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What is partitioner and its usage?


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More MapReduce Interview Questions

How does fault tolerance work in mapreduce?

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How many InputSplits is made by a Hadoop Framework?

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When is it suggested to use a combiner in a MapReduce job?

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How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?

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

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What do you mean by inputformat?

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

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Different ways of debugging a job in MapReduce?

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Define Writable data types in Hadoop MapReduce?

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What are the advantages of using mapreduce with hadoop?

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what is storage and compute nodes?

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

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