What is a heartbeat in HDFS?


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More Apache Hadoop Interview Questions

What will you do when NameNode is down?

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Explain how do ‘map’ and ‘reduce’ works?

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Explain the shuffle?

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What is Hadoop streaming?

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How many Daemon processes run on a Hadoop system?

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Can you give us some more details about ssh communication between masters and the slaves?

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Is hadoop the future?

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What are the stable versions of Hadoop?

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What happens in a textinputformat?

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How do you categorize a big data?

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What do you mean by taskinstance?

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Can we call vms as pseudos?

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