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How will format the HDFS ?
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More Apache Hadoop Interview Questions
How indexing is done in HDFS?
Who invented hadoop?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
Explain the core components of hadoop?
Does hadoop always require digital data to process?
Does the hdfs client decide the input split or namenode?
Explain the shuffle?
What are the modules that constitute the Apache Hadoop 2.0 framework?
How does a namenode handle the failure of the data nodes?
What are the two main components of ResourceManager?
Can the balancer be run while Hadoop is in use?
Mention what are the data components used by Hadoop?
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