What is the purpose of DataNode block scanner?


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More Apache Hadoop Interview Questions

Are Namenode and job tracker on the same host?

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What is small file problem in hadoop?

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Explain the wordcount implementation via hadoop framework ?

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How many JVMs run on a slave node?

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Explain the basic difference between traditional rdbms and hadoop?

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What is the meaning of speculative execution in Hadoop? Why is it important?

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What are the core components of Apache Hadoop?

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What are the Basics of Hadoop?

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what are the steps involved in decommissioning removing

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On what basis name node distribute blocks across the data nodes?

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Define a daemon?

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What is Your Cluster size ?

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