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From Doğacan Güney (JIRA) <>
Subject [jira] Commented: (NUTCH-882) Design a Host table in GORA
Date Wed, 15 Sep 2010 12:01:35 GMT


Doğacan Güney commented on NUTCH-882:

I would like to start implementing the idea proposed by Andrzej. I have one question: I would
like Host information to be accessible to plugins as well. Unfortunately, this will mean yet
another API break for plugins. Should we do it like MR and introduce a Context object? So
a typical plugin would look like this:

public void filter(String url, WebPage page, Context context); // context object will have
a host in it for now. In the future, it may have other objects.

What do you think?

> Design a Host table in GORA
> ---------------------------
>                 Key: NUTCH-882
>                 URL:
>             Project: Nutch
>          Issue Type: New Feature
>    Affects Versions: 2.0
>            Reporter: Julien Nioche
>            Assignee: Julien Nioche
>             Fix For: 2.0
>         Attachments: NUTCH-882-v1.patch
> Having a separate GORA table for storing information about hosts (and domains?) would
be very useful for : 
> * customising the behaviour of the fetching on a host basis e.g. number of threads, min
time between threads etc...
> * storing stats
> * keeping metadata and possibly propagate them to the webpages 
> * keeping a copy of the robots.txt and possibly use that later to filter the webtable
> * store sitemaps files and update the webtable accordingly
> I'll try to come up with a GORA schema for such a host table but any comments are of
course already welcome 

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