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https://issues.apache.org/jira/browse/NUTCH-1434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419125#comment-13419125
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Lewis John McGibbney commented on NUTCH-1434:
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Can we clarify exactly what we mean by NoIndex? If currently we simpky remove 
some fields then index the rest then this is not good practice. I get this 
patch in that it enables us to delete such documents therefore being 
responsible in the content residing within the index, to me this doesn't target 
the source of the problem though e.g. that documents are still being passed to 
the indexer even though robots.txt says they are not to be indexed. Or am I 
getting this the wrong way?  
                
> Indexer to delete robots noIndex
> --------------------------------
>
>                 Key: NUTCH-1434
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1434
>             Project: Nutch
>          Issue Type: New Feature
>          Components: indexer
>    Affects Versions: 1.5.1
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>             Fix For: 1.6
>
>         Attachments: NUTCH-1434-1.6-1.patch
>
>
> Nutch does not treat pages with meta robots="noindex" properly. All it does 
> is remove the title and content fields from the parsed data. It does not stop 
> those pages from being indexed, nor can it delete existing pages from the 
> index if they change.

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