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Which are the methods in the mapper interface?


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More MapReduce Interview Questions

What is Text Input Format?

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List out Hadoop's three configuration files?

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What is Combiner in MapReduce?

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How do you stop a running job gracefully?

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What is optimal size of a file for distributed cache?

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Explain what combiners are and when you should use a combiner in a mapreduce job?

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

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How to specify more than one directory as input in the Hadoop MapReduce Program?

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

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what is a Task Tracker in Hadoop?

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what does the text input format do?

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What do you mean by data locality?

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