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MapReduce >> mail # user >> what's the default reducer number?

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Re: what's the default reducer number?
Hi Lin

The default value for number of reducers is 1


It is not determined by data volume. You need to specify the number of
reducers for your mapreduce jobs as per your data volume.

Bejoy KS

On Tue, Sep 11, 2012 at 4:53 PM, Jason Yang <[EMAIL PROTECTED]>wrote:

> Hi, all
> I was wondering what's the default number of reducer if I don't set it in
> configuration?
> Will it change dynamically according to the output volume of Mapper?
> --
> YANG, Lin