What is the use of recordreader in hadoop?
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Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
How does speculative execution work in Hadoop?
What happen if one of the datanodes has much slower cpu?
What a task tracker is in hadoop?
What are the important modes of hadoop?
What are the four basic parameters of a mapper?
What is a Backup node in Hadoop?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
What is Chain Mapper?
Can we change the file cached by distributed cache
What is the use of cloudera?
What mode(s) can hadoop code be run in?
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