What is JobTracker?
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Define a record reader?
What are the core methods of a Reducer?
While starting hadoop services, datanode service is not running?
When should be hadoop archive create?
If datanodes increase, then do we need to upgrade namenode?
How would you check whether your NameNode is working or not?
Can we deploye job tracker other than name node?
What is Federation?
Explain what is a sequence file in hadoop?
What are the primary phases of the reducer?
Why cloudera is used?
What is structured and unstructured data?
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