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From "Ning Li (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1045) Build Solr index using Hadoop MapReduce
Date Tue, 03 Mar 2009 17:58:56 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12678373#action_12678373
] 

Ning Li commented on SOLR-1045:
-------------------------------

If SolrCore supports an indexing-only mode, no resource will be spent on search, which is
not used by the mapreduce job. If you feel this is "good-to-have" instead of "must-have",
then I think this is an important "good-to-have".

> 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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