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?

629

What is skew data in hive?

699

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?

627

What is optimal size of a file for distributed cache?

636

What can skew the mean?

282

What is vectorized query execution?

315

What is map side join?

303

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 NameNode? How NameNode tackle Datanode failures in Hadoop?

468

Explain coalesce operation in Apache Spark?

323

What is Cassandra Data Model?

Describe impala shell (impala-shell command)?

How can an application connect to Hive run as a server?

1168

How is the distance between two nodes defined in Hadoop?

1455

How would you restart NameNode?

422

Explain what is storage and compute nodes?

512

How to fetch particular columns in pig?

588

What is the difference between Hiveserver1 and Hiveserver2?

802

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

407

What is Directed Acyclic Graph(DAG)?

309

What are the features of kafka?

542

Is it necessary to know java to learn hadoop?

663

Define catalog tables in HBase?

215

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