Explain what is namenode in hadoop?
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Who are ‘Data Scientists’?
What does rack awareness algorithm means and why is it utilized as a part of hadoop?
Mention what are the most common input formats defined in hadoop?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
Can you explain textinformat?
List of the some best tools that can be useful for data-analysis?
Mention what is the data storage component used by hadoop?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
What is the best practice to deploy the secondary name node?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
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