Command to format the NameNode?
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Explain why do we need hadoop?
How to enable recycle bin or trash in hadoop?
What is a secondary namenode?
What is a Record Reader in hadoop?
How will format the HDFS ?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What is the difference between hadoop and other data processing tools?
Define fault tolerance?
How many instances of JobTracker can run on a Hadoop Cluser?
What are the most commonly defined input formats in Hadoop?
Where is the Mapper Output intermediate kay-value data stored ?
shouldn't DFS be able to handle large volumes of data already?
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