Explain how can you debug hadoop code?
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How can native libraries be included in yarn jobs?
How to use combiner in hadoop ?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
What is the difference between an inputsplit and a block?
Explain how can we check whether namenode is working or not?
What is streaming in Hadoop?
What is data cleansing?
What is tasktracker in hadoop?
What sorts of actions does the job tracker process perform?
What is the relationship between Jobs and Tasks in Hadoop?
Why do the nodes are removed and added frequently in a hadoop cluster?
What is Rack Awareness? What is its need in Hadoop?
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