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I am making a research about Machine Learning and planning to use NoSQL databases. I know that MongoDB is a powerful solution.

However I want to learn that where Hadoop stands for MongoDB side.

My question is that: Does it a core engine for MongoDB or can I use Hadoop itself without using MongoDB(does it has a benefit using just it) or what benefit I can get from using both Hadoop and MongoDB?

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Hadoop comes with HBase - a system similar to BigTable. If you want to use Hadoop you may want to look into using that in place of MongoDB. –  ConcernedOfTunbridgeWells Feb 24 '13 at 0:05
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closed as not constructive by dezso, Mark Storey-Smith, Paul White, RolandoMySQLDBA, Marian Feb 28 '13 at 8:47

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