What does the mapred.job.tracker command do?
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What does rack awareness mean?
What is Rack Awareness? What is its need in Hadoop?
What is the job tracker role in hadoop?
Explain how jobtracker schedules a task?
Mention what daemons run on a master node and slave nodes?
Explain map-only job?
How many maps are there in a particular job?
Why Hadoop performs replication, although it results in data redundancy?
What is Mapper? How can we compress Mapper output in Hadoop?
What are the port numbers of task tracker?
Explain in which directory hadoop is installed?
What does secondary name-node means?
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