What is Derby database?
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Which are the three main hdfs-site.xml properties?
What hadoop does in safe mode?
Define tasktracker.
Explain why the name ‘hadoop’?
What is the purpose of DataNode block scanner?
What are the two main components of ResourceManager?
What are the network requirements for using hadoop?
Explain the use of .mecia class?
Who is a 'user' in HDFS?
In which location Name Node stores its Metadata and why?
Which files are used by the startup and shutdown commands?
How to keep HDFS cluster balanced?
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