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  1. Categories >> Software >> Big Data >> Hadoop >> MapReduce
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When should you use a reducer?

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More MapReduce Interview Questions

Mention what is the next step after mapper or maptask?

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Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?

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A number of combiners can be changed or not in MapReduce?

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What is Shuffling and Sorting in a MapReduce?

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Define Writable data types in MapReduce?

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How to set the number of mappers for a MapReduce job?

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Is YARN a replacement of Hadoop MapReduce?

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

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Is there any point of learning mapreduce, then?

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Name job control options specified by mapreduce.

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What is the function of mapreducer partitioner?

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Explain Working of MapReduce?

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