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What is Disk Balancer in Hadoop?
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Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
What does hadoop-env.sh do?
What are the different commands used to startup and shutdown Hadoop daemons?
What are the benefits yarn brings in to hadoop?
What does the high availability of a name-node means?
How can you set an arbitrary number of Reducers to be created for a job in Hadoop?
Explain how do you overwrite replication factor?
Which directory does hadoop install to?
Clarify how job tracker schedules an assignment?
Can hadoop replace relational database?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
What jobtracker is in hadoop? What are the activities followed by hadoop?
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