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What is a commodity hardware? Does commodity hardware include RAM?
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What is partitioning?
What does the high availability of a name-node means? How is it accomplished?
What is rack awareness in hadoop?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
Explain how can we check whether namenode is working or not?
How to do ‘map’ and ‘reduce’ works?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
Can you explain the common input formats in hadoop?
What is the difference between a hadoop database and relational database?
What is winutils hadoop?
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