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


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More Apache Hadoop Interview Questions

what is SPF?

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Define a datanode?

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Knox and Hadoop Development Tools?

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

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What is the difference between SQL and NoSQL?

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What are the port numbers of namenode, job tracker and task tracker?

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What is small file problem in hadoop?

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

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What is the difference between Apache Hadoop and RDBMS?

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How can you overwrite the replication factors in HDFS?

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Why do we use HDFS for applications having large data sets and not when there are lot of small files?

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What is DistributedCache and its purpose?

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