How NameNode tackle Datanode failures in Hadoop?
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Give me the examples of Columnar database ?
Which modes can Hadoop be run in? List a few features for each mode?
What are the functionalities of jobtracer?
Can you explain rack awareness?
In which location name node sores its metadata and why?
Which directory does hadoop install to?
Explain what is namenode in hadoop?
What is the basic difference between traditional RDBMS and Hadoop?
What is throughput in Hadoop?
Do we need to place 2nd and 3rd data in rack 2 only?
Can hadoop handle streaming data?
Define “speculative execution” in hadoop?
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