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From "Shrivastava, Himnshu (GE Global Research, Non-GE)" <Himnshu.Shrivast...@ge.com>
Subject Query map reduce
Date Wed, 18 Jun 2014 12:44:53 GMT

I am writing a simple map reduce code in java. How can I get multiple key- value pairs as
output from a single mapper. If there is any preferred link for that, please let me know.
I tried using hash map for it but there exist some errors in the same. Can an object of output
collector emit multiple key value pairs ?


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