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what happens when namenode goes down during file read operation in hadoop?


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More Hadoop General Interview Questions

Why do we need Hadoop Archives? How is it created?

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Explain what is a sequence file in hadoop?

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Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

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What are the network requirements for hadoop?

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How will you write a custom partitioner for a Hadoop job?

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How job tracker schedules an assignment?

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How to handle bad records during parsing?

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Define a sequence file in hadoop?

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What is namenode?

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What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?

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What is difference between secondary namenode, checkpoint namenode & backupnode?

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Is nosql follow relational db model?

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