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 are the different types of Znodes?

981

How many instances of JobTracker can run on a Hadoop Cluser?

1022

What's the best way to copy files between HDFS clusters?

1358

Can Apache Kafka be used without Zookeeper?

1035

What is Your Cluster size ?

1437

What is the default block size in hdfs?

1040

What are active and passive "NameNodes"?

1465

It can be possible that a Job has 0 reducers?

964

What are combiners and its purpose?

931

On what basis Namenode will decide which datanode to write on?

1264

Can Hadoop be compared to NOSQL database like Cassandra?

908

What is a Secondary Namenode? Is it a substitute to the Namenode?

1032

what are relational operations in pig latin?

866

What is the difference between SQL and NoSQL?

1077

What are the additional benefits YARN brings in to Hadoop?

963

Un-Answered Questions { Big Data }

How to set up local repository manually?

Explain about the basic parameters of mapper and reducer function

1046

Explain HCatalog Architecture in Brief?

what is the typical block size of an HDFS block?

916

What is pig statistics?

527

What does rack awareness algorithm means?

488

What is the meaning of the term "non-DFS used" in Hadoop web-console?

1308

How many Mappers run for a MapReduce job?

608

Does spark use tez?

298

What is executor memory in a spark application?

304

Does impala use caching?

What are the barriers?

What do you mean by column family?

What is simple strategy?

131

What is the role of the offset.

512

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