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What is TextInputFormat in Hadoop?
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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?
Do we need to place 2nd and 3rd data in rack 2 only?
Can hadoop handle streaming data?
Define a sequence file in hadoop?
What is the use of context object?
What is the job tracker role in hadoop?
Can I set the number of reducers to zero?
Whats the default port that jobtrackers listens ?
How to add/delete a Node to the existing cluster?
What jobtracker is in hadoop? What are the activities followed by hadoop?
What is the difference between namenode and datanode in hadoop?
How can one write custom record reader?
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