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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What is safe mode in Hadoop?

794

What is MapFile?

810

What do you understand from Node redundancy and is it exist in hadoop cluster?

1073

What happens to a NameNode that has no data?

1391

What is a heartbeat in HDFS?

765

What are sink processors?

753

Does hadoop always require digital data to process?

955

what is meaning Replication factor?

782

What is the purpose of RawComparator interface?

922

Where is the Mapper Output stored?

1195

What is the function of ApplicationMaster?

798

What problems can be addressed by using Zookeeper?

803

What is Hadoop streaming?

860

Is client the end user in HDFS?

839

Can the balancer be run while Hadoop is in use?

789

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Un-Answered Questions { Apache Hadoop }

What are the site-specific configuration files in Hadoop?

866

What is a Task instance in Hadoop? Where does it run?1

724

What is a Secondary Namenode? Is it a substitute to the Namenode?

866

What are the benefits of block transfer?

793

What is inputsplit in hadoop? Explain.

585

What is compute and Storage nodes?

854

Is hadoop required for data science?

521

what are the steps involved in commissioning adding

752

Name the various types of lists supported by bootstrap.

509

What are the four characteristics of Big Data?

551

What is the difference between a Hadoop and Relational Database and Nosql?

867

How does NameNode tackle DataNode failures?

991

what is the typical block size of an HDFS block?

757

Define a namenode?

505

Explain the features of stand alone (local) mode?

482

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