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What is heartbeat in hadoop?


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More Hadoop General Interview Questions

How to create the directory when name node is in safe mode?

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Can we change the file cached by distributed cache

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What is the use of context object?

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What are the main components in Hadoop Eco-System and what are their functions ?

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Are there any special requirements for namenode?

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What are the most common OutputFormat in Hadoop?

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What is the role of the namenode?

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How can you set an arbitrary number of mappers to be created for a job in Hadoop?

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Can I set the number of reducers to zero?

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Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?

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What is the NameNode port number?

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Why slaves limited to 4000 in hadoop version 1?

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