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https://issues.apache.org/jira/browse/NUTCH-923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923896#action_12923896
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Andrzej Bialecki commented on NUTCH-923:
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This sounds useful, though the implementation needs to keep the following in
mind:
* you _assume_ that the lang field will have a nice predictable value, but
unless you sanitize the values you can't assume anything... example: one page I
saw had a language metadata set to a random string 8kB long with various
control chars and '\0'-s.
* again, if you don't sanitize and control the total number of unique values in
the source field, you could end up with a number of fields approaching
infinity, and Solr would melt down...
> Multilingual support for Solr-index-mapping
> -------------------------------------------
>
> Key: NUTCH-923
> URL: https://issues.apache.org/jira/browse/NUTCH-923
> Project: Nutch
> Issue Type: Improvement
> Components: indexer
> Affects Versions: 1.2
> Reporter: Matthias Agethle
> Assignee: Markus Jelsma
> Priority: Minor
>
> It would be useful to extend the mapping-possibilites when indexing to solr.
> One useful feature would be to use the detected language of the html page
> (for example via the language-identifier plugin) and send the content to
> corresponding language-aware solr-fields.
> The mapping file could be as follows:
> <field dest="lang" source="lang"/>
> <field dest="title_${lang}" source="title" />
> so that the title-field gets mapped to title_en for English-pages and
> tilte_fr for French pages.
> What do you think? Could this be useful also to others?
> Or are there already other solutions out there?
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