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?

290

What is the advantage of a Parquet file?

317

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

382

What do you understand by SchemaRDD?

307

How can you achieve high availability in Apache Spark?

421

Define a worker node?

443

Name a few companies that use Apache Spark in production?

321

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

313

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

263

What does the Spark Engine do?

308

How Spark uses Akka?

299

How Spark handles monitoring and logging in Standalone mode?

328

What is Hadoop serialization?

Capital One,

648

Explain a simple Map/Reduce problem.

Capital One,

683

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,

717

Un-Answered Questions { Big Data }

Explain what is a column family in cassandra?

118

What are "coordinator nodes" in cassandra?

What are the different ways of representing data in Spark?

255

What is the History of Cassandra Database ?

Explain the benefits of block transfer?

771

What do you understand by the super column in cassandra?

Why big data?

515

Mention the common features in Pig and Hive?

880

Can you tell us more about ssh?

679

How many ways we can create rdd?

266

Is there any difference between FileSink and FileRollSink?

How can a user create a Keyspace in Cassandra?

Is spark a language?

269

What is kafka Producer?

506

What is difference between split and block in hadoop?

1357

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