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?

617

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?

306

Un-Answered Questions { Big Data }

Can you explain heartbeat in hdfs?

How to control access to data in impala?

Why slaves limited to 4000 in hadoop version 1?

487

Tell the purpose of Bloom Filter in Cassandra?

213

Why does my insert statement fail?

What are some of the apache pig use cases you can think of?

496

State some DDL Command with brief Description?

Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?

662

How can you set an arbitrary number of mappers to be created for a job in Hadoop?

461

Explain first() operation in Spark?

348

List the steps in which Cassandra writes changed data into commitlog?

223

What is bag data type in Pig?

678

Give the use of the bootstrap panel.

676

What is MapReduce? What are the syntax you use to run a MapReduce program?

666

What is identity mapper and chain mapper?

669

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