How to use combiner in hadoop ?
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Explain how do you overwrite replication factor?
Why can we not create directory /user/dataflair/inpdata001 when name node is in safe mode?
What are the functionalities of jobtracer?
What is Reducer in Hadoop?
Which operating system(s) are supported for production hadoop deployment?
What jobtracker is in hadoop? What are the activities followed by hadoop?
Is hadoop still in demand?
What are the core components of Hadoop?
What is the difference between an inputsplit and a block?
What kind of hardware is best for hadoop?
Clarify how ordering in hdfs is finished?
What are the four basic parameters of a mapper?
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