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https://issues.apache.org/jira/browse/NUTCH-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15059417#comment-15059417
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Sujen Shah commented on NUTCH-2184:
-----------------------------------
Thanks [~lewismc]
> Enable IndexingJob to function with no crawldb
> ----------------------------------------------
>
> Key: NUTCH-2184
> URL: https://issues.apache.org/jira/browse/NUTCH-2184
> Project: Nutch
> Issue Type: Improvement
> Components: indexer
> Reporter: Lewis John McGibbney
> Assignee: Lewis John McGibbney
> Fix For: 1.12
>
> Attachments: NUTCH-2184.patch
>
>
> Sometimes when working with distributed team(s), we have found that we can
> 'loose' data structures which are currently considered as critical e.g.
> crawldb, linkdb and/or segments.
> In my current scenario I have a requirement to index segment data with no
> accompanying crawldb or linkdb.
> Absence of the latter is OK as linkdb is optional however currently in
> [IndexerMapReduce|https://github.com/apache/nutch/blob/trunk/src/java/org/apache/nutch/indexer/IndexerMapReduce.java]
> crawldb is mandatory.
> This ticket should enhance the IndexerMapReduce code to support the use case
> where you ONLY have segments and want to force an index for every record
> present.
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