What is the purpose of dfsadmin tool?
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What does /etc /init.d do?
On which port does ssh work?
Explain the use of .mecia class?
Explain the hadoop-core configuration?
How the Client communicates with HDFS?
What does /var/hadoop/pids do?
what is meaning Replication factor?
How to write a Custom Key Class?
What are the port numbers of namenode, job tracker and task tracker?
What are the benefits of block transfer?
Input Split & Record Reader and what they do?
What do you know about keyvaluetextinputformat?