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What do you mean by the NameNode High Availability in hadoop?


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More Hadoop General Interview Questions

Explain Erasure Coding in Hadoop?

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Mention what is distributed cache in hadoop?

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

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List out the some common problems faced by data analyst?

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

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What is the difference between a hadoop database and relational database?

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What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

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If DataNode increases, then do we need to upgrade NameNode in Hadoop?

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Explain how Hadoop cluster hardware planning and provisioning is done?

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When we send a data to a node, do we allow settling in time, before sending another data to that node?

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