What is a "map" in Hadoop?
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Explain how mapreduce works.
What is a "reducer" in Hadoop?
What is Distributed Cache in the MapReduce Framework?
What are the four basic parameters of a reducer?
What is partitioning in MapReduce?
What do you mean by inputformat?
How to optimize Hadoop MapReduce Job?
Explain the Reducer's Sort phase?
Developing a MapReduce Application?
It can be possible that a Job has 0 reducers?
What is the role of a MapReduce partitioner?
Explain what is “map” and what is "reducer" in hadoop?
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