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’?

422

Tell me some major benefits of Hadoop?

408

What is structured and unstructured data?

454

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?

406

What is the NameNode port number?

400

Give me an example of document database ?

481

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

453

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

555

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

457

What is 'jps'?

430

Explain about Hadoop file system and processing framework?

432

How Hadoop is cost-effective?

416

Un-Answered Questions { Big Data }

What is compaction in hbase?

171

What is the command to change the replication factor ?

505

Does spark store data?

289

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

764

What is off heap memory in spark?

305

Mention what are views in Hive?

695

What is dag spark?

327

What happens when two users try to access to the same file in HDFS?

Explain how message is consumed by consumer in Kafka?

512

How to create and manage a view in HCatalog?

What are the main hdfs-site.xml properties?

What are the languages supported by apache spark and which is the most popular one?

1705

What are secondary indexes?

what does the shell commands “Capture” and “Consistency” determines?

111

How can we create children / sub-znode?

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