Explain the difference between NameNode
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What are the network requirements for using hadoop?
Is client the end user in HDFS?
Explain how is hadoop different from other data processing tools?
What is Row Key?
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
What is Writable & WritableComparable interface?
Which are the two types of 'writes' in HDFS?
Can we call vms as pseudos?
Explain the master class and the output class do?
What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
What is the purpose of button groups?
What is the purpose of dfsadmin tool?