Can you explain bloommapfile.
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Why would nosql be better than using a sql database? And how much better is it?
What do you think about the speculative execution?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
Explain how can you debug hadoop code?
What is Distributed Cache in Hadoop?
What happen if number of reducer is set to 0 in Hadoop?
What happen on the namenode when a client tries to read a data file?
Explain what is a sequence file in hadoop?
Can you define inputsplit in hadoop?
What are the core components of Hadoop?
Can you explain the common input formats in hadoop?
Define “speculative execution” in hadoop?
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