Can we call vms as pseudos?
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What is the difference between hadoop and other data processing tools?
How to change replication factor of files already stored in HDFS?
What are the functions of NameNode?
What does /var/hadoop/pids do?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is a task instance in hadoop? Where does it run?
What is a “Distributed Cache” in Apache Hadoop?
Define fault tolerance?
Explain the basic difference between traditional rdbms and hadoop?
What stored in HDFS?
How to exit the vi editor?
Command to format the NameNode?
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