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MapReduce >> mail # user >> Re: MAP_INPUT_RECORDS counter in the reducer

Rahul Bhattacharjee 2013-09-18, 03:09
Shahab Yunus 2013-09-18, 13:46
Yaron Gonen 2013-09-20, 09:12
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MAP_INPUT_RECORDS counter in the reducer
Is there a way for the reducer to get the total number of input records to
the map phase?
For example, I want the reducer to normalize a sum by dividing it in the
number of records. I tried getting the value of that counter by using the


in the reducer code, but I got 0.

Shahab Yunus 2013-09-17, 13:49