What are the four basic parameters of a reducer?
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How does Mappers run method works?
In MapReduce how to change the name of the output file from part-r-00000?
In mapreduce what is a scarce system resource? Explain?
Explain how do ‘map’ and ‘reduce’ work?
How to optimize MapReduce Job?
Where is Mapper output stored?
What do sorting and shuffling do?
Why Hadoop MapReduce?
What is a MapReduce Combiner?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
What are the key differences between Pig vs MapReduce?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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