What is the use of InputFormat in MapReduce process?
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For a job in Hadoop, is it possible to change the number of mappers to be created?
What is the difference between an RDBMS and Hadoop?
How to write a custom partitioner for a Hadoop MapReduce job?
How to set the number of reducers?
What is the inputsplit in map reduce software?
What combiners is and when you should use a combiner in a MapReduce Job?
Detail description of the Reducer phases?
What is the core of the job in MapReduce framework?
Define Writable data types in MapReduce?
Explain what are the basic parameters of a mapper?
Explain the Reducer's Sort phase?
What is Reducer in MapReduce?
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