How can we check whether namenode is working or not?
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What do shuffling do?
What are active and passive "NameNodes"?
How to configure hadoop to reuse JVM for mappers?
Can we have multiple entries in the master files?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
Explain the basic difference between traditional rdbms and hadoop?
What are sink processors?
Is it possible to provide multiple inputs to hadoop? If yes, explain.
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
What are the main components of a Hadoop Application?
What are the benefits of block transfer?
Can hive run without hadoop?
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