What is data cleansing?
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Can you define a checkpoint?
What a task tracker is in hadoop?
What do you understand by unit and ()in scala?
What does the mapred.job.tracker command do?
What are the restriction to the key and value class ?
How to create hadoop archive?
How to add/delete a Node to the existing cluster?
What happens if the number of reducers is 0 in Hadoop?
Explain how can you debug hadoop code?
Can you explain sequence file in hadoop?
What is the block size in Hadoop?
What is LazyOutputFormat in Hadoop?
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