What is safe mode in Hadoop?


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More Apache Hadoop Interview Questions

Explain Erasure Coding in Apache Hadoop?

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What is HDFS ? How it is different from traditional file systems?

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Explain the core components of hadoop?

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What do the master class and the output class do?

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Is hadoop a database?

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What is inputsplit in hadoop? Explain.

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What happens to job tracker when namenode is down?

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How does NameNode tackle DataNode failures?

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What is the best hardware configuration to run Hadoop?

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Define a datanode?

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What do you know about keyvaluetextinputformat?

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How many instances of a jobtracker run on hadoop cluster?

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