What is JobTracker?
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How can you native libraries be included in yarn jobs?
Why we use intwritable instead of int? Why we use longwritable instead of long?
What kind of hardware is best for hadoop?
Which modes can Hadoop be run in? List a few features for each mode?
Can you define a checkpoint?
Is it possible to rename the output file, and if so, how?
Is Namenode machine same as DataNode machine as in terms of hardware?
What is structured and unstructured data?
What are the Features of Hadoop?
Can you explain record reader?
How many datanodes can run on a single Hadoop cluster?
What are the important modes of hadoop?
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