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


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More MapReduce Interview Questions

Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?

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What are combiners? When should I use a combiner in my MapReduce Job?

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List the network requirements for using Hadoop ?

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Explain the process of spilling in Hadoop MapReduce?

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What is a mapreduce algorithm?

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What is the Hadoop MapReduce API contract for a key and value Class?

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How to submit extra files(jars, static files) for MapReduce job during runtime?

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Mention what is the hadoop mapreduce apis contract for a key and value class?

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What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?

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What is the key- value pair in Hadoop MapReduce?

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What is Hadoop Map Reduce ?

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How do ‘map’ and ‘reduce’ work?

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