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

Big Data Interview Questions

Questions Answers Views Company eMail

Where is the output of Mapper written in Hadoop?

779

Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?

686

Explain the difference between a MapReduce InputSplit and HDFS block?

668

How to create custom key and custom value in MapReduce Job?

613

How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?

618

What is the difference between Job and Task in MapReduce?

626

Compare Pig vs Hive vs Hadoop MapReduce?

688

What is the fundamental difference between a MapReduce InputSplit and HDFS block?

631

How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?

650

How to get the single file as the output from MapReduce Job?

637

Why is output file name in Hadoop MapReduce part-r-00000?

642

Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?

610

Explain the process of spilling in Hadoop MapReduce?

648

What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

608

What are the the issues associated with the map and reduce slots based mechanism in mapReduce?

654

Un-Answered Questions { Big Data }

How blocks are distributed among all data nodes for a particular chunk of data?

1099

Differentiate between piglatin and hiveql?

579

What is an Agent?

Is secondary namenode a substitute to the namenode?

692

How can I import large objects (BLOB and CLOB objects) in Apache Sqoop?

List out some common problems faced by data analyst?

461

What are the benefits of Spark lazy evaluation?

322

What is pseudo-distributed mode?

610

Say what the views are in hive?

679

What are the different operational commands in HBase at record level and table level?

363

What is nlineoutputformat?

687

What are 2 v’s less known dimension of big data?

525

How many maximum jvm can run on a slave node?

694

When is it not recommended to use MapReduce paradigm for large scale data processing?

666

What is Sqoop?

For More Un-Answered { Big Data } Questions Click Here