How would you restart NameNode?
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When should be hadoop archive create?
What a task tracker is in hadoop?
What is a rack?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
Can we use windows for hadoop?
What are the port numbers of task tracker?
What happen if one of the datanodes has much slower cpu?
What daemons run on master nodes?
Define a udf?
Where are hadoop’s configuration files located and list them?
After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?
What are configuration files in Hadoop?
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