Is Namenode machine same as DataNode machine as in terms of hardware?
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What are the most common InputFormats in Hadoop?
What is the non dfs used?
How can you set an arbitrary number of Reducers to be created for a job in Hadoop?
Can we write map reduce program in other than java programming language. How?
What are the core methods of a Reducer?
What does block mean?
How can we create a hadoop cluster from scratch?
Which one is default?
What do you think about the speculative execution?
Name the most common input formats defined in hadoop?
What is the most widely recognized info formats characterized in hadoop?
How can one write custom record reader?
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