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In MapReduce Data Flow, when Combiner is called?
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Is it necessary to write a mapreduce job in java?
What is the function of mapreduce partitioner?
Is it possible to split 100 lines of input as a single split in MapReduce?
What is MapReduce? What are the syntax you use to run a MapReduce program?
What is the difference between RDBMS with Hadoop MapReduce?
Explain what combiners are and when you should use a combiner in a mapreduce job?
Mention what is the hadoop mapreduce apis contract for a key and value class?
How do ‘map’ and ‘reduce’ work?
What are the four essential parameters of a mapper?
Whether the output of mapper or output of partitioner written on local disk?
what does the text input format do?
List the network requirements for using Hadoop ?
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