Mention what is rack awareness?
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How jobtracker assign tasks to the tasktracker?
What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
Mention what is rack awareness?
What do you understand by unit and ()in scala?
What is a udf?
What are the benefits yarn brings in to hadoop?
What happen when namenode enters in safemode in hadoop?
Can you give some examples of Big Data?
What is partitioning?
In which directory hadoop is installed?
Compare Hadoop 2 and Hadoop 3?
Explain how can you debug hadoop code?
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