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Define Writable data types in MapReduce?


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More MapReduce Interview Questions

List out Hadoop's three configuration files?

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

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Explain task granularity

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Mention when to use Map reduce mode?

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What is the default input type in MapReduce?

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Is there any point of learning mapreduce, then?

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Where the mapper's intermediate data will be stored?

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Where sorting is done on mapper node or reducer node in MapReduce?

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What happen if the number of the reducer is 0 in MapReduce?

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when do reducers play their role in a mapreduce task?

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What is the job of blend () and repartition () in Map Reduce?

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Is it possible to search for files using wildcards?

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