Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
MapReduce, mail # user - Re: reducer gets values with empty attributes

Copy link to this message
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.

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);
> Reducer gets keys, but values  has empty  fields (like id and etc) , although map correctly assigns these fields to each value.
> Any ideas why this happens?
> Thanks.
> Alex.
alxsss@... 2013-05-01, 18:12