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 the role of alter keyspace?

What is hadoop, hbase, hive and cassandra? Specify similarities and differences among them.

125

Explain cassandra.

Where cassandra stores its data?

What do you mean by cassandra-cqlsh?

What is a mapreduce algorithm?

636

What is mapreduce algorithm?

587

What is hdfs block size?

How hdfs is different from traditional file systems?

How is hdfs block size different from traditional file system block size?

When the reducers are are started in a mapreduce job?

593

Where the mapper's intermediate data will be stored?

635

Which are the methods in the mapper interface?

633

What is a namenode? How many instances of namenode run on a hadoop cluster?

643

What do you mean by taskinstance?

745

Un-Answered Questions { Big Data }

What are the disadvantages of using Spark?

309

Differentiate between the physical plan and logical plan in Pig script?

770

Why does one remove or add nodes in a Hadoop cluster frequently?

693

What are the various InputFormats in Hadoop?

649

What is spark good for?

346

What are the core api’s of kafka?

501

How to create table in hbase?

169

Can you explain sequence file in hadoop?

404

Explain Drop View Statement along with syntax?

What is the purpose of DataNode block scanner?

962

Define role of volume in big data?

565

What does dag stand for?

295

What is the purpose of Sqoop List Tables?

Does spark run mapreduce?

299

What is the difference between kafka and flume?

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