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Explain the difference between a MapReduce InputSplit and HDFS block?
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What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
How many Mappers run for a MapReduce job?
When should you use a reducer?
What is Hadoop Map Reduce ?
Write a short note on the disadvantages of mapreduce
How to compress mapper output in Hadoop?
what is the Hadoop MapReduce APIs contract for a key and value class?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
Why is output file name in Hadoop MapReduce part-r-00000?
What are the various input and output types supported by mapreduce?
What combiners is and when you should use a combiner in a MapReduce Job?
What is a mapreduce algorithm?
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