Detail description of the Reducer phases?


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More MapReduce Interview Questions

what are the most common input formats defined in Hadoop?

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How can you add the arbitrary key-value pairs in your mapper?

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What is identity mapper and chain mapper?

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What is MapReduce? What are the syntax you use to run a MapReduce program?

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What are the steps involved in MapReduce framework?

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how can you check whether Namenode is working beside using the jps command?

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what job does the conf class do?

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Whether the output of mapper or output of partitioner written on local disk?

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Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

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What is a Speculative Execution in Hadoop MapReduce?

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What do you mean by inputformat?

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How to create custom key and custom value in MapReduce Job?

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