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 hdfa differs with nfs?

741

How a task is scheduled by a jobtracker?

674

How many maximum jvm can run on a slave node?

686

What are the two main parts of the hadoop framework?

669

What is the use of combiners in the hadoop framework?

616

What is the jobtracker?

633

What is the jobtracker and what it performs in a hadoop cluster?

637

How many instances of tasktracker run on a hadoop cluster?

679

Explain the use of tasktracker in the hadoop cluster?

633

How does a namenode handle the failure of the data nodes?

691

How is spark sql different from hql and sql?

271

Is there a module to implement sql in spark? How does it work?

300

What is pagerank in graphx?

284

How is streaming implemented in spark? Explain with examples.

357

Can you use spark to access and analyze data stored in cassandra databases?

305

Un-Answered Questions { Big Data }

Why HCatalog?

What is the use of cloudera?

448

Can we load data into a view?

701

What are the major differences between Hadoop 2 and Hadoop 3?

480

Define column families?

171

What is secondary namenode?

What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?

433

Is kafka big data?

477

Can you explain spark core?

264

Is spark better than mapreduce?

278

Is avro supported?

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

549

What are the different types of tables available in Hive?

697

What happens to job tracker when namenode is down?

668

Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?

640

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