Is hadoop still in demand?
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What are the side effects of not running a secondary name node?
What are the four basic parameters of a mapper?
What happens if number of reducers are 0?
Which directory does hadoop install to?
What is KeyValueTextInputFormat in Hadoop?
In which location name node sores its metadata and why?
Does hadoop follows the unix pattern?
What is a udf?
Compare Hadoop and RDBMS?
Can you explain speculative execution?
What does the file hadoop-metrics.properties do?
What are the benefits yarn brings in to hadoop?
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