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courses:mapreduce-tutorial:step-3 [2012/01/24 21:22]
straka 		courses:mapreduce-tutorial:step-3 [2012/01/25 21:33]
straka
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 ====== MapReduce Tutorial : Basic mapper ====== ====== MapReduce Tutorial : Basic mapper ======
  
-The simplest MR job consists of a mapper only.  The input data is divided in several parts, every processed by an independent mapper, and the results are collected in one directory, one file per mapper.+The simplest Hadoop job consists of a mapper only.  The input data is divided in several parts, every processed by an independent mapper, and the results are collected in one directory, one file per mapper. 
 + 
 +The Hadoop framework handles
  
 ===== Example Perl mapper ===== ===== Example Perl mapper =====

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