For using hadoop list the network requirements?
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What are the tools used in big data?
What are the parameters of mappers and reducers?
How is security achieved in Hadoop?
Explain Hadoop Archives?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
Ideally what should be replication factor in a Hadoop cluster?
While starting hadoop services, datanode service is not running?
Tell me some major benefits of Hadoop?
Define a udf?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
What is the default replication factor in Hadoop and how will you change it?
What does jps command do in Hadoop?
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