Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

Map reduce jobs take too long. What can be done to improve the performance of the cluster?

1 757

Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?

1 654

Is apache spark going to replace hadoop?

1 385

What are the advantage of spark?

1 312

What is the disadvantage of spark sql?

1 388

When to use spark sql?

1 333

What are the great features of spark sql?

1 315

Can you explain apache spark?

1 345

What is apache presto?

1 8

Describe REVERSE function in Hive with example?

1 768

How to Alter Hive Database?

1 788

When application is on high latency (high response time)?

1 835

CONCAT function in Hive with Example?

1 875

Is it possible to create multiple table in hive for same data?

1 735

UPPER or UCASE function in Hive with example?

1 867

Un-Answered Questions { Big Data }

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

520

When to choose "External Table" in Hive?

849

What is the latest version of sqoop?

Where does the data of a Hive table gets stored?

718

What is the roadmap for apache driver version one.0?

How to set property in apache tajo?

When to use explode in Hive?

803

When we are using queries instead of scripting?

782

How you can contact your client everyday ?

1016

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

1059

State some DDL Command with brief Description?

What is meant by Transformation? Give some examples.

334

Can We Change settings within Hive Session? If Yes, How?

836

Give me the examples of Columnar database ?

641

Can free-form SQL queries be used with Sqoop import command? If yes, then how can they be used?

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