What are sink processors?
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What is Derby database?
How can you connect an application
Who is a 'user' in HDFS?
How can we check whether namenode is working or not?
On what basis name node distribute blocks across the data nodes?
What are the stable versions of Hadoop?
What do sorting do?
what are the steps involved in decommissioning removing
What does ‘jps’ command do?
How client application interacts with the NameNode?
What are active and passive "NameNodes"?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
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