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 BlinkDB used?

301

What is the advantage of a Parquet file?

329

What are the key features of Apache Spark that you like?

388

What do you understand by SchemaRDD?

315

How can you achieve high availability in Apache Spark?

433

Define a worker node?

455

Name a few companies that use Apache Spark in production?

325

What is the difference between persist() and cache()?

323

Which spark library allows reliable file sharing at memory speed across different cluster frameworks?

271

What does the Spark Engine do?

323

How Spark uses Akka?

320

How Spark handles monitoring and logging in Standalone mode?

336

What is Hadoop serialization?

Capital One,

697

Explain a simple Map/Reduce problem.

Capital One,

718

Data Engineer Given a list of followers in the format:123, 345234, 678345, 123â€¦Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?

Twitter,

748

Un-Answered Questions { Big Data }

What purpose would an engineer use spark?

407

What is the use of apache flume?

What are the components of presto architecture?

How can we scale apache mahout in cloud?

What is the stable version of Hive ?

2629

What is cloudera and why it is used?

797

What do you understand by cql?

when do reducers play their role in a mapreduce task?

616

What is the purpose of Sqoop List Tables?

Explain the main difference between kafka and flume?

611

How many Mappers run for a MapReduce job?

609

What is identity mapper and chain mapper?

669

What is the difference between kafka and mq?

521

How do we create rdds in spark?

558

What is the maximum size of string data type supported by hive? Mention the hive support binary formats.

665

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