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

Big Data Interview Questions

Questions Answers Views Company eMail

Why is spark popular?

280

What causes sparks?

295

Do streamers make money from sparks?

282

Why scala is used in spark?

329

Does spark use zookeeper?

279

Which is better hadoop or spark?

292

Is spark a language?

280

Is spark good for machine learning?

310

What is spark rdd?

290

Does google use spark?

282

How is spark different from hadoop?

298

Is spark written in scala?

295

What is dag spark?

329

What is spark application?

363

What is the difference between scala and spark?

313

Un-Answered Questions { Big Data }

Whether the output of mapper or output of partitioner written on local disk?

673

What is kafka?

556

What is Rack Awareness? What is its need in Hadoop?

538

What is the relationship between hdfs, hbase, pig, hive and azkaban?

520

What do you understand by Thrift?

What does block mean?

446

Are spark dataframes immutable?

325

Explain some Disadvantages of Avro?

What is coalesce in spark sql?

311

How do I change hive execution engine to spark?

302

Explain how cassandra delete data?

100

Why is Transformation lazy in Spark?

349

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

473

Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?

689

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

482

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