What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
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What are the common types of NOSQL data bases ?
Explain what is speculative execution?
What are the major differences between Hadoop 2 and Hadoop 3?
Ideally what should be the block size in hadoop?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
Can you explain commodity hardware?
What happens if the number of reducers is 0 in Hadoop?
Can we deploy job tracker other than name node?
What is job tracker role in hadoop?
What does hadoop-env.sh do?
Can you define a checkpoint?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
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