Can you explain how do ‘map’ and ‘reduce’ work?
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What is Input Split in hadoop?
Explain the hadoop-core configuration?
what is SPF?
Why password is needed in ssh localhost?
What is zookeeper in hadoop?
Input Split & Record Reader and what they do?
How to resolve small file problem in hdfs?
What is NoSQL?
Explain the difference between NameNode
What is speculative execution in Hadoop?
How does master slave architecture in the hadoop?
What if rack 2 and datanode fails?
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