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?

1 765

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

1 662

Is apache spark going to replace hadoop?

1 400

What are the advantage of spark?

1 330

What is the disadvantage of spark sql?

1 401

When to use spark sql?

1 342

What are the great features of spark sql?

1 331

Can you explain apache spark?

1 358

What is apache presto?

1 9

Describe REVERSE function in Hive with example?

1 776

How to Alter Hive Database?

1 794

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

1 842

CONCAT function in Hive with Example?

1 881

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

1 742

UPPER or UCASE function in Hive with example?

1 875

Un-Answered Questions { Big Data }

State some DDL Command with brief Description?

What is the latest version of spark?

307

Explain how RDDs work with Scala in Spark

370

What is the function of UNION and SPLIT operators? Give examples?

588

How can you import only a subset of rows from a table?

What is the stable version of Hive ?

2677

What is meant by Transformation? Give some examples.

343

How to set property in apache tajo?

What is the roadmap for apache mahout version 1.0?

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

Give me the examples of Columnar database ?

646

How can I delete the above index named index_bonuspay?

781

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

1059

Which modes can Hadoop be run in? List a few features for each mode?

521

What are the different types of tables available in Hive?

749

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