How to add/delete a Node to the existing cluster?
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What is the default replication factor and how will you change it?
What are the major differences between Hadoop 2 and Hadoop 3?
What is the basic difference between traditional RDBMS and Hadoop?
What are 'slaves' and 'masters' in Hadoop?
Why can we not create directory /user/dataflair/inpdata001 when name node is in safe mode?
How will you write a custom partitioner for a Hadoop job?
Why do we need Hadoop?
Is hadoop still in demand?
What happens in text format?
What does rack awareness mean?
Explain the core methods of the reducer?
What does the file hadoop-metrics.properties do?
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