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From "Lewis John McGibbney (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NUTCH-2184) Enable IndexingJob to function with no crawldb
Date Thu, 29 Jun 2017 16:48:00 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16068597#comment-16068597
] 

Lewis John McGibbney commented on NUTCH-2184:
---------------------------------------------

Hi [~markus17] I need to finish the bloody MR tests over at https://github.com/apache/nutch/pull/95.
I am very tight on cycles right now. If you can pick up the patch and want to work with it
then by all means please go ahead ;)

> 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: 1.14
>
>         Attachments: NUTCH-2184.patch, NUTCH-2184v2.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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