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

Big Data Interview Questions

Questions Answers Views Company eMail

How is dag created in spark?

266

What does spark do during speculative execution?

301

What is heap memory in spark?

238

What is external shuffle service in spark?

276

What is spark client?

262

Which are the various data sources available in spark sql?

276

Can you run spark without hadoop?

302

What is tungsten engine in spark?

297

What is stage and task in spark?

202

What is spark execution engine?

333

Is spark sql a database?

242

Is spark distributed computing?

280

What is row rdd in spark?

279

How is rdd fault?

261

How does reducebykey work in spark?

241

Un-Answered Questions { Big Data }

Name job control options specified by mapreduce.

662

Give the name of some components of Cassandra?

Can we submit the mapreduce job from slave node?

1048

What is big data in dbms?

530

HDFS is used for applications with large data sets, not why Many small files?

What are the benefits of lazy evaluation?

278

What is the function of NodeManager?

862

What is the relation between MapReduce and Hive?

583

Which query language is used in Cassandra database?

What is different table structure available in the hive?

623

What kind of hardware is best for hadoop?

380

What is the difference between apache mahout and apache spark’s mllib?

Explain the action count() in Spark RDD?

264

Mention what are the main components of cassandra data model?

What is the data storage component used by Hadoop?

580

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