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?

440

Explain how can you debug hadoop code?

468

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

431

Explain what is webdav in hadoop?

508

Mention what job does the conf class do?

424

For using hadoop list the network requirements?

471

Mention what is data cleansing?

437

What is a udf?

448

What is a record reader?

407

List out the different stream grouping in apache storm?

383

List out the some common problems faced by data analyst?

410

Why cloudera is used?

476

What are the benefits yarn brings in to hadoop?

424

Define “speculative execution” in hadoop?

424

What are the port numbers of job tracker?

525

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Un-Answered Questions { Hadoop General }

What is the difference between TextInputFormat and KeyValueInputFormat class?

501

What does the mapred.job.tracker command do?

426

Mention what is the difference between an rdbms and hadoop?

424

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

410

How to create hadoop archive?

419

What are the important modes of hadoop?

536

What daemons run on master nodes?

485

What is a Backup node in Hadoop?

560

Explain how do you overwrite replication factor?

436

Mention what job does the conf class do?

424

What are the major differences between Hadoop 2 and Hadoop 3?

480

Explain the Single point of Failure in Hadoop?

477

In which directory hadoop is installed?

406

Can you explain commodity hardware?

407

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

419

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