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?

661

Explain what is storage and compute nodes?

553

Explain how jobtracker schedules a task?

517

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

484

What happens in text format?

495

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

488

Explain what is a task tracker in hadoop?

509

Explain what is speculative execution?

465

Explain what happens in text format?

618

Mention what is distributed cache in hadoop?

479

Explain how can you debug hadoop code?

509

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

485

Explain what is webdav in hadoop?

552

Mention what job does the conf class do?

474

For using hadoop list the network requirements?

520

Un-Answered Questions { Big Data }

Define streaming?

708

Why Apache Spark?

335

What is spark configuration?

354

What is a MapFile?

784

Explain write ahead log(journaling) in spark?

284

What is kafka?

608

How we can take Hadoop out of Safe Mode?

898

Can you explain apache kafka?

568

What are the two ways to create rdd in spark?

334

Which java class handles the output record encoding into files which result from Hive queries?

712

How does NameNode tackle DataNode failures?

1208

What is Schema on Read and Schema on Write?

956

What is throughput in HDFS?

what should be the ideal replication factor in hadoop?

697

What are the basic steps to writing a UDF Function in Pig?

737

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