Explain what is a task tracker in hadoop?
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What is JPS? Why is it used in Hadoop?
Explain how jobtracker schedules a task?
What is tasktracker in hadoop?
How NameNode tackle Datanode failures in Hadoop?
What are the most common OutputFormat in Hadoop?
How many datanodes can run on a single Hadoop cluster?
What is a commodity hardware? Does commodity hardware include RAM?
Is it possible to have hadoop job output in multiple directories?
what is next step after mapper or maptask?
What is Rack Awareness? What is its need in Hadoop?
Explain what is sequencefileinputformat?
Which one is default?
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