[jira] [Commented] (NUTCH-2993) ScoringDepth plugin to skip depth check based on URL Pattern

["Sebastian Nagel (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NUTCH-2993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17745061#comment-17745061 ] 

Sebastian Nagel commented on NUTCH-2993:
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Hi [~markus17], the updated patch looks good. I'll open a PR for easier merging. Alternatively, feel free to apply the patch to master and commit it!

> Now the maxDepth resets if it does NOT match/find the pattern.

It sounds plausible to reset the increased depth back to the default value if the URL isn't matched.

Generally, I agree that steering a crawler and keep it focused is always difficult. We also should update the plugin scoring-similarity, not sure whether it's still working with a recent Hadoop and a quite old Mahout version combined. Interestingly, [SimilarityScoringFilter|https://cwiki.apache.org/confluence/display/NUTCH/SimilarityScoringFilter] mentions the filtering of URLs/outlinks as a nice-to-have option.

> ScoringDepth plugin to skip depth check based on URL Pattern
> ------------------------------------------------------------
>
>                 Key: NUTCH-2993
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2993
>             Project: Nutch
>          Issue Type: Improvement
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>            Priority: Minor
>             Fix For: 1.20
>
>         Attachments: NUTCH-2993-1.15-1.patch, NUTCH-2993-1.15.patch
>
>
> We do not want some crawl to go deep and broad, but instead focus it on a narrow section of sites.
> This patch overrides maxDepth for outlinks of URLs matching a configured pattern. URL not matching the pattern get the default max depth value configured.



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