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

Big Data Interview Questions

Questions Answers Views Company eMail

How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

422

What are the different commands used to startup and shutdown Hadoop daemons?

527

What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

528

How is the splitting of file invoked in Hadoop framework?

513

Is it possible to provide multiple input to Hadoop? If yes then how?

502

Is it possible to have hadoop job output in multiple directories? If yes, how?

452

What is the default replication factor and how will you change it?

533

Explain Hadoop Archives?

535

Explain the Single point of Failure in Hadoop?

477

Explain Erasure Coding in Hadoop?

503

What is Disk Balancer in Hadoop?

513

How would you check whether your NameNode is working or not?

420

Is Namenode machine same as DataNode machine as in terms of hardware?

461

If DataNode increases, then do we need to upgrade NameNode?

549

What happens if the number of reducers is 0 in Hadoop?

481

Un-Answered Questions { Big Data }

Explain deletion in hbase? Mention what are the three types of tombstone markers in hbase?

141

What do you mean by column family in Cassandra?

Is apache flume real time processing framework?

Why do we need hive?

723

How do you write comments in pig scripts?

543

Is it possible to create multiple table in hive for same data?

691

What are different tombstone markers in hbase?

154

What is a bloom filter?

162

Which components are used for stream flow of data?

576

Is nosql follow relational db model?

467

What is the main objective of creating Cassandra?

106

What does rack awareness algorithm means?

488

What is the difference between CREATE TABLE AND CREATE EXTERNAL TABLE?

700

Tell me about the execution modes of Apache Pig?

538

Can a table be renamed in Hive?

735

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