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From "Julien Nioche (JIRA)" <>
Subject [jira] Created: (NUTCH-753) Prevent new Fetcher to retrieve the robots twice
Date Mon, 07 Sep 2009 18:33:57 GMT
Prevent new Fetcher to retrieve the robots twice

                 Key: NUTCH-753
             Project: Nutch
          Issue Type: Improvement
          Components: fetcher
    Affects Versions: 1.0.0
            Reporter: Julien Nioche

The new Fetcher which is now used by default handles the robots file directly instead of relying
on the protocol. The options Protocol.CHECK_BLOCKING and Protocol.CHECK_ROBOTS are set to
false to prevent fetching the robots.txt twice (in Fetcher + in protocol), which avoids calling
robots.isAllowed. However in practice the robots file is still fetched as there is a call
to robots.getCrawlDelay() a bit further which is not covered by the if (Protocol.CHECK_ROBOTS).

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