What are input format, input split & record reader and what they do?
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What are 'slaves' and 'masters' in Hadoop?
What does secondary name-node means?
What are the side effects of not running a secondary name node?
Explain how jobtracker schedules a task?
What are the important modes of hadoop?
What are the most common InputFormats in Hadoop?
If DataNode increases, then do we need to upgrade NameNode?
Mention how many inputsplits is made by a hadoop framework?
What is winutils hadoop?
is there a standard procedure to deploy hadoop?
Why is Data Block size set to 128 MB in Hadoop?
Explain what is speculative execution?
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