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Why can we not create directory /user/dataflair/inpdata001 when name node is in safe mode?


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More Hadoop General Interview Questions

What are the most common InputFormats 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 input format, input split & record reader and what they do?

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What does rack awareness algorithm means and why is it utilized as a part of hadoop?

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How to create hadoop archive?

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Whats the default port that jobtrackers listens ?

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List Hadoop’s three configuration files?

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What is the role of the secondary namenode?

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What are the most common OutputFormat in Hadoop?

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Is it possible to rename the output file, and if so, how?

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After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?

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What is Federation?

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