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Why MapReduce uses the key-value pair to process the data?
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What is a "reducer" in Hadoop?
Explain what is the function of mapreduce partitioner?
Explain how do ‘map’ and ‘reduce’ work?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
what is distributed cache in mapreduce framework?
What is difference between an input split and hdfs block?
What do you understand by mapreduce?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
Describe what happens to a mapreduce job from submission to output?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
Compare Pig vs Hive vs Hadoop MapReduce?
What are the main components of MapReduce Job?
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