What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
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Which one is default?
What is the difference between namenode and datanode in hadoop?
How can we create a hadoop cluster from scratch?
What happen if number of reducer is set to 0 in Hadoop?
Why we use intwritable instead of int? Why we use longwritable instead of long?
What are the different modes in which we can configure/install Hadoop?
What sorts of actions does the job tracker process perform?
What does rack awareness algorithm means?
How many InputSplits will be made by hadoop framework?
Is there another way to check whether Namenode is working?
What are the network requirements for hadoop?
What does hadoop-env.sh do?
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