What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
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What are the modules that constitute the Apache Hadoop 2.0 framework?
How to enable recycle bin in hadoop?
Why is hadoop faster?
What is a Record Reader in hadoop?
Explain why the name ‘hadoop’?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
What do the master class and the output class do?
how can we change Replication Factor?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
what is SPF?
Explain use cases where SequenceFile class can be a good fit?
Explain how is hadoop different from other data processing tools?
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