Explain the Reducer's reduce phase?


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More MapReduce Interview Questions

What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

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Can MapReduce program be written in any language other than Java?

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How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?

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

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How is reporting controlled in hadoop?

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Write a Mapreduce Program for Character Count ?

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What is the function of mapreduce partitioner?

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How many times combiner is called on a mapper node in Hadoop?

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What is Reducer in MapReduce?

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

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

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Why do we need MapReduce during Pig programming?

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