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Explain what are the basic parameters of a mapper?


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More MapReduce Interview Questions

Explain the features of Apache Spark because of which it is superior to Apache MapReduce?

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Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.

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What is the next step after Mapper or MapTask?

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Where is the output of Mapper written in Hadoop?

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Why MapReduce uses the key-value pair to process the data?

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What is heartbeat in hdfs?

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What is Mapper in Hadoop MapReduce?

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What is Shuffling and Sorting in a MapReduce?

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How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?

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What is the default value of map and reduce max attempts?

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Is YARN a replacement of Hadoop MapReduce?

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What do you mean by data locality?

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