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?

632

What is skew data in hive?

700

Is kafka an etl tool?

462

What language is apache kafka written in?

534

What is zookeeper server?

What is the difference between map and reduce?

631

What is optimal size of a file for distributed cache?

636

What can skew the mean?

282

What is vectorized query execution?

317

What is map side join?

306

What does dag stand for?

295

What is data ingestion pipeline?

321

What is the difference between reducebykey and groupbykey?

295

What is data skew and how do you fix it?

332

Is databricks a database?

316

Un-Answered Questions { Big Data }

What is a rack awareness algorithm?

What are the major features/characteristics of rdd (resilient distributed datasets)?

307

What is KeyValueTextInputFormat in Hadoop?

532

Define tasktracker.

658

What do you understand by the partitions in spark?

320

On what basis data will be stored on a rack?

1143

What is Clustring in Hive?

741

Is spark difficult to learn?

304

If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?

451

Compare Hadoop and RDBMS?

413

What are the steps involved in MapReduce framework?

983

Name a few import control commands. How can Sqoop handle large objects?

Do we need hadoop for spark?

297

What are the languages supported by apache spark and which is the most popular one?

1705

Explain sum(), max(), min() operation in Apache Spark?

301

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