Explain how can you debug hadoop code?
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Explain what is hadoop?
What is a rack?
What is TextInputFormat in Hadoop?
How to create a user in Hadoop?
What is streaming in Hadoop?
While starting hadoop services, datanode service is not running?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
What are the core methods of a Reducer?
What is Identity reducer?
Can you explain edge nodes in hadoop?
What are the port numbers of task tracker?
Which directory does hadoop install to?
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