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

Hadoop General Interview Questions

Questions Answers Views Company eMail

What type of data hadoop can handle ?

309

What does the high availability of a name-node means?

301

What does block mean?

322

What do you think about the speculative execution?

319

What did mean by data-node?

306

How to use combiner in hadoop ?

306

Mention what is the data storage component used by hadoop?

307

Mention what does the text input format do?

301

Mention what daemons run on a master node and slave nodes?

357

Explain what is namenode in hadoop?

315

Explain what is a sequence file in hadoop?

341

Mention how many inputsplits is made by a hadoop framework?

438

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

285

Explain is it possible to search for files using wildcards?

306

Explain what is hadoop?

325

Post New Hadoop General Questions

Un-Answered Questions { Hadoop General }

What are the configuration files in Hadoop?

329

What are the benefits yarn brings in to hadoop?

305

what is next step after mapper or maptask?

307

What is the problem with small files in Hadoop?

327

Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?

322

What is namenode?

358

Where are Hadoop’s configuration files located?

317

Define a udf?

310

Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?

309

Why Hadoop performs replication, although it results in data redundancy?

1124

What is a record reader?

300

Why is Data Block size set to 128 MB in Hadoop?

311

Can you define udf?

316

Clarify how job tracker schedules an assignment?

312

According to IBM, what are the three characteristics of Big Data?

318

For More Un-Answered { Hadoop General } Questions Click Here