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https://issues.apache.org/jira/browse/SOLR-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12678481#action_12678481
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Yonik Seeley commented on SOLR-1045:
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bq. merge multiple Solr indexes into one Solr index
+1
I think Solr should support multiple local indexes (call them fragments?) per
"index" and be able to perform operations such as merging.
I mentioned this here a while ago too:
http://www.lucidimagination.com/search/document/de518893396af002/solr2_onward_and_upward
> Build Solr index using Hadoop MapReduce
> ---------------------------------------
>
> Key: SOLR-1045
> URL: https://issues.apache.org/jira/browse/SOLR-1045
> Project: Solr
> Issue Type: New Feature
> Reporter: Ning Li
> Attachments: SOLR-1045.0.patch
>
>
> The goal is a contrib module that builds Solr index using Hadoop MapReduce.
> It is different from the Solr support in Nutch. The Solr support in Nutch
> sends a document to a Solr server in a reduce task. Here, the goal is to
> build/update Solr index within map/reduce tasks. Also, it achieves better
> parallelism when the number of map tasks is greater than the number of reduce
> tasks, which is usually the case.
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