How Hadoop is cost-effective?
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Explain Data Locality in Hadoop?
How to add/delete a Node to the existing cluster?
Is hadoop still in demand?
What do you understand by a closure in scala?
What is TaskTracker?
Which modes can Hadoop be run in? List a few features for each mode?
What is the problem with small files in Hadoop?
What is Chain Mapper?
Can you explain bloommapfile.
Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
Why cloudera is used?
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