What do you understand by mapreduce?
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What do you understand by mapreduce?
what does the conf.setMapper Class do ?
What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
Explain how do ‘map’ and ‘reduce’ work?
What is the core of the job in MapReduce framework?
Name job control options specified by mapreduce.
What is a IdentityMapper and IdentityReducer in MapReduce ?
How data is spilt in Hadoop?
How to configure the number of the Combiner in MapReduce?
How do reducers communicate with each other?
What are the primary phases of a Reducer?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
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