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Is it mandatory to set input and output type/format in MapReduce?
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Why is output file name in Hadoop MapReduce part-r-00000?
Explain how mapreduce works.
How do reducers communicate with each other?
For a job in Hadoop, is it possible to change the number of mappers to be created?
What are ‘reduces’?
what is storage and compute nodes?
Explain the difference between a MapReduce InputSplit and HDFS block?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is the difference between an RDBMS and Hadoop?
Is there any point of learning mapreduce, then?
What is Distributed Cache in the MapReduce Framework?
What are the four basic parameters of a reducer?
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