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What is MapReduce?
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Answer / bindu
It is data processing layer of hadoop.map and reduce are the two tasks for processing data in hadoop.
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Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Where is the output of Mapper written in Hadoop?
Mention what is the hadoop mapreduce apis contract for a key and value class?
What is RecordReader in a Map Reduce?
what are the basic parameters of a Mapper?
Name job control options specified by mapreduce.
In Hadoop what is InputSplit?
What is the difference between an RDBMS and Hadoop?
What are the fundamental configurations parameters specified in map reduce?
What are the identity mapper and reducer in MapReduce?
what is NameNode in Hadoop?
How to sort intermediate output based on values in MapReduce?
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