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What is active and passive NameNode in Hadoop?
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Explain what is hadoop?
Ideally what should be replication factor in a Hadoop cluster?
What does the high availability of a name-node means? How is it accomplished?
what happens when namenode goes down during file read operation in hadoop?
What is distributed copy (distcp)?
Can we change the file cached by distributed cache
Where are hadoop’s configuration files located and list them?
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How can you set an arbitrary number of mappers to be created for a job in Hadoop?
Clarify what webdav is in hadoop?
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