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https://issues.apache.org/jira/browse/NUTCH-353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12466260
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Ken Krugler commented on NUTCH-353:
-----------------------------------
Another small note about this (see NUTCH-411 for a related but different
problem) ...
If a page (e.g. http://boutell.com) returns a meta refresh header (e.g. <meta
http-equiv="refresh" content="0;url=http://www.boutell.com/";>), and you also
wind up fetching the target page independently, then it looks like you can wind
up with both pages in the crawl results. One entry has a title like
"boutell.com", while the other has the real page title. Or at least I've seen
this a few times in our crawl results.
> pages that serverside forwards will be refetched every time
> -----------------------------------------------------------
>
> Key: NUTCH-353
> URL: https://issues.apache.org/jira/browse/NUTCH-353
> Project: Nutch
> Issue Type: Bug
> Affects Versions: 0.8.1, 0.9.0
> Reporter: Stefan Groschupf
> Assigned To: Andrzej Bialecki
> Priority: Blocker
> Fix For: 0.9.0
>
> Attachments: doNotRefecthForwarderPagesV1.patch
>
>
> Pages that do a serverside forward are not written with a status change back
> into the crawlDb. Also the nextFetchTime is not changed.
> This causes a refetch of the same page again and again. The result is nutch
> is not polite and refetching the forwarding and target page in each segment
> iteration. Also it effects the scoring since the forward page contribute it's
> score to all outlinks.
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