Should we use RAID in Hadoop or not?
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Explain the use of tasktracker in the hadoop cluster?
Is it possible to provide multiple inputs to hadoop? If yes, explain.
What are sink processors?
Explain how do ‘map’ and ‘reduce’ works?
What is the jobtracker and what it performs in a hadoop cluster?
What is version-id mismatch error in hadoop?
What happens in a textinputformat?
What is hadoop framework?
What will you do when NameNode is down?
What happens to job tracker when namenode is down?
Explain how input and output data format of the hadoop framework?
What is your favourite tool in the hadoop ecosystem?
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