Explain what is a sequence file in hadoop?
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Where are hadoop’s configuration files located and list them?
What are the main components in Hadoop Eco-System and what are their functions ?
How do you overwrite replication factor?
Can you explain commodity hardware?
What are the benefits yarn brings in to hadoop?
Is there another way to check whether Namenode is working?
What is the use of recordreader in hadoop?
Specify what the information segments utilized by hadoop are?
Why do the nodes are removed and added frequently in a hadoop cluster?
What is heartbeat in hadoop?
What is a commodity hardware? Does commodity hardware include RAM?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
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