Clarify what is sqoop in hadoop?
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Who are ‘Data Scientists’?
Define a record reader?
Give examples of some companies that are using Hadoop structure?
Explain what happens in text format?
Can you explain rack awareness?
What are the core methods of a Reducer?
What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
How can you native libraries be included in yarn jobs?
What is the difference between a hadoop database and relational database?
Clarify what is sequence file input format?
Name the most common Input Formats defined in Hadoop? Which one is default?
Explain how jobtracker schedules a task?
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