What is the default replication factor?
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Mention what are the data components used by Hadoop?
What is DistributedCache and its purpose?
What do masters consist of?
What are different hdfs dfs shell commands to perform copy operation?
What is partioner in hadoop? Where does it run,mapper or reducer?
How hdfa differs with nfs?
Explain use cases where SequenceFile class can be a good fit?
How to keep HDFS cluster balanced?
How does an hadoop application look like or their basic components?
What happens to a NameNode that has no data?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What do shuffling do?
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