Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
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did you maintain the hadoop cluster in-house or used hadoop in the cloud?
Explain why do we need hadoop?
Define a job tracker?
Define a daemon?
What are the characteristics of hadoop framework?
What's the best way to copy files between HDFS clusters?
Define streaming?
On what basis data will be stored on a rack?
Define a task tracker?
In which location Name Node stores its Metadata and why?
how to share the metastore within multiple users?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
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