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What is Row Key?


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More Apache Hadoop Interview Questions

Does the hdfs client decide the input split or namenode?

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How to change Replication Factor For below cases ?

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Explain the master class and the output class do?

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What are the steps to submit a Hadoop job?

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Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?

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How blocks are distributed among all data nodes for a particular chunk of data?

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Who is a 'user' in HDFS?

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Do we need to give a password, even if the key is added in ssh?

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Explain Erasure Coding in Apache Hadoop?

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Main Components of Hadoop?

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What will you do when NameNode is down?

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What is the problem with HDFS and streaming data like logs

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