What is a Combiner?
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Explain what is sqoop in Hadoop ?
What is a 'block' in HDFS?
What is Hadoop streaming?
How did you debug your Hadoop code ?
What is structured data?
when hadoop enter in safe mode?
What is a Record Reader in hadoop?
How hdfa differs with nfs?
What is a block and block scanner in HDFS?
What are the functions of NameNode?
How is hadoop different from other data processing tools?
What are sink processors?
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