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Which are the methods in the mapper interface?


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More MapReduce Interview Questions

What is shuffling and sorting in mapreduce?

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What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

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What are the advantages of using map side join in mapreduce?

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Is it possible to rename the output file?

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What is optimal size of a file for distributed cache?

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

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Can we set the number of reducers to zero in MapReduce?

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Explain task granularity

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What is Reduce only jobs?

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how JobTracker schedules a task ?

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When Namenode is down what happens to job tracker?

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What is sqoop in Hadoop ?

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