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https://issues.apache.org/jira/browse/NUTCH-1980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Markus Jelsma resolved NUTCH-1980.
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Resolution: Fixed
> Jexl expressions for CrawlDbReader
> ----------------------------------
>
> Key: NUTCH-1980
> URL: https://issues.apache.org/jira/browse/NUTCH-1980
> Project: Nutch
> Issue Type: New Feature
> Components: crawldb
> Reporter: Markus Jelsma
> Assignee: Markus Jelsma
> Fix For: 1.11
>
> Attachments: NUTCH-1980-1.9.patch, NUTCH-1980-1.9.patch,
> NUTCH-1980-1.9.patch, NUTCH-1980.patch
>
>
> Jexl expression support for the CrawlDbReader. This allows you to read items
> from the database based on their metadata with flexilibity and boolean logic.
> Some examples
> {code}
> * Get all english pages
> -expr "lang=en"
> * Get all english pages that have a low response time
> -expr "lang=en && _rs_ > 5000"
> {code}
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