What is KeyValueTextInputFormat in Hadoop?
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Define data cleansing?
What are the four basic parameters of a mapper?
Why does one remove or add nodes in a Hadoop cluster frequently?
Why would nosql be better than using a sql database? And how much better is it?
what happens when namenode goes down during file read operation in hadoop?
What are the four modules that make up the Apache Hadoop framework?
What are the Features of Hadoop?
Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
How to create a user in Hadoop?
What is winutils hadoop?
What is a rack?
What a task tracker is in hadoop?
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