What is speculative execution in Hadoop?
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What do the master class and the output class do?
Explain how is hadoop different from other data processing tools?
How client application interacts with the NameNode?
What is the jobtracker?
Explain the Job OutputFormat?
What are the functionalities of jobtracker?
What is the sequencefileinputformat in hadoop?
What is cloudera and why it is used?
What is the purpose of dfsadmin tool?
How to write a Custom Key Class?
What is Rack awareness?
What are the additional benefits YARN brings in to Hadoop?
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