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How NameNode tackle Datanode failures in Hadoop?


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More Hadoop General Interview Questions

What is purpose of RecordWriter in Hadoop?

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In which directory hadoop is installed?

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Do we need to place 2nd and 3rd data in rack 2 only?

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Explain what is storage and compute nodes?

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What does the high availability of a name-node means?

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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 the use of context object?

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Whats the default port that jobtrackers listens ?

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What is rack awareness in hadoop?

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How many datanodes can run on a single Hadoop cluster?

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In hadoop_pid_dir, what does pid stands for?

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is there a standard procedure to deploy hadoop?

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