Apache HDFS Hadoop Distributed File System Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache HDFS Hadoop Distributed File System Interview Questions

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What is the difference between namenode, backup node and checkpoint namenode?

Is namenode also a commodity?

How do you do a file system check in hdfs?

What is the difference between an input split and hdfs block?

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What are problems with small files and hdfs?

Can you explain heartbeat in hdfs?

Can you define a block and block scanner in hdfs?

Can you explain about the indexing process in hdfs?

What is the throughput? How does hdfs give great throughput?

How does hdfs ensure information integrity of data blocks squares kept in hdfs?

What do you mean by block scanner in hdfs?

What do you mean by meta information in hdfs? List the documents related to metadata.

What does heartbeat in hdfs means?

What does hdfs mean?

Would you be able to change the block size of hdfs files?

Un-Answered Questions { Apache HDFS Hadoop Distributed File System }

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

What is Hadoop HDFS – Hadoop Distributed File System?

Clarify the difference between nas and hdfs.

What is a Block Scanner in HDFS?

Data node block size in HDFS, why 64MB?

What is throughput? How does HDFS get a good throughput?

What is hdfs block size?

What are the difference between of the “HDFS Block” and “Input Split”?

What is the difference between NAS and HDFS?

What is a task tracker?

What should be the HDFS Block size to get maximum performance from Hadoop cluster?

Write the command to copy a file from linux to hdfs?

Does HDFS allow a client to read a file which is already opened for writing in hadoop?

What does hdfs mean?

How one can change Replication factor when Data is already stored in HDFS

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