MongoDB: What's the point of using MapReduce without parallelism?

Posted by netvope on Stack Overflow See other posts from Stack Overflow or by netvope
Published on 2010-05-08T14:13:45Z Indexed on 2010/05/08 14:18 UTC
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mongodb

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mapreduce

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parallel-processing

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couchdb

Quoting http://www.mongodb.org/display/DOCS/MapReduce#MapReduce-Parallelism

As of right now, MapReduce jobs on a single mongod process are single threaded

Without parallelism, what are the benefits of MapReduce compared to simpler or more traditional methods for queries and data aggregation?

To avoid confusion: the question is NOT "what are the benefits of document-oriented DB over traditional relational DB"

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