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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Give a brief overview of Hadoop history?

418

How Big is ‘Big Data’?

428

How can you set an arbitrary number of mappers to be created for a job in Hadoop?

461

How many job tracker processes can run on a single Hadoop cluster?

474

What are some of the characteristics of Hadoop framework?

438

Where are Hadoop’s configuration files located?

508

Can you give a detailed overview about the Big Data being generated by Facebook?

432

In hadoop_pid_dir, what does pid stands for?

524

What are the network requirements for hadoop?

474

What does hadoop-env.sh do?

448

Which are the three modes in which hadoop can be run?

478

Where is hadoop-env.sh file present?

484

Can we use windows for hadoop?

477

What are the hadoop configuration files at present?

476

Can we create a hadoop cluster from scratch?

436

Post New Hadoop General Questions

Un-Answered Questions { Hadoop General }

If DataNode increases, then do we need to upgrade NameNode in Hadoop?

455

How often do you need to reformat the namenode?

511

Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

441

Have you ever used counters in hadoop?

421

What is heartbeat in hadoop?

426

What is Identity reducer?

525

What are the different modes in which we can configure/install Hadoop?

542

Can you explain bloommapfile.

453

What are the hadoop configuration files at present?

476

Clarify what is sqoop in hadoop?

419

How to create a user in Hadoop?

489

What are the side effects of not running a secondary name node?

449

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

410

What is Disk Balancer in Hadoop?

513

What is a namenode?

399

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