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?

614

Explain what is storage and compute nodes?

512

Explain how jobtracker schedules a task?

465

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

439

What happens in text format?

436

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

445

Explain what is a task tracker in hadoop?

448

Explain what is speculative execution?

423

Explain what happens in text format?

573

Mention what is distributed cache in hadoop?

440

Explain how can you debug hadoop code?

464

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

429

Explain what is webdav in hadoop?

508

Mention what job does the conf class do?

420

For using hadoop list the network requirements?

471

Un-Answered Questions { Big Data }

What does ‘jps’ command do?

694

What is the function of HMaster?

255

Explain how indexing in hdfs is done?

What are accumulators in spark?

311

What is keyvaluetextinputformat?

732

What is spark tool?

263

Name Applications and Use Cases of HCatalog?

What is a spark shuffle?

331

When should we use SORT BY instead of ORDER BY?

690

What is Schema on Read and Schema on Write?

916

How much does flume cost?

What is Client API?

281

How data or file is written into Hadoop HDFS?

Explain nodetool utility.

How much data is enough to get valid outcome?

622

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