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 difference between hive and hdfs?

591

What is skew data in hive?

654

Is kafka an etl tool?

426

What language is apache kafka written in?

499

What is zookeeper server?

What is the difference between map and reduce?

572

What is optimal size of a file for distributed cache?

587

What can skew the mean?

258

What is vectorized query execution?

291

What is map side join?

285

What does dag stand for?

276

What is data ingestion pipeline?

301

What is the difference between reducebykey and groupbykey?

272

What is data skew and how do you fix it?

311

Is databricks a database?

295

Un-Answered Questions { Big Data }

What is the default level of parallelism in apache spark?

375

Is avro supported?

What is the use of recordreader in hadoop?

388

How can hive avoid mapreduce?

618

How to restart NameNode or all the daemons in Hadoop?

514

Is there a module to implement sql in spark? How does it work?

279

What is Apache Spark Streaming?

309

What are the functions of "Spark Core"?

269

Is hive suitable to be used for oltp systems? Why?

743

Is apache spark in demand?

250

What are collection data types in Hive?

664

If there is certain data that we want to use again and again in different transformations, what should improve the performance?

274

What is the work of Export in Hadoop sqoop?

Explain about the different types of transformations on DStreams?

365

What is hbase in hadoop?

602

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