what is "map" and what is "reducer" in Hadoop?
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How to set the number of reducers?
Is it important for Hadoop MapReduce jobs to be written in Java?
How to write MapReduce Programs?
What is the next step after Mapper or MapTask?
What is Text Input Format?
What is MapReduce? What are the syntax you use to run a MapReduce program?
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
Explain how mapreduce works.
What does a 'MapReduce Partitioner' do?
What is Counter in MapReduce?
What is the default value of map and reduce max attempts?
What is the difference between RDBMS with Hadoop MapReduce?
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