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Mention what are the most common input formats defined in hadoop?
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Which scala library is used for functional programming?
What is the NameNode port number?
Where are hadoop’s configuration files located and list them?
Can you define inputsplit in hadoop?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
What are the major differences between Hadoop 2 and Hadoop 3?
What is Balancer in Hadoop?
What is the default replication factor in Hadoop and how will you change it?
How does hadoop achieve fault tolerance?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
What are the port numbers of job tracker?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
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