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Mention what are the three modes in which hadoop can be run?
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Which scala library is used for functional programming?
What are the important features of hadoop?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
What is hadoop? Name the main components of a hadoop application?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
How is the splitting of file invoked in Hadoop ?
What is the use of recordreader in hadoop?
what if job tracker machine is down?
Define a sequence file in hadoop?
Can you define udf?
What is a Heartbeat in Hadoop?
Can you explain indexing?
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