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What is a partitioner and how the user can control which key will go to which reducer?


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More MapReduce Interview Questions

What is a map side join?

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What is a RecordReader in Hadoop MapReduce?

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What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

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Mention Hadoop core components?

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What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?

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What is the difference between map and reduce?

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What does conf.setmapper class do?

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Why Hadoop MapReduce?

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what is storage and compute nodes?

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What is mapper in map reduce?

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It can be possible that a Job has 0 reducers?

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

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