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 are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

280

What are the configuration files in Hadoop?

249

Compare Apache Hadoop and Apache Spark?

229

What are the different modes in which we can configure/install Hadoop?

245

Explain how Hadoop cluster hardware planning and provisioning is done?

277

How to create a user in Hadoop?

228

What are the major differences between Hadoop 2 and Hadoop 3?

238

What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

295

How to specify more than one path for storage in Hadoop?

257

What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?

268

What is JPS? Why is it used in Hadoop?

241

What is the key difference between NameNode and DataNode in Hadoop?

247

What is Small File Problem in Hadoop? How can it be resolved?

244

Ideally what should be replication factor in a Hadoop cluster?

258

What is NameNode? How NameNode tackle Datanode failures in Hadoop?

282

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Un-Answered Questions { Hadoop General }

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

280

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

411

What jobtracker is in hadoop? What are the activities followed by hadoop?

247

What is the difference between namenode and datanode in hadoop?

262

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

248

Explain what is speculative execution?

219

What is Fault Tolerance?

333

Explain how jobtracker schedules a task?

258

What does name-node mean in hadoop?

256

What are the limitations of Hadoop?

249

When should be hadoop archive create?

250

What is a Backup node in Hadoop?

259

What are the port numbers of task tracker?

259

Can you give a detailed overview about the Big Data being generated by Facebook?

254

Can you explain commodity hardware?

243

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