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In mapreduce what is a scarce system resource? Explain?
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What happen if the number of the reducer is 0 in MapReduce?
What is mapper in map reduce?
when do reducers play their role in a mapreduce task?
What combiners are and when you should utilize a combiner in a map reduce job?
Why is output file name in Hadoop MapReduce part-r-00000?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
Explain how do ‘map’ and ‘reduce’ work?
Explain Working of MapReduce?
How to create custom key and custom value in MapReduce Job?
what job does the conf class do?
What do you know about nlineinputformat?
When should you use sequencefileinputformat?
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