How often do you need to reformat the namenode?
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How would an hadoop administrator deploy various components of hadoop in production?
what happens when namenode goes down during file read operation in hadoop?
What is the command to change the replication factor ?
Is it possible to have hadoop job output in multiple directories? If yes, how?
Compare Hadoop and RDBMS?
Can you explain edge nodes in hadoop?
How does hadoop achieve fault tolerance?
What webdav is in hadoop?
What are the hadoop configuration files at present?
Can hadoop replace relational database?
What are configuration files in Hadoop?
What is TextInputFormat in Hadoop?
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