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MapReduce, mail # user - Re: reducer gets values with empty attributes


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Re: reducer gets values with empty attributes
Mahesh Balija 2013-04-30, 06:33
Hi Alex,

             Can you please attach your code? and the sample input data.

Best,
Mahesh Balija,
Calsoft Labs.
On Tue, Apr 30, 2013 at 2:29 AM, <[EMAIL PROTECTED]> wrote:

>
> Hello,
>
> I try to write mapreduce program in hadoop -1.0.4. using mapred libs. I have a map function which gets
>
> keys and creates a different object with a few attributes like id and etc and passes it to reducer function using
>
>
>  output.collect(key, value);
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> Reducer gets keys, but values  has empty  fields (like id and etc) , although map correctly assigns these fields to each value.
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> Any ideas why this happens?
>
> Thanks.
> Alex.
>
>