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?

106

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

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

Replication causes data redundancy then why is is pursued in HDFS?

What do you mean by metadata in HDFS?

Explain what happens if, during the PUT operation, HDFS block is assigned a replication factor 1 instead of the default value 3?

How to create directory in HDFS?

Why is Reading done in parallel and writing is not in HDFS?

What is the difference between MapReduce engine and HDFS cluster?

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

If data is present in HDFS and RF is defined, then how can we change Replication Factor?

How does data transfer happen from hdfs to hive?

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Distinguish HDFS Block and Input Unit?

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

Define HDFS and talk about their respective components?

What does heartbeat in hdfs means?

How is hdfs block size different from traditional file system block size?

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