How many maps are there in a particular job?
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What daemons run on master nodes?
What are the Hadoop features extended to its eco-system components ?
What is the purpose of RecordReader in hadoop?
What are the core components of Hadoop?
Explain how Hadoop cluster hardware planning and provisioning is done?
What are the main components in Hadoop Eco-System and what are their functions ?
What is a Heartbeat in Hadoop?
Can you define a checkpoint?
Which modes can Hadoop be run in? List a few features for each mode?
What does jps command do in Hadoop?
what happens when namenode goes down during file read operation in hadoop?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
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