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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?

 723

What is HDFS block size and what did you chose in your project?

 612

What is HDFS High Availability?

 704

What are different types of filesystem?

 807

how can we change Replication Factor?

 643

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

 528

What are the core components of Apache Hadoop?

 410

What is the difference between Apache Hadoop and RDBMS?

 436

How is security achieved in Apache Hadoop?

 430

What is Apache Hadoop?

 516

What is a “Distributed Cache” in Apache Hadoop?

 415

What is the problem with small files in Apache Hadoop?

 443

What is Rack Awareness in Apache Hadoop?

 435

Explain Erasure Coding in Apache Hadoop?

 408

What is Disk Balancer in Apache Hadoop?

 433

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Un-Answered Questions { Apache Hadoop }

How to Administering Hadoop?

646

Explain a simple Map/Reduce problem.

439

What is oozie in hadoop?

404

What is the function of ApplicationMaster?

658

How can you connect an application

712




What is the communication channel between client and namenode/datanode?

1420

How can I install Cloudera VM in my system?

656

What is version-id mismatch error in hadoop?

743

How can I restart namenode?

424

What do shuffling do?

375

Explain the features of pseudo mode?

412

Explain how is hadoop different from other data processing tools?

393

Explain the use of .mecia class?

489

Explain the core components of hadoop?

381

Explain why do we need hadoop?

383

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