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?

671

What is skew data in hive?

758

Is kafka an etl tool?

517

What language is apache kafka written in?

588

What is zookeeper server?

What is the difference between map and reduce?

697

What is optimal size of a file for distributed cache?

693

What can skew the mean?

298

What is vectorized query execution?

331

What is map side join?

317

What does dag stand for?

311

What is data ingestion pipeline?

332

What is the difference between reducebykey and groupbykey?

312

What is data skew and how do you fix it?

342

Is databricks a database?

338

Un-Answered Questions { Big Data }

How to enable recycle bin in hadoop?

800

Explain the repartition() operation in Spark?

305

What is Derby database?

958

Explain the commit log?

Explain about the different types of trformations on dstreams?

319

Clarify how ordering in hdfs is finished?

536

Define speculative execution?

769

Explain how cassandra writes changed data into commitlog?

Explain write ahead log(journaling) in spark?

284

What is distributed copy (distcp)?

532

What are the limitations of Spark?

304

How can one write custom record reader?

534

What does job conf class do?

708

Explain the lookup() operation in Spark?

245

Define replication factor?

103

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