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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

How can we change the split size if our commodity hardware has less storage space?

 377

How is hadoop different from other data processing tools?

 399

What happens in a textinputformat?

 382

Can you explain how do ‘map’ and ‘reduce’ work?

 377

Can we call vms as pseudos?

 391

What do the master class and the output class do?

 386

What does job conf class do?

 379

What do you know about keyvaluetextinputformat?

 363

Define a namenode?

 369

Explain the hadoop-core configuration?

 382

Explain the benefits of block transfer?

 506

Define a task tracker?

 370

Define a metadata?

 386

Define a daemon?

 368

Explain the core components of hadoop?

 377

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Un-Answered Questions { Apache Hadoop }

What is hbase in hadoop?

378

What infrastructure do we need to process 100 TB data using Hadoop?

736

How the Client communicates with HDFS?

712

How can one increase replication factor to a desired value in Hadoop?

774

What are channel selectors?

659




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

386

Do we need to give a password, even if the key is added in ssh?

415

On what basis name node distribute blocks across the data nodes?

755

What are the modules that constitute the Apache Hadoop 2.0 framework?

684

What is Disk Balancer in Apache Hadoop?

430

how can we change Replication Factor?

640

What is the difference between SQL and NoSQL?

656

What is your favourite tool in the hadoop ecosystem?

639

What is Schema on Read and Schema on Write?

636

Explain why do we need hadoop?

381

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