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From Huy Phan <dac...@gmail.com>
Subject Re: map output not euqal to reduce input
Date Thu, 10 Dec 2009 16:12:37 GMT
Do you have any combiner implemented in your job ?

On 12/10/2009 09:11 PM, Gang Luo wrote:
> Hi all,
> after finish one mapreduce job, the statistics shows that the number of records map generated
is not equal to the number of records that reduce input. It says:
>
> Map output records=150000
> Reduce input records=93282
>
> I think it is abnormal. Please give me some ideas how this happen and how to fix it.
Thanks.
>
>
> -Gang
>
>
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