What is the difference between an inputsplit and a block?
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Where are Hadoop’s configuration files located?
what happens when namenode goes down during file read operation in hadoop?
How often do you need to reformat the namenode?
Explain map-only job?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
What is Balancer in Hadoop?
How can you native libraries be included in yarn jobs?
What is Fault Tolerance?
Explain in which directory hadoop is installed?
What is the NameNode port number?
Why do we need hadoop for big data analytics?
For using hadoop list the network requirements?
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