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


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More MapReduce Interview Questions

How much space will the split occupy in Mapreduce?

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Explain the differences between a combiner and reducer

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In Hadoop, which file controls reporting in Hadoop?

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what is distributed cache in mapreduce framework?

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What is the fundamental difference between a MapReduce InputSplit and HDFS block?

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How many numbers of reducers run in Map-Reduce Job?

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What are the various InputFormats in Hadoop?

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what is NameNode in Hadoop?

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What does a split do?

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Explain job scheduling through JobTracker

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Define Writable data types in MapReduce?

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When is it not recommended to use MapReduce paradigm for large scale data processing?

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