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courses:mapreduce-tutorial:step-8 [2012/01/25 15:16]
straka
courses:mapreduce-tutorial:step-8 [2012/01/25 15:29]
straka
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 A MR job must have a reducer if it specifies a partitioner. Also, the partitioner is not called if there is only one reducer. A MR job must have a reducer if it specifies a partitioner. Also, the partitioner is not called if there is only one reducer.
  
 +===== Example =====
 +
 +Run a MR job on '/home/straka/wiki/cs-text-medium', which creates a list of unique article names and at the same time list of unique words.
 +
 +{{:courses:mapreduce-tutorial:step-8-solution.txt|Solution.pl}}

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