Is it possible to provide multiple input to Hadoop? If yes then how?
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What are the features of Pseudo mode?
Why do we need Hadoop Archives? How is it created?
What do you mean by the NameNode High Availability in hadoop?
How can one check whether NameNode is working or not?
Which port does SSH work on?
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 how hadoop is different from other data processing tools?
What do you know about yarn?
Are job tracker and task trackers present in separate machines?
How Hadoop is cost-effective?
How would an hadoop administrator deploy various components of hadoop in production?
Can you explain hadoop streaming?
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