Clarify what is sequence file input format?
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What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
Why do we need Hadoop?
Compare Hadoop 2 and Hadoop 3?
What is Erasure Coding in Hadoop?
What are the common types of NOSQL data bases ?
Name the files which are used by the startup and shutdown commands?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
What are the main components of hadoop?
What are the actions followed by hadoop?
What do you understand by standalone (or local) mode?
Ideally what should be the block size in hadoop?
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