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What is a Backup node in Hadoop?
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What do you know about yarn?
Which scala library is used for functional programming?
Explain how can you check whether namenode is working beside using the jps command?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
Clarify what is sequence file input format?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
How does job tracker schedule a job for the task tracker?
Give me examples of unstructured data?
What do you know about the speculative execution?
What do you understand by standalone (or local) mode?
How does hadoop achieve fault tolerance?
What is JPS? Why is it used in Hadoop?
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