What do you know about the speculative execution?
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What is namenode?
Name the files which are used by the startup and shutdown commands?
How many datanodes can run on a single Hadoop cluster?
Why would nosql be better than using a sql database? And how much better is it?
Explain what is hadoop?
Can you explain hadoop streaming?
What happen on the namenode when a client tries to read a data file?
What are the hadoop configuration files at present?
What is distributed copy (distcp)?
Why do we need Hadoop?
What are the features of Standalone (local) mode?
Can you give some examples of Big Data?
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