What is rack awareness in hadoop?
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What is the difference between TextinputFormat and KeyValueTextInputFormat class?
Which object can be used to get the progress of a particular job
What is 'jps'?
Mention what is data cleansing?
Can I set the number of reducers to zero?
Explain the usage of Context Object?
What happen if one of the datanodes has much slower cpu?
Can you explain sequence file in hadoop?
What is winutils hadoop?
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?
Define a record reader?
How does job tracker schedule a job for the task tracker?
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