What is the command to change the replication factor ?
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Is it possible to provide multiple input to Hadoop? If yes then how?
Can you define udf?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
How would an hadoop administrator deploy various components of hadoop in production?
What is streaming in Hadoop?
Explain in which directory hadoop is installed?
What is distributed copy (distcp)?
What happen when namenode enters in safemode in hadoop?
Explain what is jobtracker in hadoop? What are the actions followed by hadoop?
In which location name node sores its metadata and why?
What does hadoop-metrics.properties file do?
How many maps are there in a particular job?
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