What are configuration files in Hadoop?
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How to do ‘map’ and ‘reduce’ works?
Is it possible to have hadoop job output in multiple directories? If yes, how?
How namenode handles data node failures?
What did mean by data-node?
What is tasktracker in hadoop?
What are the hadoop configuration files at present?
What is winutils hadoop?
What is the job tracker role in hadoop?
What is a udf?
Why can we not create directory /user/dataflair/inpdata001 when name node is in safe mode?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
What do you know about yarn?
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