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What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
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What is Text Input Format?
What is Combiner in MapReduce?
What main configuration parameters are specified in mapreduce?
What is identity mapper and reducer? In which cases can we use them?
Define the purpose of the partition function in mapreduce framework
Explain what combiners are and when you should use a combiner in a mapreduce job?
Why comparison of types is important for MapReduce?
Why Mapreduce output written in local disk?
What is the role of recordreader in hadoop mapreduce?
What do you mean by inputformat?
What combiners are and when you should utilize a combiner in a map reduce job?
What happens if the quantity of the reducer is 0 in mapreduce?
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