Which data storage components are used by hadoop?
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What is inputsplit in hadoop? Explain.
what is difference between int and intwritable?
Explain how do ‘map’ and ‘reduce’ works?
Name some companies that use Hadoop?
What is the difference between hadoop and other data processing tools?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What are watches?
What should be the ideal replication factor in Hadoop Cluster?
What are the two main components of ResourceManager?
If a data Node is full how it's identified?
How client application interacts with the NameNode?
What are the characteristics of hadoop framework?
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