What are the most common OutputFormat in Hadoop?
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What is High Availability feature in Hadoop2?
How do you overwrite replication factor?
What are the main components in Hadoop Eco-System and what are their functions ?
Why is Data Block size set to 128 MB in Hadoop?
What are the differences between hadoop 1 and hadoop 2?
What is rack awareness in hadoop?
How to do ‘map’ and ‘reduce’ works?
When should be hadoop archive create?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
What is the best practice to deploy the secondary name node?
What is active and passive NameNode in Hadoop?
What is structured and unstructured data?
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