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What is throughput in Hadoop?
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What does the mapred.job.tracker command do?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
Mention what are the three modes in which hadoop can be run?
Is it possible to have hadoop job output in multiple directories?
What is 'jps'?
What are 'slaves' and 'masters' in Hadoop?
Mention what are the most common input formats defined in hadoop?
Why do we need Hadoop Archives? How is it created?
Define “speculative execution” in hadoop?
How does speculative execution work in Hadoop?
Are job tracker and task trackers present in separate machines?
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