What is HDFS High Availability?
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What are the hadoop's three configuration files?
How the Client communicates with HDFS?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
Which one is default InputFormat in Hadoop ?
Is it necessary to know java to learn hadoop?
On what basis data will be stored on a rack?
How can I restart namenode?
Explain what is sqoop in Hadoop ?
What is inputsplit in hadoop? Explain.
What happens to a NameNode that has no data?
What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
What happens to a namenode, when job tracker is down?
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