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courses:mapreduce-tutorial:step-24 [2012/01/27 21:28]
straka
courses:mapreduce-tutorial:step-24 [2012/01/27 21:32]
straka
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 } }
 </file> </file>
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 +A mapper which processes (key, value) pairs of types (Kin, Vin) and produces (key, value) pairs of types (Kout, Vout) must be a subclass of ''Mapper<Kin, Vin, Kout, Vout>''. In our case, ''TheMapper'' is subclass of ''Mapper<Text, Text, Text, Text>''.
  
 ===== Running the job ===== ===== Running the job =====

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