No, it doesn't if you co-group more than 1 relations-
https://github.com/apache/pig/blob/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/CombinerOptimizer.java#L120
On Wed, Apr 16, 2014 at 8:25 AM, Abhishek Agarwal <[EMAIL PROTECTED]>wrote:
 
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