What will you do when NameNode is down?
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What is formatting of the dfs?
What are different types of filesystem?
What is oozie in hadoop?
What is the difference between hadoop and other data processing tools?
What does /etc /init.d do?
Explain the master class and the output class do?
Can you tell us more about ssh?
How would you tackle counting words in several text documents?
What is safe mode in Hadoop?
What is your favourite tool in the hadoop ecosystem?
What is the use of combiners in the hadoop framework?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
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