Explain what are the basic parameters of a mapper?
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What is the difference between Job and Task in MapReduce?
What platform and Java version is required to run Hadoop?
What does a split do?
How do ‘map’ and ‘reduce’ work?
Explain combiners.
Explain Working of MapReduce?
Define Writable data types in Hadoop MapReduce?
Explain what you understand by speculative execution
What is the relationship between Job and Task in Hadoop?
What is Output Format in MapReduce?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Different ways of debugging a job in MapReduce?
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