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 secondary namenode, checkpoint namenode & backupnode?

1 524

Name the most common input formats defined in hadoop?

1 501

Which one is default?

1 553

Is it possible to have hadoop job output in multiple directories?

1 500

What is tasktracker in hadoop?

1 491

What is a combiner in hadoop?

1 571

Have you ever used counters in hadoop?

1 486

What are some typical functions of job tracker in hadoop?

1 492

Can you define inputsplit in hadoop?

1 538

What daemons run on master nodes?

1 536

Can you explain rack awareness?

1 496

Can you explain record reader?

1 488

What are the side effects of not running a secondary name node?

1 505

What are the main components of hadoop?

1 516

What do you understand by unit and ()in scala?

1 551

Un-Answered Questions { Big Data }

List the advantage of Parquet file in Apache Spark?

492

What is the roadmap for apache mahout version 1.0?

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

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

591

When to use explode in Hive?

808

What is a Hive variable? What for we use it?

858

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

1059

When we are using queries instead of scripting?

782

What is the latest version of ambari that is available in the present market?

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

840

What is the latest version of spark?

310

What is the stable version of Hive ?

2677

Give me the examples of Columnar database ?

647

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

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

522

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