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Mention what is the hadoop mapreduce apis contract for a key and value class?


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More MapReduce Interview Questions

What is sqoop in Hadoop ?

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What is MapReduce in Hadoop?

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Can we set the number of reducers to zero in MapReduce?

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What are the main configuration parameters in a MapReduce program?

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What is SequenceFileInputFormat in Hadoop MapReduce?

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what is "map" and what is "reducer" in Hadoop?

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What are combiners? When should I use a combiner in my MapReduce Job?

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what is storage and compute nodes?

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What is the function of mapreducer partitioner?

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What is shuffling in mapreduce?

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How to change a number of mappers running on a slave in MapReduce?

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What is an identity mapper and identity reducer?

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