Changing "mapred.reduce.tasks" makes various results on recommender

[Y. Sakamoto]

Hi,

I'm using Hadoop-based and non-Hadoop-based recommender.

When I change only hadoop parameter "mapred.reduce.tasks",
 the recommender result also changed.
 (I cannot gain same result.)

Why is it happen?


Thanks

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       Y. Sakamoto
           phonypian...@gmail.com
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