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From Kai Voigt...@123.org>
Subject Re: Counting records
Date Mon, 23 Jul 2012 14:32:01 GMT

an additional idea is to use the counter API inside the framework.

http://diveintodata.org/2011/03/15/an-example-of-hadoop-mapreduce-counter/ has a good example.


Am 23.07.2012 um 16:25 schrieb Peter Marron:

> I am a complete noob with Hadoop and MapReduce and I have a question that
> is probably silly, but I still don't know the answer.
> To simplify (a fair bit) I want to count all the records that meet specific criteria.
> I would like to use MapReduce because I anticipate large sources and I want to
> get the performance and reliability that MapReduce offers.

Kai Voigt

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