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Big Data Interview Questions
Questions Answers Views Company eMail

What is difference between secondary namenode, checkpoint namenode & backupnode?

468

Name the most common input formats defined in hadoop?

443

Which one is default?

484

Is it possible to have hadoop job output in multiple directories?

444

What is tasktracker in hadoop?

428

What is a combiner in hadoop?

510

Have you ever used counters in hadoop?

421

What are some typical functions of job tracker in hadoop?

418

Can you define inputsplit in hadoop?

468

What daemons run on master nodes?

485

Can you explain rack awareness?

433

Can you explain record reader?

431

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

448

What are the main components of hadoop?

432

What do you understand by unit and ()in scala?

494


Un-Answered Questions { Big Data }

What can I do with my m&s sparks points?

322


What is mllib?

279


How many Mappers run for a MapReduce job in Hadoop?

611


How to Containerizing ZooKeeper With Docker?

5


How does gossip protocol help in failure detection?

76


What is TaskTracker?

482


Explain HCatInputFormat?

5


What is simple strategy?

131


Mention what is distributed cache in hadoop?

440


Explain about tajo worker configuration?

5


What are input format, input split & record reader and what they do?

623


What is apache spark architecture?

317


What is the Hadoop MapReduce API contract for a key and value Class?

1292


Explain bloom?

615


List out the commands that are used to start, check the progress and stop the ambari server?

61