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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Mention what is distributed cache in hadoop?

471

Explain how can you debug hadoop code?

503

Explain how can you check whether namenode is working beside using the jps command?

477

Explain what is webdav in hadoop?

546

Mention what job does the conf class do?

465

For using hadoop list the network requirements?

510

Mention what is data cleansing?

485

What is a udf?

495

What is a record reader?

448

List out the different stream grouping in apache storm?

424

List out the some common problems faced by data analyst?

459

Why cloudera is used?

515

What are the benefits yarn brings in to hadoop?

464

Define “speculative execution” in hadoop?

472

What are the port numbers of job tracker?

552

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Un-Answered Questions { Hadoop General }

What sorts of actions does the job tracker process perform?

468

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

465

What is the role of the namenode?

492

Define a udf?

465

What are the side data distribution techniques?

525

Mention what are the three modes in which hadoop can be run?

459

Mention what is the difference between an rdbms and hadoop?

467

How would an hadoop administrator deploy various components of hadoop in production?

453

Explain Erasure Coding in Hadoop?

541

Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

652

In which location name node sores its metadata and why?

702

How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

456

What is the use of recordreader in hadoop?

457

Mention what is rack awareness?

422

what happens when namenode goes down during file read operation in hadoop?

639

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