[jira] Created: (NUTCH-476) Would like to add a field to the document class for its MD5 signature

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[jira] Created: (NUTCH-476) Would like to add a field to the document class for its MD5 signature

Nick Burch (Jira)
Would like to add a field to the document class for its MD5 signature
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                 Key: NUTCH-476
                 URL: https://issues.apache.org/jira/browse/NUTCH-476
             Project: Nutch
          Issue Type: Improvement
          Components: indexer
         Environment: all
            Reporter: Linh Pham
            Priority: Minor


During indexing a file, if an MD5 signature was calculated and stored along with the document  as a default,
it could then be used to remove duplicates from the results on retrieval.


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[jira] Commented: (NUTCH-476) Would like to add a field to the document class for its MD5 signature

Nick Burch (Jira)

    [ https://issues.apache.org/jira/browse/NUTCH-476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12494537 ]

Sami Siren commented on NUTCH-476:
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md5 sum (or any other configurable "digest") is already calculated in fetcher or parser and dedup can be used to remove duplicates.

> Would like to add a field to the document class for its MD5 signature
> ----------------------------------------------------------------------
>
>                 Key: NUTCH-476
>                 URL: https://issues.apache.org/jira/browse/NUTCH-476
>             Project: Nutch
>          Issue Type: Improvement
>          Components: indexer
>         Environment: all
>            Reporter: Linh Pham
>            Priority: Minor
>
> During indexing a file, if an MD5 signature was calculated and stored along with the document  as a default,
> it could then be used to remove duplicates from the results on retrieval.

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[jira] Closed: (NUTCH-476) Would like to add a field to the document class for its MD5 signature

Nick Burch (Jira)
In reply to this post by Nick Burch (Jira)

     [ https://issues.apache.org/jira/browse/NUTCH-476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doğacan Güney closed NUTCH-476.
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    Resolution: Invalid

Such a field is already stored in index (as "digest"). You can change how it is calculated by db.signature.class option.

> Would like to add a field to the document class for its MD5 signature
> ----------------------------------------------------------------------
>
>                 Key: NUTCH-476
>                 URL: https://issues.apache.org/jira/browse/NUTCH-476
>             Project: Nutch
>          Issue Type: Improvement
>          Components: indexer
>         Environment: all
>            Reporter: Linh Pham
>            Priority: Minor
>
> During indexing a file, if an MD5 signature was calculated and stored along with the document  as a default,
> it could then be used to remove duplicates from the results on retrieval.

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