Hadoop Summit 2012 | Optimizing MapReduce Job PerformanceOptimizing MapReduce job performance is often seen as something of a black art. In order to maximize performance, developers need to understand the inner workings of the MapReduce execution framework and how they are affected by various configuration parameters and MR design patterns. The talk will illustrate the underlying mechanics of job and task execution, including the map side sort/spill, th
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