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?

772

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

677

Explain the difference between a MapReduce InputSplit and HDFS block?

657

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

602

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

604

What is the difference between Job and Task in MapReduce?

614

Compare Pig vs Hive vs Hadoop MapReduce?

675

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

620

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

635

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

627

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

629

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

600

Explain the process of spilling in Hadoop MapReduce?

632

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

600

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

645

Un-Answered Questions { Big Data }

What are the use cases of Apache Pig?

798

What is a Record Reader in hadoop?

957

List the diagnostic operators in pig.

588

What is an offset?

503

How can you control the number of mappers used by the sqoop command?

Does apache flume support third-party plugins?

Explain the wordcount implementation via hadoop framework ?

724

Specify what the information segments utilized by hadoop are?

438

What is inputformat in hadoop?

744

Give examples of the SerDe classes which hive uses to Serialize and Deserialize data?

700

What are the main benefits of using cassandra?

What is the primary purpose of flume in the hadoop architecture?

875

What is Hadoop Map Reduce ?

805

What are the similarities and differences between Apache Flume and Apache Kafka?

107

What are all stats classes in the java api package available?

558

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