Can NameNode and DataNode be a commodity hardware?
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What is salary of hadoop developer?
What is the full form of fsck?
what are the nodes in the Hadoop cluster?
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
Give the use of the bootstrap panel.
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
What is the purpose of dfsadmin tool?
What is a Record Reader in hadoop?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is Schema on Read and Schema on Write?
What is rack-aware replica placement policy?
Does google use hadoop?
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