Command to format the NameNode?
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Where do you specify the Mapper Implementation?
Is hadoop open source?
What is your favourite tool in the hadoop ecosystem?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
What is structured data?
What is version-id mismatch error in hadoop?
How does an hadoop application look like or their basic components?
What are the limitations of importing RDBMS tables into Hcatalog directly?
What is the jobtracker and what it performs in a hadoop cluster?
What are the steps to submit a Hadoop job?
What does ‘jps’ command do?
Define streaming?
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