What are the main components of hadoop?
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What are the four modules that make up the Apache Hadoop framework?
List out some common problems faced by data analyst?
Give me an example of document database ?
What is the procedure for namenode recovery?
What is a udf?
What happens if you don?t override the mapper methods and keep them as it is?
What is namenode?
What are the configuration files in Hadoop?
Explain Hadoop streaming?
What do you understand by standalone (or local) mode?
How to handle bad records during parsing?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
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