Explain the basic difference between traditional rdbms and hadoop?
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Is hadoop open source?
What is the purpose of RawComparator interface?
What are the different types of Znodes?
What do you know about keyvaluetextinputformat?
Is map like a pointer?
Why are the number of splits equal to the number of maps?
What are the benefits of block transfer?
What is commodity hardware?
what is meaning Replication factor?
What is output format in hadoop?
What does the command mapred.job.tracker do?
What is Hadoop serialization?