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

Big Data Interview Questions

Questions Answers Views Company eMail

How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

467

What are the different commands used to startup and shutdown Hadoop daemons?

595

What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

593

How is the splitting of file invoked in Hadoop framework?

583

Is it possible to provide multiple input to Hadoop? If yes then how?

559

Is it possible to have hadoop job output in multiple directories? If yes, how?

499

What is the default replication factor and how will you change it?

594

Explain Hadoop Archives?

595

Explain the Single point of Failure in Hadoop?

526

Explain Erasure Coding in Hadoop?

562

What is Disk Balancer in Hadoop?

578

How would you check whether your NameNode is working or not?

460

Is Namenode machine same as DataNode machine as in terms of hardware?

521

If DataNode increases, then do we need to upgrade NameNode?

607

What happens if the number of reducers is 0 in Hadoop?

523

Un-Answered Questions { Big Data }

Explain the difference between mahout & mllib?

Is ambari python clients can be used to make the good use of ambari api’s?

Is it necessary to learn hadoop for spark?

316

Which files are used by the startup and shutdown commands?

784

Can you explain broadcast variables?

318

What is DataFrames?

386

What is Apache Pig?

873

What are the different types of data model?

Define speculative execution?

771

What is the difference between scala and spark?

330

Who is intended audience to learn avro?

What is KeyValueTextInputFormat in Hadoop?

593

Differentiate HDFS & HBase?

How can you connect an application, if you run hive as a server?

758

What is the purpose of exploding in hive?

721

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