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?

402

Explain what is storage and compute nodes?

262

Explain how jobtracker schedules a task?

246

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

254

What happens in text format?

234

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

258

Explain what is a task tracker in hadoop?

219

Explain what is speculative execution?

214

Explain what happens in text format?

298

Mention what is distributed cache in hadoop?

229

Explain how can you debug hadoop code?

241

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

244

Explain what is webdav in hadoop?

271

Mention what job does the conf class do?

234

For using hadoop list the network requirements?

215

Un-Answered Questions { Big Data }

Explain the concept of Leader and Follower?

367

List the various HDFS daemons in HDFS cluster?

What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?

717

Explain about the execution plans of a pig script?
or
differentiate between the logical and physical plan of an apache pig script?

242

Give any two features of flume?

What happens if the number of reducers is 0 in Hadoop?

250

What is the primary purpose of the pig in the hadoop architecture?

2495

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

238

What are possible types of Channel Selectors?

How many Reducers run for a MapReduce job in Hadoop?

345

What are the relational operators available related to combining and splitting in pig language?

434

What is dag spark?

191

Name three features of using Apache Spark

191

Clarify the difference between nas and hdfs.

How much memory is required?

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