Is key-value store database a good option for full-text search storage?

Would it be a good option to use key-value store database like cassandra and riak for storing your开发者_JAVA技巧 texts, which will be used for full-text search? If it is not recommendable, what are the reason for not going this path? Anybody has any experience on using key-value store for full-text search store?

Thanks for sharing.

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Riak also has the Riak Search feature.

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For that I recommend you to look at tjake's excellent project called Lucandra (Lucandra - A Cassandra Backend for Lucene/Solr)