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From Owen O'Malley <omal...@apache.org>
Subject Re: General questions about Map-Reduce
Date Mon, 12 Jan 2009 01:21:51 GMT
On Jan 11, 2009, at 5:50 AM, tienduc_dinh wrote:

> - Does Map-Reduce support parallel writing/reading ?

Yes. The maps all read in parallel with each other and the reduces all  
write in parallel with each other.

> - What happens after the Map-Reduce operation ?

The OutputFormat usually writes the output to HDFS.

-- Owen

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