What is Balancer in Hadoop?
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What is data cleansing?
What are the parameters of mappers and reducers?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
Explain what happens in text format?
Which are the three modes in which hadoop can be run?
Why slaves limited to 4000 in hadoop version 1?
What are the port numbers of namenode?
Give me examples of unstructured data?
What happen if one of the datanodes has much slower cpu?
Explain Hadoop streaming?
When should be hadoop archive create?
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