How would you check whether your NameNode is working or not?
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Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
What is Fault Tolerance?
How can you native libraries be included in yarn jobs?
How analysis of Big Data is useful for organizations?
While starting hadoop services, datanode service is not running?
What happen on the namenode when a client tries to read a data file?
How can we create a hadoop cluster from scratch?
How to create hadoop archive?
What sorts of actions does the job tracker process perform?
Can you explain the common input formats in hadoop?
Mention what is rack awareness?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
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