How many JVMs run on a slave node?
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What if a namenode has no data?
What is HDFS High Availability?
Does this lead to security issues?
How many JVMs run on a slave node?
Why do we need a password-less ssh in fully distributed environment?
What should be the ideal replication factor in Hadoop Cluster?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What is oozie in hadoop?
What is Your Cluster size ?
What is inputformat in hadoop?
Explain a simple Map/Reduce problem.
Command to format the NameNode?