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Why MapReduce uses the key-value pair to process the data?
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Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What MapReduce framework consists of?
Explain the general mapreduce algorithm
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
Can you tell us how many daemon processes run on a hadoop system?
What is mapreduce algorithm?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
Explain slot in Hadoop Map-Reduce v1?
What does a 'MapReduce Partitioner' do?
What are the key differences between Pig vs MapReduce?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
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