Mention what daemons run on a master node and slave nodes?
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Why does one remove or add nodes in a Hadoop cluster frequently?
Give me an example of document database ?
What is a Backup node in Hadoop?
How is security achieved in Hadoop?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
What is the problem with small files in Hadoop?
Explain Data Locality in Hadoop?
Compare Hadoop 2 and Hadoop 3?
What are the parameters of mappers and reducers?
We have already sql then why nosql?
What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
What is distributed copy (distcp)?
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