Why would nosql be better than using a sql database? And how much better is it?
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What is the difference between an inputsplit and a block?
What is Identity reducer?
Explain the Single point of Failure in Hadoop?
What are the parameters of mappers and reducers?
What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
What is difference between reducer and combiner?
Can you explain record reader?
What are the core components of Hadoop?
What is LazyOutputFormat in Hadoop?
What are the modes in which Hadoop run?
Explain what is speculative execution?
Is hadoop still in demand?
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