Explain what is jobtracker in hadoop? What are the actions followed by hadoop?
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Is it possible to have hadoop job output in multiple directories? If yes, how?
What is the default replication factor in Hadoop and how will you change it?
What is a record reader?
Why use hadoop?
Explain what is jobtracker in hadoop? What are the actions followed by hadoop?
What are the network requirements for hadoop?
What kind of hardware is best for hadoop?
Are there any special requirements for namenode?
Can hadoop handle streaming data?
Define a sequence file in hadoop?
What is a Backup node in Hadoop?
How can one write custom record reader?
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