How we can change Replication factor when Data is on the fly?


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More Apache Hadoop Interview Questions

What stored in HDFS?

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What is a Secondary Namenode? Is it a substitute to the Namenode?

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What is a checkpoint?

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How many maximum jvm can run on a slave node?

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What problems have you faced when you are working on Hadoop code?

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How is security achieved in Apache Hadoop?

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

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What are channel selectors?

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What is the port number for NameNode

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What is the function of NodeManager?

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How does master slave architecture in the hadoop?

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What is a block and block scanner in HDFS?

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