what are the most common input formats defined in Hadoop?
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Where is Mapper output stored?
What are the main configuration parameters in a MapReduce program?
Where the mapper's intermediate data will be stored?
What is the input type/format in MapReduce by default?
What is Reduce only jobs?
Explain how do ‘map’ and ‘reduce’ work?
What are the four essential parameters of a mapper?
How to get the single file as the output from MapReduce Job?
What is identity mapper and chain mapper?
How can we assure that the values regarding a particular key goes to the same reducer?
Explain the Reducer's reduce phase?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
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