Explain how do you overwrite replication factor?
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How would you restart NameNode?
What is Disk Balancer in Hadoop?
Name the most common Input Formats defined in Hadoop? Which one is default?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
How do you overwrite replication factor?
How can one check whether NameNode is working or not?
What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?
Is there another way to check whether Namenode is working?
Explain Hadoop streaming?
What is streaming access?
Mention what is distributed cache in hadoop?
What is difference between reducer and combiner?
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