Explain the usage of Context Object?
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Explain how Hadoop cluster hardware planning and provisioning is done?
What does hadoop-env.sh do?
Define “speculative execution” in hadoop?
Mention how many inputsplits is made by a hadoop framework?
What does rack awareness mean?
What is the difference between a hadoop database and relational database?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
Have you ever used counters in hadoop?
How can one check whether NameNode is working or not?
When should be hadoop archive create?
Can you give a detailed overview about the Big Data being generated by Facebook?
Explain about Hadoop file system and processing framework?
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