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

Does hdfs enable a customer to peruse a record, which is already opened for writing?

What is the throughput?

How does hdfs give great throughput?

Will various customers write into an hdfs record simultaneously?

Clarify the difference between nas and hdfs.

What do you mean by meta information in hdfs?

Can we change the document present in hdfs?

Explain what is heartbeat in hdfs?

Explain what is a difference between an input split and hdfs block?

Explain how indexing in hdfs is done?

Mention what is the best way to copy files between hdfs clusters?

Mention what is the difference between hdfs and nas?

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

What is the difference between input split and hdfs block?

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

What does heartbeat in hdfs means?

How does hdfs provides good throughput?

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

What is a rack awareness algorithm?

What is a block?

When NameNode enter in Safe Mode?

Why is HDFS only suitable for large data sets and not the correct tool to use for many small files?

What do you mean by meta information in hdfs?

Write command to copy a file from HDFS to linux(local).

What is Fault Tolerance in HDFS?

Why rack awareness algorithm is used in hadoop?

How data or file is written into Hadoop HDFS?

Does the HDFS go wrong? If so, how?

How to create Users in hadoop HDFS?

Why is block size set to 128 MB in Hadoop HDFS?

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