Can you define udf?
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Explain how do you overwrite replication factor?
What do you understand by standalone (or local) mode?
What is the use of cloudera?
Explain how Hadoop cluster hardware planning and provisioning is done?
What happen if number of reducer is set to 0 in Hadoop?
Can you explain sequence file in hadoop?
Which operating system(s) are supported for production hadoop deployment?
Ideally what should be replication factor in a Hadoop cluster?
What is Reducer in Hadoop?
Compare Hadoop 2 and Hadoop 3?
What is job tracker role in hadoop?
Can you explain the common input formats in hadoop?
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