Can you explain how do ‘map’ and ‘reduce’ work?
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What are the functionalities of jobtracker?
Can Hadoop be compared to NOSQL database like Cassandra?
How many instances of a jobtracker run on hadoop cluster?
Can you explain how do ‘map’ and ‘reduce’ work?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
What is NoSQL?
What is the meaning of the term "non-DFS used" in Hadoop web-console?
What is output format in hadoop?
shouldn't DFS be able to handle large volumes of data already?
Define a metadata?
Explain what is sqoop in Hadoop ?
What happens in a textinputformat?
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