What is Rack Awareness in Apache Hadoop?
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Does Hadoop requires RAID?
What is compute and Storage nodes?
What hadoop does in safe mode?
What is a spill factor with respect to the ram?
What is version-id mismatch error in hadoop?
What is a namenode? How many instances of namenode run on a hadoop cluster?
Does hadoop always require digital data to process?
Does this lead to security issues?
Explain what if rack 2 and datanode fails?
What are combiners and its purpose?
Is map like a pointer?
How we can change Replication factor when Data is on the fly?
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