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What are the four essential parameters of a mapper?


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More MapReduce Interview Questions

What is reduce side join in mapreduce?

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Difference between mapreduce and spark

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What is Output Format in MapReduce?

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What are the data components used by Hadoop?

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What can be optimum value for Reducer?

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Is it mandatory to set input and output type/format in MapReduce?

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what are the most common input formats defined in Hadoop?

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Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?

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how JobTracker schedules a task ?

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What is the difference between an RDBMS and Hadoop?

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How does inputsplit in mapreduce determines the record boundaries correctly?

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Define the Use of MapReduce?

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