How Mapper is instantiated in a running job?
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Why is hadoop faster?
What is the Use of SSH in Hadoop ?
What is Rack Awareness in Apache Hadoop?
What happens to a namenode, when job tracker is down?
What is a Task instance in Hadoop? Where does it run?1
Explain the shuffle?
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
How is security achieved in Apache Hadoop?
Does hadoop always require digital data to process?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What are the important differences between apache and hadoop?
What do you know about nlineoutputformat?
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