What is the job tracker role in hadoop?
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What are the network requirements for hadoop?
What is TextInputFormat in Hadoop?
Can hadoop handle streaming data?
What do you understand by a closure in scala?
Ideally what should be the block size in hadoop?
What is the role of the secondary namenode?
In which directory hadoop is installed?
What mode(s) can hadoop code be run in?
What are the four basic parameters of a mapper?
How can one write custom record reader?
What is Erasure Coding in Hadoop?
Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?
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