What are the various input and output types supported by mapreduce?
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When should you use sequencefileinputformat?
Define speculative execution?
What are the four essential parameters of a mapper?
What is SequenceFileInputFormat?
What is the Hadoop MapReduce API contract for a key and value Class?
What is the role of a MapReduce partitioner?
Explain what does the conf.setmapper class do?
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Differentiate Reducer and Combiner in Hadoop MapReduce?
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Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?
When is it not recommended to use MapReduce paradigm for large scale data processing?
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