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Hadoop General Interview Questions
Questions Answers Views Company eMail

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

 222

What is the logistic regression?

 224

Define data cleansing?

 210

What are the port numbers of namenode?

 214

How can we create a hadoop cluster from scratch?

 220

What are the port numbers of task tracker?

 253

How can you native libraries be included in yarn jobs?

 243

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

 1 456

Define a record reader?

 224

What is the job tracker role in hadoop?

 230

Explain how do you overwrite replication factor?

 234

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

 244

Define a udf?

 223

Define a sequence file in hadoop?

 297

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

 239

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Un-Answered Questions { Hadoop General }

How analysis of Big Data is useful for organizations?

267

What are the parameters of mappers and reducers?

225

How to restart NameNode or all the daemons in Hadoop?

300

What are the features of Pseudo mode?

226

When and how to create hadoop archive?

232




How many datanodes can run on a single Hadoop cluster?

240

After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?

291

What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

237

What are the network requirements for hadoop?

252

What is the difference between TextinputFormat and KeyValueTextInputFormat class?

250

What are the port numbers of job tracker?

282

Explain the Single point of Failure in Hadoop?

233

Give examples of some companies that are using Hadoop structure?

239

Clarify what is sequence file input format?

267

If datanodes increase, then do we need to upgrade namenode?

229

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