Why is checkpointing important in hadoop?
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What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
Explain the common input formats in hadoop?
Why do the nodes are removed and added frequently in a hadoop cluster?
What are the different commands used to startup and shutdown Hadoop daemons?
What is the best practice to deploy the secondary name node?
Explain the Single point of Failure in Hadoop?
What does rack awareness algorithm means and why is it utilized as a part of hadoop?
What are the actions followed by hadoop?
What mode(s) can hadoop code be run in?
Why do we need Hadoop Archives? How is it created?
How do you overwrite replication factor?
What is KeyValueTextInputFormat in Hadoop?
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