
>
> We have a lot of similar links with status "linked" generated at the ouput of the map task when we try to update the crawldb based on the segment fetched.
> We can use a combiner to improve the performance.

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