What do you mean by shuffling and sorting in MapReduce?
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What is a TaskInstance?
What are the primary phases of a Reducer?
What are the configuration parameters in the 'MapReduce' program?
What is a scarce system resource?
What is a IdentityMapper and IdentityReducer in MapReduce ?
What is the difference between an RDBMS and Hadoop?
What are the main configuration parameters in a MapReduce program?
Explain the Reducer's Sort phase?
What is identity mapper and chain mapper?
What does a 'MapReduce Partitioner' do?
What is a Speculative Execution in Hadoop MapReduce?
Explain how do ‘map’ and ‘reduce’ work?
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