What is data cleansing?
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Do we need to place 2nd and 3rd data in rack 2 only?
What is active and passive NameNode in Hadoop?
What is Federation?
Does hadoop follows the unix pattern?
What is TextInputFormat in Hadoop?
How many InputSplits will be made by hadoop framework?
Do we require two servers for the namenode and the datanodes?
Mention what daemons run on a master node and slave nodes?
Can you give a detailed overview about the Big Data being generated by Facebook?
What are the important modes of hadoop?
What is a Backup node in Hadoop?
What is NameNode? How NameNode tackle Datanode failures in Hadoop?
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