Clarify what combiners are and when you should utilize a combiner in a map reduce job?
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How to write MapReduce Programs?
In Hadoop what is InputSplit?
What are the main components of MapReduce Job?
Explain how mapreduce works.
What MapReduce framework consists of?
What is a scarce system resource?
What does a split do?
How to set mappers and reducers for Hadoop jobs?
What is a "map" in Hadoop?
Why MapReduce uses the key-value pair to process the data?
What is the process of changing the split size if there is limited storage space on Commodity Hardware?
How to change a number of mappers running on a slave in MapReduce?
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