What is a 'block' in HDFS?


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More Apache Hadoop Interview Questions

What if rack 2 and datanode fails?

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What is safe mode in Hadoop?

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How to enable trash/recycle bin in hadoop?

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What are different types of filesystem?

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What are the site-specific configuration files in Hadoop?

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What is the main purpose of HDFS fsck command?

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How Mapper is instantiated in a running job?

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What is the Use of SSH in Hadoop ?

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What does the command mapred.job.tracker do?

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What is the difference between traditional RDBMS and Hadoop?

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Why do we use HDFS for applications having large data sets and not when there are lot of small files?

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Explain what if rack 2 and datanode fails?

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