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

Hadoop Interview Questions

Questions Answers Views Company eMail

What are the general Prerequisites to learn HCatalog?

How HCatalog helps to capture processing states to enable sharing?

How to invoke Command Line Interface?

Who is intended audience to learn HCatalog?

Explain HCatalog Create Table CLI along with its syntax?

State some DDL Command with brief Description?

Explain Apache Ambari?

How many layers of Hadoop components are supported by Apache Ambari and what are they?

What are the particular functionalities of Ganglia in Ambari?

What are the particular functionalities of Nagios in Ambari?

Name several advantages of Apache Ambari?

Who should learn Apache Ambari?

Explain Apache Ambari architecture?

Can Ambari manage multiple clusters?

What are the major areas where Ambari helps the system administrators to do?

Un-Answered Questions { Hadoop }

What is pig properties?

424

Define actions in spark.

2163

What is the purpose of DataNode block scanner?

780

How does groupbykey work in spark?

250

Can the balancer be run while Hadoop is in use?

797

What is bloom filter?

How many operational commands in hbase?

156

Write a Pig UDF Example ?

609

What must we know to work on Zookeeper well?

Where are Hadoop’s configuration files located?

329

Explain the various types of partitioners in cassandra?

Which are the methods to create rdd in spark?

256

What are the major differences between Hadoop 2 and Hadoop 3?

325

What does the mapred.job.tracker command do?

325

What is the reason of using hbase?

166

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