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https://issues.apache.org/jira/browse/NUTCH-963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12987559#action_12987559
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Markus Jelsma commented on NUTCH-963:
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The class works fine although i did add a commit in the reducer's close method.
I propose changing the name Solr404Deleter to something more generic,
_solrclean_ or _solrpurge_ etc. This is because we might also use this feature
to delete documents for pages that are moved but return a HTTP permanent
redirect instead of a 404.
> Add support for deleting Solr documents with STATUS_DB_GONE in CrawlDB (404
> urls)
> ---------------------------------------------------------------------------------
>
> Key: NUTCH-963
> URL: https://issues.apache.org/jira/browse/NUTCH-963
> Project: Nutch
> Issue Type: New Feature
> Components: indexer
> Affects Versions: 2.0
> Reporter: Claudio Martella
> Assignee: Markus Jelsma
> Priority: Minor
> Fix For: 1.3, 2.0
>
> Attachments: Solr404Deleter.java
>
>
> When issuing recrawls it can happen that certain urls have expired (i.e. URLs
> that don't exist anymore and return 404).
> This patch creates a new command in the indexer that scans the crawldb
> looking for these urls and issues delete commands to SOLR.
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