How can we assure that the values regarding a particular key goes to the same reducer?


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More MapReduce Interview Questions

In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

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What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?

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Explain combiners.

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

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What is the role of a MapReduce partitioner?

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what does the text input format do?

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What can be optimum value for Reducer?

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What happens if the quantity of the reducer is 0 in mapreduce?

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Clarify what combiners are and when you should utilize a combiner in a map reduce job?

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What is the problem with the small file in Hadoop?

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Explain the process of spilling in Hadoop MapReduce?

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List the network requirements for using Hadoop ?

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