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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

How to enable trash/recycle bin in hadoop?

768

What is small file problem in hadoop?

820

What are the default configuration files that are used in hadoop?

727

What exactly is hadoop?

722

Can we do online transactions(oltp) using hadoop?

706

Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?

723

What is output format in hadoop?

723

How to enable/configure the compression of map output data in hadoop?

820

What hadoop does in safe mode?

694

What is inputformat in hadoop?

783

Explain how input and output data format of the hadoop framework?

744

when hadoop enter in safe mode?

789

How to enable recycle bin or trash in hadoop?

731

Whats is distributed cache in hadoop?

706

what should be the ideal replication factor in hadoop?

691

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Un-Answered Questions { Apache Hadoop }

Name some companies that use Hadoop?

996

Define a task tracker?

687

Explain Erasure Coding in Apache Hadoop?

792

Explain how input and output data format of the hadoop framework?

744

What do slaves consist of?

706

Define fault tolerance?

692

What are the Basics of Hadoop?

963

Is it possible to provide multiple inputs to hadoop? If yes, explain.

698

Explain what if rack 2 and datanode fails?

671

Is secondary namenode a substitute to the namenode?

715

Define a datanode?

685

What is structured data?

687

How is the option in Hadoop to skip the bad records?

980

Explain the wordcount implementation via hadoop framework ?

758

Does Hadoop requires RAID?

985

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