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From Todd <bit1...@163.com>
Subject Combiner doesn't take effect if there is no reducer phrase
Date Sat, 20 Dec 2014 16:53:19 GMT
Hi, Hadoopers,
It looks to me that when I provide the combiner but doesn't provide the reducer,the combiner
doesn't take effect or combiner doesn't get run at all.
I don't understand here because the combiner is running on the Mapper node, so could some
one please explain the behavior of Combiner?Thanks.
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