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What hadoop does in safe mode?


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More Apache Hadoop Interview Questions

What is a Record Reader in hadoop?

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What are the main components of a Hadoop Application?

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Define tasktracker.

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How to change replication factor of files already stored in HDFS?

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What is the jobtracker and what it performs in a hadoop cluster?

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What is Safemode in Apache Hadoop?

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What is crontab? Explain with suitable example?

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Whats is distributed cache in hadoop?

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What is a heartbeat in HDFS?

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What is Schema on Read and Schema on Write?

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What is the purpose of button groups?

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How does a namenode handle the failure of the data nodes?

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