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What is a namenode? How many instances of namenode run on a hadoop cluster?


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More Apache Hadoop Interview Questions

What does /etc /init.d do?

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How to come out of the insert mode?

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What is the problem with HDFS and streaming data like logs

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What are the default configuration files that are used in hadoop?

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Why is hadoop faster?

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Define a datanode?

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What is a task instance in hadoop? Where does it run?

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What is inputsplit in hadoop? Explain.

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What is Derby database?

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Where is the Mapper Output stored?

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Which command is used for the retrieval of the status of daemons running the hadoop cluster?

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What is DistributedCache and its purpose?

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