How did you debug your Hadoop code ?
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What are the limitations of importing RDBMS tables into Hcatalog directly?
Explain how do ‘map’ and ‘reduce’ works?
What is the difference between SQL and NoSQL?
Is hadoop the future?
Why is Apache Spark faster than Apache Hadoop?
Define tasktracker.
What is oozie in hadoop?
What is InputSplit and RecordReader?
explain Metadata in Namenode?
What is a checkpoint?
How is the distance between two nodes defined in Hadoop?
Can you explain how do ‘map’ and ‘reduce’ work?