Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

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

577

Explain what is storage and compute nodes?

474

Explain how jobtracker schedules a task?

426

Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

397

What happens in text format?

414

Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?

403

Explain what is a task tracker in hadoop?

391

Explain what is speculative execution?

386

Explain what happens in text format?

525

Mention what is distributed cache in hadoop?

401

Explain how can you debug hadoop code?

434

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

392

Explain what is webdav in hadoop?

474

Mention what job does the conf class do?

389

For using hadoop list the network requirements?

424

Un-Answered Questions { Big Data }

How many JVMs run on a slave node?

976

What counter in Hadoop MapReduce?

600

Clarify how hive de-serialize and serialize the information?

608

How can we create children / sub-znode?

Is it possible to leverage real time analysis on the big data collected by flume directly? If yes, then explain how?

How much memory is required?

Who divides the file into Block while storing inside hdfs in hadoop?

How many ways we can create rdd in spark?

280

Define the term Column Families?

Why should we use ‘distinct’ keyword in Pig scripts?

485

How can you prevent a large job from running for a long time? What do u think is more popular among the developers - Pig or Hive?

628

How is NFS different from HDFS?

Can kafka be utilized without zookeeper?

481

when to choose “internal table” and “external table” in hive?

627

How rdd can be created in spark?

250

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