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


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More MapReduce Interview Questions

What is the key- value pair in MapReduce?

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Explain job scheduling through JobTracker

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Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?

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Why can aggregation not be done in Mapper in MapReduce?

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Where is Mapper output stored?

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Can you tell us how many daemon processes run on a hadoop system?

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What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?

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How to create custom key and custom value in MapReduce Job?

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What is Combiner in MapReduce?

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What does a 'MapReduce Partitioner' do?

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

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Explain what is “map” and what is "reducer" in hadoop?

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