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What is RecordReader in a Map Reduce?


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More MapReduce Interview Questions

Where is the output of Mapper written in Hadoop?

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Explain what is distributed cache in mapreduce framework?

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What is identity mapper and chain mapper?

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For a Hadoop job, how will you write a custom partitioner?

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Is it possible to search for files using wildcards?

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When is the reducers are started in a MapReduce job?

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What are the main components of MapReduce Job?

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Where is Mapper output stored?

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

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when do reducers play their role in a mapreduce task?

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What are the identity mapper and reducer in MapReduce?

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What is a scarce system resource?

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