Ideally what should be replication factor in a Hadoop cluster?
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How can one check whether NameNode is working or not?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
Name the most common input formats defined in hadoop?
Can we write map reduce program in other than java programming language. How?
What kind of hardware is best for hadoop?
What is the most widely recognized info formats characterized in hadoop?
List out some common problems faced by data analyst?
What are the major differences between Hadoop 2 and Hadoop 3?
Can you give some examples of Big Data?
Clarify what a task tracker is in hadoop?
What is check pointing in hadoop?
What is heartbeat in hadoop?
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