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 the relationship between Jobs and Tasks in Hadoop?

619

Who are ‘Data Scientists’?

419

Tell me some major benefits of Hadoop?

408

What is structured and unstructured data?

450

According to IBM, what are the three characteristics of Big Data?

436

Which port does SSH work on?

410

Is there another way to check whether Namenode is working?

405

What is the NameNode port number?

400

Give me an example of document database ?

476

What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

452

What are the four modules that make up the Apache Hadoop framework?

554

How does job tracker schedule a job for the task tracker?

454

What is 'jps'?

428

Explain about Hadoop file system and processing framework?

430

How Hadoop is cost-effective?

415

Un-Answered Questions { Big Data }

Which command is used to list all the tables in a database or list all the columns in a table?

Give me an example of document database ?

476

Mention what is the maximum size of the message does kafka server can receive?

537

How does bloom filter help in searching rows?

219

Explain the steps to be followed to deploy a big data solution?

502

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

602

What do you mean by metadata in HDFS? Where is it stored in Hadoop?

Explain the RDD properties?

311

When is the reducers are started in a MapReduce job?

866

What are combiners? When should I use a combiner in my MapReduce Job?

906

What are Paired RDD?

315

Different running modes for running Pig?

891

What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

722

Can a spark cause a fire?

328

How many datanodes can run on a single Hadoop cluster?

452

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