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What do sorting and shuffling do?


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More MapReduce Interview Questions

What are advantages of Spark over MapReduce?

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

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Where sorting is done in Hadoop MapReduce Job?

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How to set the number of mappers for a MapReduce job?

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Explain what is shuffling in mapreduce?

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In Hadoop, which file controls reporting in Hadoop?

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When the reducers are are started in a mapreduce job?

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How does MapReduce framework view its input internally?

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Explain what you understand by speculative execution

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Explain what does the conf.setmapper class do?

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Is it possible to rename the output file?

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With the help of two examples name the map and reduce function purpose

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