What is the role of the namenode?
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What do you think about the speculative execution?
Can we write map reduce program in other than java programming language. How?
What is 'jps'?
Give examples of some companies that are using Hadoop structure?
Explain is it possible to search for files using wildcards?
Which scala library is used for functional programming?
How many InputSplits will be made by hadoop framework?
What are the most common OutputFormat in Hadoop?
Can you explain edge nodes in hadoop?
What happens if the number of reducers is 0 in Hadoop?
What is the best practice to deploy the secondary name node?
Give me the examples of Columnar database ?
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