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 is a Block Scanner in HDFS?

What is the difference between nas (network attached storage) and hdfs?

What is the difference between MapReduce engine and HDFS cluster?

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What is Fault Tolerance in HDFS?

Can we have different replication factor of the existing files in hdfs?

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

Define data integrity?

How NameNode tackle Datanode failures in HDFS?

How to keep files in HDFS?

Differentiate HDFS & HBase?

File permissions in HDFS?

What is Hadoop HDFS – Hadoop Distributed File System?

How to copy file from HDFS to local?

What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?

Clarify the difference between nas and hdfs.

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