How to do ‘map’ and ‘reduce’ works?
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What are the side data distribution techniques?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
What are the important modes of hadoop?
Explain the key benefits of using storm for real time processing?
If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
What do you understand by standalone (or local) mode?
What mode(s) can hadoop code be run in?
What is the default replication factor and how will you change it?
Explain what is a task tracker in hadoop?
When we send a data to a node, do we allow settling in time, before sending another data to that node?
How does speculative execution work in Hadoop?
Name the most common input formats defined in hadoop?
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