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From "Sebastian Nagel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (NUTCH-1525) Generator to record external links even when db.ignore.external.links set to true
Date Fri, 26 Apr 2013 19:32:16 GMT

     [ https://issues.apache.org/jira/browse/NUTCH-1525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebastian Nagel updated NUTCH-1525:
-----------------------------------

    Fix Version/s: 1.8
    
> Generator to record external links even when  db.ignore.external.links set to true
> ----------------------------------------------------------------------------------
>
>                 Key: NUTCH-1525
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1525
>             Project: Nutch
>          Issue Type: Improvement
>          Components: generator
>            Reporter: Lewis John McGibbney
>            Priority: Minor
>             Fix For: 2.3, 1.8
>
>
> When fetching pages from specific domains we have various options e.g. use urlfilters,
set the above property to true before injecting urls into the webdb etc. However with the
former, it is recognised that complex regex can slow down processing and with the latter it
means we disregard a number of urls which could potentially become useful in the future.
> Unfortunately there is no way to record external links encountered for future processing,
although the wiki suggests that a very small patch to the generator code can allow you to
log these links to hadoop.log. although this is better, a more robusts storage mechanism would
be preferred. This may tie in with custom counters we've already specified or may require
new counters to be implemented.  

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