What are the limitations of Hadoop?
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Mention what are the three modes in which hadoop can be run?
Can you explain edge nodes in hadoop?
How often do you need to reformat the namenode?
Why do the nodes are removed and added frequently in a hadoop cluster?
What are the most common InputFormats in Hadoop?
What are the limitations of Hadoop?
What do you think about the speculative execution?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
Explain the usage of Context Object?
What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
Can you explain speculative execution?
What are the four basic parameters of a mapper?
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