What is identity mapper and identity reducer?
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mapper or reducer?
How do reducers communicate with each other?
Where sorting is done in Hadoop MapReduce Job?
What are the benefits of Spark over MapReduce?
What is the relationship between Job and Task in Hadoop?
Difference between mapreduce and spark
How do ‘map’ and ‘reduce’ work?
What is Counter in MapReduce?
What platform and Java version is required to run Hadoop?
What is the Job interface in MapReduce framework?
What is difference between an input split and hdfs block?
Illustrate a simple example of the working of MapReduce.
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