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How to create hadoop archive?
When should be hadoop archive create?
What mode(s) can hadoop code be run in?
How often do you need to reformat the namenode?
What is the role of the namenode?
What happen on the namenode when a client tries to read a data file?
What is replication factor?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
What is distributed copy (distcp)?
What is the role of the secondary namenode?
Are there any special requirements for namenode?
is there a standard procedure to deploy hadoop?
What happen if a datanode loses network connection for a few minutes?
What is the procedure for namenode recovery?
How would an hadoop administrator deploy various components of hadoop in production?
