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?

475

How analysis of Big Data is useful for organizations?

467

What does the file hadoop-metrics.properties do?

492

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?

461

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

462

Give me the examples of Columnar database ?

591

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

433

What is Fault Tolerance?

539

What is the basic difference between traditional RDBMS and Hadoop?

449

What are the common types of NOSQL data bases ?

453

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

439

How does speculative execution work in Hadoop?

441

What is Federation?

423

What is the difference between TextInputFormat and KeyValueInputFormat class?

502

What is High Availability feature in Hadoop2?

447

Un-Answered Questions { Big Data }

Explain cap theorem?

103

List commonly used machine learning algorithm?

292

Should the region server be located on all DataNodes?

442

What is the role of the namenode?

455

While reading data from hbase, from which three places data will be reconciled before returning the value?

198

How Cassandra stores data?

Define HRegionServer in HBase

157

What is action, how it process data in apache spark

336

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

List the files associated with metadata in hdfs?

What are the various data sources available in SparkSQL?

335

How can you use adminclient api?

588

What is the command to start and stop the Spark in an interactive shell?

315

What is the difference between an RDBMS and Hadoop?

647

Define Apache Pig?

633

For More Un-Answered { Big Data } Questions Click Here