Is fs.mapr.working.dir a single directory?
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Can you explain how do ‘map’ and ‘reduce’ work?
Mention what is the use of Context Object?
What are combiners and its purpose?
How to write a Custom Key Class?
when hadoop enter in safe mode?
What is unstructured data?
Explain a simple Map/Reduce problem.
How to enable trash/recycle bin in hadoop?
Mention what are the data components used by Hadoop?
Define streaming access?
What is compute and Storage nodes?
Explain the basic architecture of Hadoop?
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