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

Big Data Interview Questions

Questions Answers Views Company eMail

Explain about the scalar datatypes in Apache Pig?

896

Explain the uses of PIG?

984

What are the complex datatypes in pig?

982

What does illustrate do in Apache Pig?

927

What is UDF?

913

What are the different types of UDF's in Java supported by Apache Pig?

1054

What is the usage of foreach operation in Pig scripts?

874

How will you merge the contents of two or more relations and divide a single relation into two or more relations?

938

What is the MapReduce plan in pig architecture?

1054

What are the advantages of pig language?

886

What are the different execution mode available in Pig?

1049

Define Spark Streaming.

413

Hadoop uses replication to achieve fault tolerance. How is this achieved in Apache Spark?

408

What is lineage graph?

460

What are benefits of Spark over MapReduce?

453

Un-Answered Questions { Big Data }

What is a “Distributed Cache” in Apache Hadoop?

777

What does the high availability of a name-node means? How is it accomplished?

413

How businesses could be benefitted with Big Data?

543

What is difference between map and flatmap?

298

Explain the CLI In Zookeeper?

What is Chain Mapper?

558

How to set mappers and reducers for MapReduce jobs?

635

What is a IdentityMapper and IdentityReducer in MapReduce ?

945

Explain small file problem in hadoop

421

When does impala hold on to or return memory?

What is the utilization of hcatalog?

686

Suppose that your data is stored in collections, for instance, some binary data, message data or metadata is all keyed on the same value. Will you use HBase for this?

158

What is the use of cassandra and why to use cassandra?

153

Can you explain the core methods of a reducer?

509

What is the relation between MapReduce and Hive?

643

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