What does name-node mean in hadoop?
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What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
List some use cases where classification machine learning algorithms can be used.
What do you understand by standalone (or local) mode?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
What are the differences between hadoop 1 and hadoop 2?
Explain what is storage and compute nodes?
What is the purpose of context object?
What are the Hadoop features extended to its eco-system components ?
Why is Data Block size set to 128 MB in Hadoop?
Name the operating system(s) which are supported for production hadoop deployment?
Compare Hadoop 2 and Hadoop 3?
Why aggregation cannot be done in Mapper?
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