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http://issues.apache.org/jira/browse/NUTCH-192?page=comments#action_12365536 ] 

Andrzej Bialecki  commented on NUTCH-192:
-----------------------------------------

Yes, that's an issue - due to the way WritableName is initialized it's 
difficult to add more mappings later, in a predictable fashion. Unless we read 
the mappings from an external resource, like a Configuration property.

We can proceed in two ways now - either we commit to Nutch all parts that we 
have (and move the Nutch-specific mappings to be initalized in MapWritable), or 
we expend additional effort to clean it up, load the mappings from a resource, 
and then commit MapWritable-related parts to Hadoop.

> meta data support for CrawlDatum
> --------------------------------
>
>          Key: NUTCH-192
>          URL: http://issues.apache.org/jira/browse/NUTCH-192
>      Project: Nutch
>         Type: Improvement
>     Versions: 0.8-dev
>     Reporter: Stefan Groschupf
>      Fix For: 0.8-dev
>  Attachments: metadata010206.patch, metadata060206.patch, 
> metadata300106.patch, metadata310106.patch
>
> Supporting meta data in CrawlDatum would help to get a set of new nutch 
> features realized and makes a lot possible to smaller special focused search 
> engines.

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