Hadoop HDFS Interview Questions and Answers

Hadoop HDFS Interview Questions and Answers

Top Hadoop HDFS Interview Questions and Answers: Below, we have covered detailed answers to the Hadoop HDFS Interview Questions Which will be helpful to freshers and experienced Professionals. All the best for your interview Preparation.

 

What is HDFS?

What are the key features of HDFS?

What is a block and block scanner in HDFS?

What is the difference between NameNode, Backup Node and Checkpoint NameNode?

Is NameNode also a commodity?

What is commodity hardware?

What is a metadata?

What is a Datanode?

What is a daemon?

What is a job tracker?

What is a task tracker?

What is a heartbeat in HDFS?

What is a ‘block’ in HDFS?

How indexing is done in HDFS?

How can you overwrite the replication factors in HDFS?

Explain the difference between NAS and HDFS?

What is the process to change the files at arbitrary locations in HDFS?

Who is a ‘user’ in HDFS?

Is client the end user in HDFS?

What is ‘Key value pair’ in HDFS?

What is the difference between MapReduce engine and HDFS cluster?

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