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What does secondary name-node means?
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What is structured and unstructured data?
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 many inputsplits is made by a hadoop framework?
What is the logistic regression?
Which one is default?
Explain how can we check whether namenode is working or not?
Clarify what is sequence file input format?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
What is a combiner in hadoop?
What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?
What does rack awareness algorithm means and why is it utilized as a part of hadoop?
Why do the nodes are removed and added frequently in a hadoop cluster?
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