What is the difference between TextinputFormat and KeyValueTextInputFormat class?
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What happens in text format?
What is active and passive NameNode in Hadoop?
When should be hadoop archive create?
What is CAP Theorem? What aspects does Hadoop support from this theorem?
What does rack awareness algorithm means and why is it utilized as a part of hadoop?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
Clarify how job tracker schedules an assignment?
Compare Hadoop 2 and Hadoop 3?
Define “speculative execution” in hadoop?
Why do we need Hadoop?
Can you explain the common input formats in hadoop?
What is Mapper? How can we compress Mapper output in Hadoop?
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