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What is a secondary namenode?


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More Apache Hadoop Interview Questions

What should be the ideal replication factor in Hadoop Cluster?

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What exactly is hadoop?

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Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

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Mention what are the data components used by Hadoop?

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What other technologies have you used in hadoop sta ck?

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How is the option in Hadoop to skip the bad records?

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What platform and java version are required to run hadoop?

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What are the basic available commands in Hadoop sqoop ?

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Does this lead to security issues?

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What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

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On what basis Namenode will decide which datanode to write on?

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Did you ever ran into a lop sided job that resulted in out of memory error

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