What are the important modes of hadoop?
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Why do we need hadoop for big data analytics?
What happens in text format?
How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?
Mention what job does the conf class do?
Explain the common input formats in hadoop?
What are the restriction to the key and value class ?
is there a standard procedure to deploy hadoop?
Define “speculative execution” in hadoop?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
Why is checkpointing important in hadoop?
What is a combiner in hadoop?
How many maps are there in a particular job?
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