How many JVMs run on a slave node?
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Main Components of Hadoop?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What are the additional benefits YARN brings in to Hadoop?
What is a namenode? How many instances of namenode run on a hadoop cluster?
Explain the use of tasktracker in the hadoop cluster?
What is hadoop framework?
What are the different methods to run Spark over Apache Hadoop?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
What is yarn in hadoop?
Explain how input and output data format of the hadoop framework?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
Define tasktracker.
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