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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

Define streaming?

656

What is keyvaluetextinputformat?

732

Define a commodity hardware? Does commodity hardware include ram?

745

Explain the hadoop configuration files at present?

667

Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

727

Explain why the name ‘hadoop’?

708

Define a combiner?

647

Explain the master class and the output class do?

652

Explain the features of stand alone (local) mode?

613

Name the examples of some companies that are using hadoop structure?

691

What is structured data?

650

Define streaming access?

672

Define fault tolerance?

654

What do sorting do?

683

What is nlineoutputformat?

675

Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

What if rack 2 and datanode fails?

1060

What are channel selectors?

1029

Mention what is the number of default partitioner in Hadoop?

694

What is the difference between SQL and NoSQL?

1077

Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?

640

What is Partioner in hadoop? Where does it run

975

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

691

What is the sequencefileinputformat in hadoop?

713

Why is Apache Spark faster than Apache Hadoop?

842

Define a metadata?

653

Why password is needed in ssh localhost?

801

Explain the benefits of block transfer?

823

Should we use RAID in Hadoop or not?

1058

What do shuffling do?

671

What is Rack Awareness in Apache Hadoop?

811

For More Un-Answered { Apache Hadoop } Questions Click Here