Is secondary namenode a substitute to the namenode?


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More Apache Hadoop Interview Questions

What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?

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Who is a 'user' in HDFS?

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Explain how input and output data format of the hadoop framework?

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Explain how is hadoop different from other data processing tools?

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What are different hdfs dfs shell commands to perform copy operation?

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What are the two main parts of the hadoop framework?

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What is the default replication factor?

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How hdfa differs with nfs?

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What is the difference between rdbms and hadoop?

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Explain InputFormat?

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How is security achieved in Apache Hadoop?

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What is the full form of fsck?

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