Define speculative execution?


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More MapReduce Interview Questions

What is the Job interface in MapReduce framework?

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How do you stop a running job gracefully?

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In Map Reduce why map write output to Local Disk instead of HDFS?

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Mention what are the main configuration parameters that user need to specify to run mapreduce job?

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What are the configuration parameters in the 'MapReduce' program?

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What is the need of key-value pair to process the data in MapReduce?

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What is the utility of using Writable Comparable Custom Class in Map Reduce code?

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How to set which framework would be used to run mapreduce program?

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How do Hadoop MapReduce works?

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What is a RecordReader in Hadoop MapReduce?

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What combiners is and when you should use a combiner in a MapReduce Job?

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Describe what happens to a mapreduce job from submission to output?

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