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From Jean-Marc Spaggiari <jean-m...@spaggiari.org>
Subject MapReduce: Reducers partitions.
Date Wed, 10 Apr 2013 12:49:26 GMT
Hi,

quick question. How are the data from the map tasks partitionned for
the reducers?

If there is 1 reducer, it's easy, but if there is more, are all they
same keys garanteed to end on the same reducer? Or not necessary?  If
they are not, how can we provide a partionning function?

Thanks,

JM

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