What is the job tracker role in hadoop?
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What are the major differences between Hadoop 2 and Hadoop 3?
How to restart NameNode or all the daemons in Hadoop?
How is the splitting of file invoked in Hadoop ?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
What is Federation?
Explain Data Locality in Hadoop?
Are there any special requirements for namenode?
Are job tracker and task trackers present in separate machines?
Clarify what is sequence file input format?
What does block mean?
What are the important features of hadoop?
What happen if one of the datanodes has much slower cpu?
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