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Is it mandatory to set input and output type/format in MapReduce?


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More MapReduce Interview Questions

What is the difference between Reducer and Combiner in Hadoop MapReduce?

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Why do we need MapReduce during Pig programming?

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What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

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What is identity mapper and reducer? In which cases can we use them?

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What is SequenceFileInputFormat?

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What are the benefits of Spark over MapReduce?

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Does Partitioner run in its own JVM or shares with another process?

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What is the need of MapReduce?

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How do Hadoop MapReduce works?

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How to write a custom partitioner for a Hadoop MapReduce job?

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What are ‘maps’ and ‘reduces’?

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In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

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