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Mention when to use Map reduce mode?


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More MapReduce Interview Questions

Explain the differences between a combiner and reducer

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What happens when a datanode fails ?

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Mention what are the main configuration parameters that user need to specify to run mapreduce job?

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What is sqoop in Hadoop ?

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

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Why MapReduce uses the key-value pair to process the data?

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How do Hadoop MapReduce works?

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What are the identity mapper and reducer in MapReduce?

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Define speculative execution?

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What is the need of MapReduce in Hadoop?

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Explain the Reducer's Sort phase?

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Can we submit the mapreduce job from slave node?

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