What is Balancer in Hadoop?
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Name the most common Input Formats defined in Hadoop? Which one is default?
How will you write a custom partitioner for a Hadoop job?
Can hadoop replace relational database?
What are the Features of Hadoop?
How to debug Hadoop code?
What does block mean?
Why aggregation cannot be done in Mapper?
What is Distributed Cache in Hadoop?
What are the functionalities of jobtracer?
What is fsck?
What does rack awareness mean?
What are the hadoop configuration files at present?
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