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What happens if number of reducers are 0?


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More Hadoop General Interview Questions

How Big is ‘Big Data’?

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What is the difference between TextinputFormat and KeyValueTextInputFormat class?

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What does jps command do in Hadoop?

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Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

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Explain the core methods of the reducer?

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Is hadoop still in demand?

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What are input format, input split & record reader and what they do?

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What do you understand by unit and ()in scala?

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Clarify what is sqoop in hadoop?

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What are the port numbers of task tracker?

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If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?

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List Hadoop’s three configuration files?

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