What does block mean?
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What does secondary name-node means?
What is hadoop? Name the main components of a hadoop application?
What happens if number of reducers are 0?
What happen if number of reducer is set to 0 in Hadoop?
Is it possible to rename the output file, and if so, how?
In which directory hadoop is installed?
Do we require two servers for the namenode and the datanodes?
What is a commodity hardware? Does commodity hardware include RAM?
Why Hadoop performs replication, although it results in data redundancy?
What is winutils hadoop?
How would you restart NameNode?
Compare Hadoop 2 and Hadoop 3?
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