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courses:mapreduce-tutorial:step-8 [2012/01/25 15:16] straka |
courses:mapreduce-tutorial:step-8 [2012/01/25 15:17] 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 ===== | ||