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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Explain the key benefits of using storm for real time processing?

306

What is the logistic regression?

309

Define data cleansing?

282

What are the port numbers of namenode?

299

How can we create a hadoop cluster from scratch?

296

What are the port numbers of task tracker?

338

How can you native libraries be included in yarn jobs?

319

Name the files which are used by the startup and shutdown commands?

1 619

Define a record reader?

300

What is the job tracker role in hadoop?

301

Explain how do you overwrite replication factor?

324

Explain how can we check whether namenode is working or not?

391

Define a udf?

310

Define a sequence file in hadoop?

405

Name the operating system(s) which are supported for production hadoop deployment?

311

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Un-Answered Questions { Hadoop General }

What is check pointing in hadoop?

317

What happen on the namenode when a client tries to read a data file?

320

Ideally what should be replication factor in a Hadoop cluster?

338

What is the NameNode port number?

299

What is the use of context object?

320

How many InputSplits will be made by hadoop framework?

336

What are the tools used in big data?

295

What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

347

Is hadoop still in demand?

308

What are some of the characteristics of Hadoop framework?

321

What are the four basic parameters of a mapper?

383

How can one write custom record reader?

356

Comparison between Secondary NameNode and Checkpoint Node in Hadoop?

353

What is a udf?

327

Why cloudera is used?

347

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