Explain the difference between NameNode
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What happens to a namenode, when job tracker is down?
how can we change Replication Factor?
What is the InputFormat ?
What is the sequencefileinputformat in hadoop?
Which is the best hadoop certification?
What do you know by storage and compute node?
What are the steps to submit a Hadoop job?
Why do we need a password-less ssh in fully distributed environment?
Explain the master class and the output class do?
Explain the core components of hadoop?
Is hadoop required for data science?
What if rack 2 and datanode fails?
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