What is structured and unstructured data?
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How analysis of Big Data is useful for organizations?
What is a combiner in hadoop?
Mention what daemons run on a master node and slave nodes?
Explain the core methods of the reducer?
Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?
Mention what does the text input format do?
Can you explain commodity hardware?
What happen if one of the datanodes has much slower cpu?
What is Mapper? How can we compress Mapper output in Hadoop?
Why is Data Block size set to 128 MB in Hadoop?
What are the differences between hadoop 1 and hadoop 2?
Can you explain indexing?
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