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From Zhong Wang <wangzhong....@gmail.com>
Subject Re: merging multiple mapper's outputs
Date Sun, 16 Aug 2009 15:42:07 GMT
On Sun, Aug 16, 2009 at 10:00 AM, Zheng Shao<zshao@facebook.com> wrote:
> Does hadoop have the capability of merging multiple mappers(on the same
> node) output into a single one, to speed up the shuffling phase? Is there a
> JIRA that I can find more information about it?

Do you mean outputs from multiple mapper tasks or multiple mapper
functions? Could Combiner help?



-- 
Zhong Wang

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