What are the four basic parameters of a mapper?
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Clarify what is sqoop in hadoop?
Why would nosql be better than using a sql database? And how much better is it?
How to create the directory when name node is in safe mode?
What is tasktracker in hadoop?
Tell me some major benefits of Hadoop?
Explain the difference between an inputsplit and a block?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?
What does the high availability of a name-node means? How is it accomplished?
What are some of the characteristics of Hadoop framework?
Clarify what is sequence file input format?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
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