What are the Features of Hadoop?
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What does secondary name-node means?
What is the block size in Hadoop?
What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
Explain Hadoop Archives?
Explain the core methods of the reducer?
Clarify how ordering in hdfs is finished?
Give me an example of document database ?
What are the major differences between Hadoop 2 and Hadoop 3?
What is purpose of RecordWriter in Hadoop?
How would you restart NameNode?
Ideally what should be the replication factor in hadoop?
Can you explain hadoop streaming?
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