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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Which port does SSH work on?

405

Is there another way to check whether Namenode is working?

403

What is the NameNode port number?

400

Give me an example of document database ?

476

What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

452

What are the four modules that make up the Apache Hadoop framework?

554

How does job tracker schedule a job for the task tracker?

454

What is 'jps'?

422

Explain about Hadoop file system and processing framework?

424

How Hadoop is cost-effective?

415

What does the mapred.job.tracker command do?

425

Is it possible to rename the output file, and if so, how?

463

What are the Hadoop features extended to its eco-system components ?

439

What is job tracker in Hadoop?

500

What sorts of actions does the job tracker process perform?

421

Post New Hadoop General Questions

Un-Answered Questions { Hadoop General }

What are the important features of hadoop?

442

Ideally what should be replication factor in a Hadoop cluster?

518

List some use cases where classification machine learning algorithms can be used.

463

What is the key difference between NameNode and DataNode in Hadoop?

489

Which port does SSH work on?

405

Is it possible to have hadoop job output in multiple directories? If yes, how?

452

What do you understand by standalone (or local) mode?

428

What are the port numbers of task tracker?

464

What is partitioning?

463

Ideally what should be the block size in hadoop?

461

Define data cleansing?

402

What are the features of Pseudo mode?

503

Explain the difference between an inputsplit and a block?

427

What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?

454

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

408

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