[jira] Commented: (NUTCH-289) CrawlDatum should store IP address

["Uros Gruber (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/NUTCH-289?page=comments#action_12450315 ] 
            
Uros Gruber commented on NUTCH-289:
-----------------------------------

One question. Why does IP need to be in CrawlDatum and not in metadata?

> CrawlDatum should store IP address
> ----------------------------------
>
>                 Key: NUTCH-289
>                 URL: http://issues.apache.org/jira/browse/NUTCH-289
>             Project: Nutch
>          Issue Type: Bug
>          Components: fetcher
>    Affects Versions: 0.8
>            Reporter: Doug Cutting
>         Attachments: ipInCrawlDatumDraftV1.patch, ipInCrawlDatumDraftV4.patch, ipInCrawlDatumDraftV5.1.patch, ipInCrawlDatumDraftV5.patch
>
>
> If the CrawlDatum stored the IP address of the host of it's URL, then one could:
> - partition fetch lists on the basis of IP address, for better politeness;
> - truncate pages to fetch per IP address, rather than just hostname.  This would be a good way to limit the impact of domain spammers.
> The IP addresses could be resolved when a CrawlDatum is first created for a new outlink, or perhaps during CrawlDB update.

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