When and how to create hadoop archive?
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Why do we need Hadoop?
Where are hadoop’s configuration files located and list them?
Can you explain commodity hardware?
How is the splitting of file invoked in Hadoop framework?
Ideally what should be the replication factor in hadoop?
What does block mean?
How to restart NameNode or all the daemons in Hadoop?
What is JPS? Why is it used in Hadoop?
Can I set the number of reducers to zero?
How to use combiner in hadoop ?
Mention what is data cleansing?
What are the modes in which Hadoop run?
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