Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What is the spark driver?

324

What is big data spark?

309

How does lazy evaluation work in spark?

287

What is the use of dataframe in spark?

292

When should you use spark cache?

287

How do I start a spark server?

298

What is executor and driver in spark?

284

Is apache spark an etl tool?

276

What is a spark context?

274

Where is rdd stored?

309

What is apache spark engine?

298

Is hadoop mandatory for spark?

281

What is map in spark?

332

Is spark written in java?

315

How do I start a spark cluster?

300

Un-Answered Questions { Big Data }

Name some features of Apache Cassandra?

Is it possible to do an incremental import using Sqoop?

When is it suggested to use a combiner in a MapReduce job?

636

What is KeyValueTextInputFormat in Hadoop MapReduce?

804

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

473

What does spark do during speculative execution?

331

Which command do we use to show the version?

160

What's rdd?

284

What are the fundamental configurations parameters specified in map reduce?

635

Can spark work without hadoop?

331

If DataNode increases, then do we need to upgrade NameNode in Hadoop?

454

Is spark streaming real time?

285

Can I do trforms or add new functionality?

Name different types of NoSQL database?

What does /etc /init.d do?

700

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