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 a 'block' in HDFS?

976

What is Derby database?

902

How many Daemon processes run on a Hadoop system?

1101

What are the limitations of importing RDBMS tables into Hcatalog directly?

944

How the Client communicates with HDFS?

1063

What is NoSQL?

922

What is Row Key?

981

What is a Task instance in Hadoop? Where does it run?1

853

What does the overwrite keyword denote in Hive load statement?

1 2509

What is IdentityMapper?

1004

Why do we use Hadoop?

925

what is the typical block size of an HDFS block?

916

What is Hadoop Custom partitioner ?

1001

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1328

What stored in HDFS?

926

Un-Answered Questions { Big Data }

How does executor work in spark?

313

How to set which framework would be used to run mapreduce program?

684

how can you debug Hadoop code?

838

Whether Pig Latin language is case-sensitive or not?

659

What is difference between rdd and dataframe?

350

What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

1075

What is fsck?

642

List few differences between apache kafka and rabbitmq?

569

What are the functions of "Spark Core"?

289

What is a tuple in pig?

547

Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?

677

What is combiner aggregator?

592

Why do we use Hadoop?

925

Explain the core methods of a reducer?

511

What is Apache HBase?

267

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