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

Big Data Interview Questions

Questions Answers Views Company eMail

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

514

How analysis of Big Data is useful for organizations?

536

What does the file hadoop-metrics.properties do?

542

Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?

509

How will you write a custom partitioner for a Hadoop job?

506

Give me the examples of Columnar database ?

636

What are 'slaves' and 'masters' in Hadoop?

481

What is Fault Tolerance?

573

What is the basic difference between traditional RDBMS and Hadoop?

487

What are the common types of NOSQL data bases ?

487

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

482

How does speculative execution work in Hadoop?

493

What is Federation?

469

What is the difference between TextInputFormat and KeyValueInputFormat class?

557

What is High Availability feature in Hadoop2?

490

Un-Answered Questions { Big Data }

Explain leftOuterJoin() and rightOuterJoin() operation in Apache Spark?

403

How many ways we can create rdd in spark?

309

How Big Data can help increase the revenue of the businesses?

640

What is the difference between Internal Table and External Table in Hive?

767

How to Rename a table in Hive

800

Does spark load all data in memory?

360

What are some of the apache pig use cases you can think of?

541

Assume that an HBase table Student is disabled. So, how to access the student table once it is disabled, by using Scan command?

173

How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

826

Elucidate the concept of cap theorem?

Explian the Limitations of HBase?

199

What is key-value store db?

How to create RDD?

513

What is spark etl?

314

What is the Virtual Node in Cassandra ?

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