On what basis data will be stored on a rack?
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What is 'Key value pair' in HDFS?
Define a namenode?
Input Split & Record Reader and what they do?
What is a heartbeat in HDFS?
What is Writable & WritableComparable interface?
Explain why do we need hadoop?
What do you mean by taskinstance?
What is the process to change the files at arbitrary locations in HDFS?
What is a secondary namenode?
Define a metadata?
Is hadoop a memory?
What do you know about keyvaluetextinputformat?
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